SECURITIES AND EXCHANGE COMMISSION

                              Washington, D. C. 20549


                                    FORM 8-K

                                 CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported)           March 26, 2001

                            ACETO CORPORATION
            (Exact name of registrant as specified in charter)

           New York                   0-4217                11-1720520
 (State or other jurisdiction       (Commission          (IRS Employer
   of incorporation)                File Number)        Identification No.)

       One Hollow Lane, Lake Success, New York              11042
        (Address of principal executive offices)         (Zip Code)

Registrant's telephone number, including area code     (516) 627-6000

       (Former name or former address, if changed since last report.)

Item 2.  Acquisition or Disposition of Assets.

On March 26, 2001, Aceto Corporation ("Aceto" or the "registrant") acquired the
distribution business of the Schweizerhall Pharma division of Schweizerhall
Holding AG, a Switzerland corporation.  Additionally, Schweizerhall, Inc., a
New Jersey corporation, and a wholly owned subsidiary of Schweizerhall Holding
AG sold to Aceto the assets relating to its Pharmaceutical Ingredients
business, and Chemische Fabrik Schweizerhall, a Switzerland corporation, and a
wholly owned subsidiary of Schweizerhall Holding AG sold to Aceto all of the
issued and outstanding shares of the following of its subsidiaries:
Schweizerhall GmbH; Schweizerhall Pharma International GmbH; Schweizerhall Fine
Chem International GmbH; Schweizerhall France S.A.; Schweizerhall Holding
Benelux B.V.; Schweizerhall Pharma Ltd; and Schweizerhall Pte. Ltd.

Schweizerhall Pharma's distribution business is an international pharmaceutical
distribution business with offices located in: Hamburg, Germany; Wormereveer,
The Netherlands (a suburb of Amsterdam); Paris, France; Piscataway, New Jersey;
Singapore; Mumbai, India; and Hong Kong.  It's principal activities are the
supply of Active Pharmaceutical Ingredients (API's) and Advanced Intermediates.

The consideration given for the foregoing was: 600,000 shares of Aceto common
stock; payment of approximately $11,743,820.00 from Aceto's funds; and
promissory notes in the amount of approximately $4,625,944.00.

There are no material relationships between the parties from whom the assets
were acquired and the registrant or any of its affiliates, any director or
officer of the registrant, or any associate of any such director or officer.
The purchase price was determined by negotiations between the parties.

Aceto intends to continue the business in which the assets that were acquired
were used and to integrate such business into Aceto's business.  To that end
Aceto entered into an employment agreement with Dr. Axel Mueller who headed
Schweizerall Pharma.  The Purchase and Sale Agreement provides that Aceto shall
extend to a nominee of Schweizerhall Holding AG an invitation to join Aceto's
Board of Directors and that for the first year following the Closing, the
nominee shall be Dr. Hans Peter Schaer.  On March 27, 2001, Dr. Schaer was
elected a director of Aceto.

Item 7.  Financial Statements, Pro Forma financial Information and Exhibits.

(a) Financial Statements of Businesses Acquired.

To be filed by amendment to this Form 8-K not later than June 10, 2001.

(b)  Pro Forma Financial Information.

Any required pro forma financial information will also be filed by amendment to
this Form 8-K not later than June 10, 2001.

(c)  Exhibits.

Exhibit 2.1.  Purchase and Sale Agreement by and between ACETO CORPORATION, a
New York corporation having its principal place of business at One Hollow Lane,
Lake Success, New York, U.S.A. ("Aceto"); ACETO HOLDING B.V., I.O., a
corporation which may be organized under the laws of The Netherlands as a
wholly owned subsidiary of Aceto (or such other corporation as may be formed or
owned by Aceto to effect the Stock Purchaser contemplated hereby)
("Purchaser"); SCHWEIZERHALL HOLDING AG, a corporation organized under the laws
of Switzerland having its principal place of business at Elsasserstrasse 229,
CH-4013, Basel, Switzerland ("Schweizerhall Holding") CHEMISCHE FABRIK
SCHWEIZERHALL, a corporation organized under the laws of Switzerland having its
principal place of business at Elsasserstrasse 229, CH-4013, Basel, Switzerland
and a wholly owned subsidiary of Schweizerhall Holding ("Chemische Fabrik");
and SCHWEIZERHALL, INC., a New Jersey corporation and having its principal
place of business at 25 Corporate Place South, Piscataway, New Jersey 08854 and
a wholly owned subsidiary of Schweizerhall Holding ("Schweizerhall, Inc.") made
and entered into as of the 28th day, of January, 2001.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.

ACETO CORPORATION
________________________________
                                                           (Registrant)

By:   /s/ Leonard S. Schwartz
              (Signature)
      Leonard S. Schwartz, Chairman
        of the Board of Directors

Dated:  April 4, 2001

[A conformed copy of the Purchase and Sale Agreement will be annexed
as Exhibit 2.1]

                          PURCHASE AND SALE AGREEMENT

      THIS PURCHASE AND SALE AGREEMENT (the "Agreement") is made and entered
into in Lake Success, New York as of the 28th day of January, 2001 by and
between ACETO CORPORATION, a New York corporation having its principal place of
business at One Hollow Lane, Lake Success, New York, U.S.A. ("Aceto"); ACETO
HOLDING B.V., I.O., a corporation which may be organized under the laws of The
Netherlands as a wholly owned subsidiary of Aceto (or such other corporation as
may be formed or owned by Aceto to effect the Stock Purchaser contemplated
hereby) ("Purchaser"); SCHWEIZERHALL HOLDING AG, a  corporation organized under
the laws of Switzerland having its principal place of business at
Elsasserstrasse 229, CH-4013, Basel, Switzerland ("Schweizerhall Holding");
CHEMISCHE FABRIK SCHWEIZERHALL, a corporation organized under the laws of
Switzerland having its principal place of business at Elsasserstrasse 229, CH-
4013, Basel, Switzerland and a wholly owned subsidiary of Schweizerhall Holding
("Chemische Fabrik"); and SCHWEIZERHALL, INC., a New Jersey corporation and
having its principal place of business at 25 Corporate Place South, Piscataway,
New Jersey  08854 and a wholly owned subsidiary of Schweizerhall Holding
("Schweizerhall, Inc.")

                             W I T N E S S E T H:

      WHEREAS, Chemische Fabrik owns and desires to sell, assign and convey to
Aceto and/or Purchaser all of the issued and outstanding shares (the "Shares")
of all of its subsidiary corporations set forth on SCHEDULE 1.0 annexed hereto
(herein, the "Subsidiary Companies"), and Aceto desires to purchase and acquire
the Shares from Chemische Fabrik either directly or through its to-be-formed
Purchaser on and subject to the terms and conditions of this Agreement; and

      WHEREAS, Schweizerhall, Inc. is engaged in the business of purchasing,
trading and sale of active pharmaceutical ingredients, advanced intermediates
and related chemical products (the "Pharmaceutical Ingredients Business"); and

      WHEREAS, Schweizerhall, Inc. owns and desires to sell and assign to Aceto
the Assets (as defined herein) relating to the Pharmaceutical Ingredients
Business and Aceto desires to acquire the Assets from Schweizerhall, Inc. and,
thereafter, to use, market, license, sublicense, develop, maintain, collect and
otherwise deal with the Assets without restriction.

      NOW THEREFORE, in consideration of the mutual covenants contained herein,
and the respective representations and warranties hereinafter set forth, the
parties hereto agree as follows:

                                  ARTICLE I.

                                 DEFINITIONS.

      As used herein, the following terms shall have the following meanings:

      *A. "$" shall mean U.S. dollars.

      *B."Aceto Shares" shall mean shares of common stock, $.01 par value, of
Aceto.

      *C. "Aceto Guaranty" shall mean the guaranty of Aceto described in
Section 2.6.

      *D."Asset Purchase Note" shall mean the promissory note described in
Section 11.3.

      *E. "Assets" shall mean all of Schweizerhall, Inc.'s assets existing on
the Closing Date of every kind and description relating to the Pharmaceutical
Ingredients Business except that the "Assets" do not include the Excluded
Assets (as hereinafter defined).  The Assets shall otherwise include the
following:

            *1.all accounts receivable, notes receivable and other rights to
receive payments from customers of Schweizerhall, Inc. with respect to the
Pharmaceutical Ingredients Business on the Closing Date, all to be described in
SCHEDULE 1.5(a) hereto to be provided on or before Closing Date (the
"Receivables");

            *2.all equipment, vehicles, furniture and fixtures, and all other
fixed assets owned or leased by Schweizerhall, Inc. relating to the
Pharmaceutical Ingredients Business, except not the Excluded Assets, as
described in SCHEDULE 1.5(b) hereto to
be provided on or before Closing Date (the "Fixed Assets"); and

            *3. all Inventory with respect to the Pharmaceutical Ingredients
Business wherever located on the Closing Date, including raw materials, goods
consigned to vendors or subcontractors, work in process, finished goods and
goods in transit as described in SCHEDULE 1.5(c)to be provided on or before the
Closing Date;

            *4.  all deposits and rights to refunds from customers and
suppliers with respect to the Pharmaceutical Ingredients Business relating to
the Contracts described in Section 1.5(i) below, all as described in SCHEDULE
1.5(d);

            *5. all supplies owned by Schweizerhall, Inc. relating to the
Pharmaceutical Ingredients Business;

            *6. copies of all business and financial records, books, ledgers,
files, plans, documents, correspondence, lists, plots, architectural plans,
drawings, notebooks, specifications, creative materials, advertising and
promotional materials, marketing materials, studies, reports, equipment repair,
maintenance or service records of Schweizerhall, Inc., whether written or
electronically stored or otherwise recorded in each case, relating to the
Pharmaceutical  Ingredients Business;

            *7. all of Schweizerhall, Inc.'s goodwill, dealer and customer
lists and all other sales and marketing information, and all know-how,
technology, drawings, engineering specifications, bills of materials, software
and other intangible assets of Schweizerhall, Inc. in each case, relating to
the Pharmaceutical Ingredients Business;

            *8. all drug master files, dossiers, patents, patent rights,
copyrights, trademarks, trademark rights, trade names, trade name rights and
patent, copyright or trademark applications, which Schweizerhall, Inc. owns
relating to the Pharmaceutical Ingredients Business, and all ideas, know-how,
trade secrets, inventions, technology, designs and any other proprietary rights
which Schweizerhall, Inc. owns;

            *9. all rights and benefits under all leases or other agreements
related to the Fixed Assets, if any, and all customer or supplier contracts,
agreements or commitments relating to the Pharmaceutical Ingredients Business
to which Schweizerhall, Inc. is a party (collectively, the "Contracts"), except
not Contracts relating to the Excluded Assets or the leased offices at 25
Corporate Place South, Piscataway, N.J., all set forth on SCHEDULE 1.5(i)
annexed hereto to be provided on or before the Closing Date;

            *10. all permits, licenses, orders, ratings and approvals of all
federal, state, local or foreign governmental or regulatory authorities or
industrial bodies that are held by Schweizerhall, Inc. and related to the
Pharmaceutical Ingredients Business to the extent the same are transferable;

            *11. all other items of property, real or personal, tangible or
intangible, including, without limitation all restrictive and negative covenant
agreements with employees and others including, without limitation,
nondisclosure agreements, computer programs, tapes, discs and timesharing
files, owned, used by or accruing to the benefit of Schweizerhall, Inc. in each
case, used in the Pharmaceutical Ingredients Business.

      *F. "Balance Sheet" shall mean the balance sheet of Schweizerhall, Inc.
or the Subsidiary Companies, as the case may be, at December 31, 2000 included
as part of the Financial Statements (as hereinafter defined).

      *G. "Closing Date" shall mean March 26, 2001, or such other date as the
parties hereto may agree.

      *H. "Closing Date Inventory" shall mean, with respect to the Subsidiary
Companies, the inventory held by the Subsidiary Companies on the Closing Date,
and, with respect to Schweizerhall, Inc., the inventory held by Schweizerhall,
Inc. relating to the Pharmaceutical Ingredients Business on the Closing Date.

      *I."Current Assets" shall mean accounts receivables and prepaid expenses
on the Closing Date.

      *J."Escrow Agent" shall be mutually determined by the parties.

      *K. "Escrow Agreement" shall mean an Escrow Agreement, dated the Closing
Date, by and among Purchaser, Aceto, Schweizerhall Holding, Chemische Fabrik,
Schweizerhall, Inc. and the Escrow Agent, having the release provisions
attached as EXHIBIT A.

      *L. "Excluded Assets" shall mean the following assets of Schweizerhall,
Inc.:

            *1.all cash of Schweizerhall, Inc. on hand, in any bank, money
market account, mutual fund, unit investment trust, all certificates of
deposit, letters of credit in favor of Schweizerhall, Inc. and other readily
marketable securities or other cash equivalents of Schweizerhall, Inc.

            *2.all assets of Schweizerhall, Inc. which are not related to the
Pharmaceutical Ingredients Business;

            *3.all prepaid taxes;

            *4.all refunds for Federal, state or local franchise taxes or fees
of any nature whatsoever for periods prior to the Closing Date;

            *5.corporate minute books, stock transfer records and tax returns
and tax and accounting records relating to Schweizerhall, Inc.;

            *6.the name "Schweizerhall" and all names, marks and logos which
use or include it, all variations thereof and any combination of words or
phrases including or using it;

            *7.all employee benefit plans or arrangements, collective
bargaining agreements, deferred compensation plans, agreements or commitments
and other plans, agreements and commitments relating to current and former
independent contractors, current and former directors, and current and former
employees of Schweizerhall, Inc.;

            *8.all insurance policies and the coverage provided thereunder;

            *9.all shares of stock owned by Schweizerhall, Inc. in
Schweizerhall Manufacturing Company and Schweizerhall Development Company;

            *10.notes receivable and loans receivable owed by Schweizerhall,
Inc. employees;

            *11.the Chempax software system and the computer hardware relating
thereto upon which it is installed; and

            *12.the lease for Schweizerhall, Inc.'s office in Piscataway, N.J.

      *M."Financial Statements" shall mean the audited balance sheets of
Schweizerhall, Inc. or the Subsidiary Companies, as the case may be, for the
three years ended December 31, 2000 and the audited income statements of
Schweizerhall, Inc. or the Subsidiary Companies, as the case may be, prepared
on an accrual basis for three years ended December 31, 2000.

      *N. "Hong Kong Subsidiary Company" shall mean Schweizerhall Pharma Ltd.

      *O. "Inventory Value" shall mean, with respect to the Subsidiary
Companies, the book value of the unsold inventory of the Subsidiary Companies
on the Closing Date, based on its cost and after giving effect to returns,
discounts and credits and after crediting intercompany markups, costs, fees and
charges, and shall mean, with respect to Schweizerhall, Inc., the book value of
the unsold inventory of Schweizerhall, Inc. on the Closing Date, based on its
cost and after giving effect to returns, discounts and credits and after
crediting intercompany markups, costs, fees and charges.

      *P."Material Adverse Effect" shall mean, with respect to the Subsidiary
Companies and Schweizerhall, Inc., a change or effect that is materially
adverse to the business, assets, properties, results of operations or financial
condition of the Subsidiary Companies and Schweizerhall, Inc., taken as a
whole; and shall mean with respect to Aceto and Purchaser a change or effect
that is materially adverse to the business, assets, properties, results of
operations or financial condition of Aceto and Purchaser, taken as a whole.

      *Q."Non-Interest Bearing Liabilities" shall mean accounts payable,
accrued expenses and deferred taxes.

      *R. "Purchaser" as used herein shall mean, jointly and severally, Aceto
and Aceto Holding B.V. (or another wholly owned subsidiary of Aceto in the
event Aceto determines not to form Aceto Holding B.V., I.O. to effect the
purchase of the Shares).

      *S."Singapore Subsidiary Company" shall mean Schweizerhall Pte. Ltd.

      *T."Stock Purchase Note" shall mean, collectively, the promissory note or
notes described in Section 2.3.

                               ARTICLE II.

                    ARTICLE SALE AND PURCHASE OF THE SHARES

      *A.Sale and Purchase of the Shares.

            *1.Subject to the concurrent acquisition of the Assets from
Schweizerhall, Inc., the concurrent acquisition by Aceto of the Shares
representing the ownership interest in Chemische Fabrik's Hong Kong and
Singapore Subsidiary Companies as provided below, and the terms and conditions
contained herein, Chemische Fabrik agrees to sell, transfer, assign, convey and
deliver to Purchaser, and Purchaser hereby agrees to purchase and accept from
Chemische Fabrik, on the Closing Date, all right, title and interest in and to
the Shares (other than the Shares representing its ownership of its Hong Kong
and Singapore Subsidiary Companies), free and clear of any liens, pledges,
security interests, claims or encumbrances of any kind, together with any and
all indicia of ownership of said Shares and for those countries in which
recordation or other official act is required, to perform such acts, at
Chemische Fabrik's cost and expense, so as to assure full and unqualified
record and beneficial ownership of said Shares in Purchaser or its nominees.

            *2.Subject to the concurrent acquisition of the Assets from
Schweizerhall, Inc., the concurrent acquisition by Purchaser of the Shares
(other than the Shares representing the ownership interest in Chemische
Fabrik's Hong Kong and Singapore Subsidiary Companies), and the terms and
conditions contained herein, Chemische Fabrik agrees to sell, transfer, assign,
convey and deliver to Aceto, and Aceto hereby agrees to purchase and accept
from Chemische Fabrik, on the Closing Date, all right, title and interest in
and to the Shares representing the ownership of its Hong Kong and Singapore
Subsidiary Companies, free and clear of any liens, pledges, security interests,
claims or encumbrances of any kind, together with any and all indicia of
ownership of said Shares and for those countries in which recordation or other
official act is required, to perform such acts, at Chemische Fabrik's cost and
expense, so as to assure full and unqualified record and beneficial ownership
of said Shares in Purchaser or its nominees.  For the purposes of this
Agreement, all references to Purchaser herein shall be deemed to refer to Aceto
to the extent such references relate to the Shares of Chemische Fabrik's Hong
Kong and Singapore Subsidiary Companies to be purchased by Aceto.

      *B.THE STOCK PURCHASE PRICE.  The aggregate consideration (the "Stock
Purchase Price") payable to Chemische Fabrik by Purchaser for the Shares as
provided herein shall be as follows:

            *1.400,000 Aceto Shares exempt from registration under the
Securities Act of 1933, as amended:

            *2.an amount equal to sixty percent (60%) of the Inventory Value of
the Subsidiary Companies on the Closing Date;

            *3.an additional amount equal to the Current Assets and cash of the
Subsidiary Companies LESS the Non-Interest Bearing Liabilities of the
Subsidiary Companies  as reflected on the books of the Subsidiary Companies on
the Closing Date;

            *4.an additional amount equal to sixty percent (60%) of the cost to
the Subsidiary Companies of the goods in transit to the Subsidiary Companies as
reflected on the books of the Subsidiary Companies on the Closing Date if the
Subsidiary Companies paid for such goods in transit prior to the Closing Date,
which amount shall be included in the Inventory Value in the Stock Purchase
Note and the Closing Date Balance Sheet; and

            *5.an additional amount equal to sixty percent (60%) of the cost to
the Subsidiary Companies of the goods in transit from the Subsidiary Companies
to their customers as reflected on the books of the Subsidiary Companies on the
Closing Date if the goods in transit have been paid for by the Subsidiary
Companies and the customer has not yet been billed for such goods, which amount
shall be included in the Inventory Value in the Stock Purchase Note and the
Closing Date Balance Sheet.

      (For the purpose of determining the amount to be paid on the Closing Date
only, the above Closing Date calculations of the Stock Purchase Price shall be
reasonably estimated by Chemische Fabrik and the Subsidiary Companies as of the
most recent date practicable prior to the Closing Date (but no earlier than two
(2) weeks prior to the Closing Date) pursuant to their review of the regular
books of account of the Subsidiary Companies maintained in the ordinary course
of business and prepared in accordance with their respective jurisdiction's
generally accepted accounting principles consistently applied.  Following the
Closing Date, the final Stock Purchase Price shall be determined as provided in
Section 2.4.

      *C. FORM OF PAYMENT OF THE STOCK PURCHASE PRICE.

            *1.The 400,000 Aceto Shares shall be paid to Chemische Fabrik;

            *2.The Stock Purchase Price attributable to the amount referenced
in Section 2.2(c) above shall be paid in euros by bank check,
wire transfer or certified check at the Closing; and

            *3.The balance of the Stock Purchase Price shall be paid with a
non-negotiable unsecured promissory note of Purchaser (if there is more than
one Purchaser, each Purchaser will execute a separate promissory note with
respect to the Subsidiary Companies such Purchaser is purchasing), in the form
attached as EXHIBIT B hereto, for the amount of such balance of the Stock
Purchase Price in euros, payable in one (1) year and bearing simple interest at
three percent (3%). Said note shall provide for interest to be payable monthly
(on the earlier of the last business day or the 30{th} day of the following
month), along with payments of principal based on the Closing Date Inventory
sold during that month (determined on a FIFO basis), and shall be guaranteed by
Aceto.  At the time of each such monthly note payment, Purchaser shall provide
a schedule showing the Closing Date Inventory sold during the preceding month
and the sale price thereof and the Subsidiary Companies' cost thereof.  The
outstanding balance, if any, of each said note shall be payable on the one (1)
year anniversary of the Closing Date.  If any particular type of product is
included in the Closing Date Inventory and is also sold by Aceto or Purchaser,
then any sale of such product out of any Subsidiary Company location shall be
deemed to have occurred out of the Closing Date Inventory at such location
until all such product in the Closing Date Inventory at such location is sold,
absent clear evidence to the contrary.

      *D.PREPARATION OF CLOSING DATE BALANCE SHEET.  As soon as reasonably
practicable after the Closing Date and in any event no later than April 20,
2001, Chemische Fabrik and the Subsidiary Companies shall prepare and present
to Purchaser a balance sheet setting forth in reasonable detail the Inventory
Value, Current Assets, cash, Non-Interest Bearing Liabilities, goods in
transit, in each case as of the Closing Date (the "Closing Date Balance
Sheet"), which shall reflect the amounts carried on the regular books of
account of the Subsidiary Companies, maintained in the ordinary course of
business and prepared in accordance with their respective jurisdiction's
generally accepted accounting principles consistently applied.  Purchaser and
its representatives shall have the right to review the workpapers of the
Subsidiary Companies used in preparing the Closing Date Balance Sheet.

      .The amounts set forth in the Closing Date Balance Sheet shall be binding
on Purchaser and the Subsidiary Companies for the purposes set forth herein
unless Purchaser gives written notice of disagreement with any of the amounts
within thirty (30) days after the receipt by Purchaser of the Closing Date
Balance Sheet or the last revision thereof by the Subsidiary Companies,
specifying in reasonable detail, insofar as possible, the nature and extent of
the disagreement.  If Purchaser and the Subsidiary Companies are unable to
resolve any disagreement within thirty (30) days after Purchaser gives the
Subsidiary Companies notice thereof, the disagreement shall be referred for
final determination to Price, Waterhouse, Cooper Ltd. or, if such firm declines
to act, to KPMG LLP, or if such firm declines to act, to any other accounting
firm as may be reasonably acceptable to Purchaser and the Subsidiary Companies.
The determination of the disagreement by the accounting firm shall be
conclusive, non-appealable and binding upon Purchaser and the Subsidiary
Companies as to the calculation of Inventory Value, Current Assets, cash, Non-
Interest Bearing Liabilities, goods in transit; provided, however, that
Purchaser and the Subsidiary Companies shall retain all of their other rights
which arise as a result of this Agreement.  Purchaser and the Subsidiary
Companies agree that the procedures established by this Section
2.4 shall constitute the exclusive procedures for
calculating the Inventory Value, Current Assets, cash, Non-Interest Bearing
Liabilities, goods in transit as of the Closing Date.

      .Chemische Fabrik and Purchaser shall each pay the fees and disbursements
of their respective internal and independent accountants and other personnel
incurred in the initial preparation, review and final determination of the
Closing Date Balance Sheet.  The fees and disbursements of the accounting firm
to which any disagreement is referred pursuant to this Section
2.4 shall be borne by the Subsidiary Companies and
Purchaser in the proportion determined by such accounting firm based on the
merits of the respective positions taken by the Subsidiary Companies and
Purchaser with regard to their disagreement.

      .Within ten (10) days after the final determination of the Closing Date
Balance Sheet, an adjustment shall be made to the Stock Purchase Price if the
Closing Date estimates of the Stock Purchase Price are different than the
amounts on the Closing Date Balance Sheet.  Purchaser shall pay Chemische
Fabrik on such date additional cash in the amount of the adjustment, if such
Closing Date calculation of the Stock Purchase Price is less than the Stock
Purchase Price calculated based on the Closing Date Balance Sheet, as finally
determined as set forth above.  Chemische Fabrik shall return to Purchaser on
such date cash in the amount of the adjustment, if such Closing Date
calculation of the Stock Purchase Price is more than the Stock Purchase Price
calculated based on the Closing Date Balance Sheet, as finally determined as
set forth above.

      *E.POSSIBLE ADJUSTMENT OF THE STOCK PURCHASE PRICE FOR INVENTORY SOLD. On
March 31, 2002, Purchaser shall determine the value of the Inventory that was
purchased from the Subsidiary Companies and sold by Purchaser during the period
beginning on the Closing Date and ending on March 31, 2002.  Each individual
lot of Closing Date Inventory sold shall be valued at each location where it is
held on a first-in-first-out (FIFO) basis at the lesser of its cost (I.E., the
transfer price paid by Purchaser) or market (I.E., Purchaser's selling price).
For the purpose of this possible adjustment, if the total value of the Closing
Date Inventory sold during such period (as determined in accordance with the
preceding sentence) is more than the amount paid by Purchaser for all of the
Closing Date

 .Inventory of the Subsidiary Companies on the Closing Date, Purchaser shall pay
to Chemische Fabrik, as an adjustment to the Stock Purchase Price, an amount in
euros equal to such excess value within thirty (30) days after March 31, 2002.
In addition, Chemische Fabrik shall have the option, exercisable within thirty
(30) days after March 31, 2002 to purchase the unsold Closing Date Inventory,
if any, for One Dollar ($1.00).  Chemische Fabrik shall have a one-time right,
directly or through its authorized agents or auditors, at Chemische Fabrik's
own expense, during normal business hours and upon reasonable notice to examine
the Subsidiary Companies' accounting records pertinent to the Inventory sales
for the purpose of verifying the amounts due under this section.

      *F.POSSIBLE ADJUSTMENT OF THE STOCK PURCHASE PRICE FOR TAX SAVINGS.

            *1. Subsequent to a final governmental tax audit or the expiration
of the statute of limitations for a governmental objection and review,
Purchaser shall pay in euros to Chemische Fabrik, if and when received by
Purchaser, fifty percent (50%) of the Net Value of any tax benefit realized by
Purchaser due to net operating losses or tax credits from shareholder owners of
SLR Holding Germany, on the books and records of Chemische Fabrik and its
Subsidiary Companies at the Closing.  "Net Value" shall reflect all liabilities
that Purchaser may be obligated to pay due to such tax savings, including, but
not limited to, taxes and accounting fees.

            *2.Purchaser and Chemische Fabrik agree that until an adjustment,
if any, is agreed upon, at least once a year, Purchaser and Chemische Fabrik
shall confer and seek, in good faith, to reach a final adjustment of the Stock
Purchase Price due to net operating losses or tax credits transferred pursuant
to the sale and purchase of the Shares.  This provision shall not obligate
either party to reach such a final adjustment.

            *3.Chemische Fabrik shall have a one-time right, directly or
through its authorized agents or auditors, at Chemische Fabrik's own expense,
during normal business hours and upon reasonable notice to examine the
Subsidiary Companies' accounting records pertinent to the Net Value for the
purpose of verifying the amounts due under this section.

      *G. GUARANTEE OF THE STOCK PURCHASE PRICE BY ACETO.  Aceto shall
guarantee the payment of the Stock Purchase Price in accordance with Section
2.3, as and if adjusted pursuant to Section 2.4 and/or 2.5
above, pursuant to the Guaranty attached hereto as
EXHIBIT C.

                                    ARTICLE III
               CLOSING OF SALE AND PURCHASE OF THE SHARES;
                   ARTICLE CONDITIONS TO CLOSING; DELIVERIES


      *A. CLOSING.  The closing of the sale and purchase of the Shares (the
"Stock Closing") shall be held on the Closing Date at or about 10:00 a.m.,
Eastern Time, in Basel, Switzerland or at such other time and place upon which
the parties shall agree.

      *B.CONDITIONS TO PURCHASER'S OBLIGATION TO PURCHASE THE SHARES.
Purchaser's obligation hereunder to purchase and pay for the Shares is subject
to the satisfaction, on or before the Closing Date, of the following
conditions, any of which may be waived, in whole or in part, by Purchaser in
its sole discretion, and Chemische Fabrik and its Subsidiary Companies shall
use their reasonable commercial efforts to cause such conditions to be
fulfilled:

            *1. SIMULTANEOUS CLOSING OF SALE AND PURCHASE OF THE ASSETS.  The
closing of the sale and purchase of the Assets as provided for in Article XII
herein, shall occur simultaneously with the Stock Closing.

            *2.REPRESENTATIONS AND WARRANTIES OF CHEMISCHE FABRIK AND
SCHWEIZERHALL HOLDING AG CORRECT; PERFORMANCE OF COVENANTS; SATISFACTION OF
CONDITIONS.  The representations and warranties of Chemische Fabrik and
Schweizerhall Holding contained in this Agreement (including the Exhibits and
Schedules hereto) and those otherwise made in writing by or on behalf of
Chemische Fabrik and/or Schweizerhall Holding in connection with the
transactions contemplated by this Agreement shall be true, complete and
accurate on and as of the Closing Date as though such representations and
warranties were made at and as of such date with only such exceptions as would
not in the aggregate have a Material Adverse Effect, and Chemische Fabrik and
Schweizerhall Holding shall have delivered to Purchaser a certificate signed by
an appropriate officer on behalf of Chemische Fabrik and Schweizerhall Holding
and dated the Closing Date, to such effect.  Chemische Fabrik and Schweizerhall
Holding shall have duly and properly performed, complied with, satisfied and
observed in all material respects each of its covenants, agreements, conditions
to closing and obligations contained in this Agreement to be performed,
complied with, satisfied and observed on or before the Closing Date, and
Chemische Fabrik and Schweizerhall Holding shall have delivered to Purchaser a
certificate signed by an appropriate officer on behalf of Chemische Fabrik and
Schweizerhall Holding, dated the Closing Date, to such effect.

            *3.  PURCHASE PERMITTED BY APPLICABLE LAWS.  The purchase and
payment for the Shares to be purchased by Purchaser hereunder shall not be
prohibited by any applicable law or governmental regulation.

            *4.  PROCEEDINGS; RECEIPT OF DOCUMENTS.  All corporate and other
proceedings taken or required to be taken by Chemische Fabrik in connection
with the transactions contemplated hereby and all documents incident thereto
shall have been taken and shall be reasonably satisfactory in form and
substance to Purchaser and its counsel, and Purchaser shall have received all
such information and such counterpart originals or certified or other copies of
such documents as Purchaser may reasonably request.  Chemische Fabrik shall
have caused the necessary recording, payment of fees, certification of
recording and any and all other measures necessary to effect the transfer of
the Shares to Purchaser free and clear of any liens, pledges, security
interests, claims or encumbrances of any kind.

            *5.  DELIVERY OF DOCUMENTS.  Chemische Fabrik shall have delivered,
or caused to be delivered, to Purchaser the following:

                  *a) corporate and tax good standing certificates and/or
      register extracts, of each of the Subsidiary Companies  from the
      respective jurisdictions in which of each of the Subsidiary Companies is
      incorporated or is qualified or registered as a foreign entity, if such
      jurisdiction issues such certificates or extracts;

                  *b)  U.S. Food and Drug Administration Drug Master Files and
      Dossiers and any and all similar documents issued by any foreign
      jurisdictions in which Chemische Fabrik or its Subsidiary Companies
      conduct business, with duly executed documents of assignment necessary
      for their transfer to Purchaser;

                  *c)  the Shares, with all duly executed documents and
      signatures necessary or appropriate for their transfer to Purchaser free
      and clear of any liens, pledges, security interest, claims or
      encumbrances of any kind, together with any and all indicia of ownership
      of said Shares and for those countries in which recordation or other
      official act is required, evidence reasonably satisfactory to Purchaser
      that such acts have been performed;

                  *d)  all share certificates which may be held by any third
      party (e.g. nominee shares) which evidence shares of capital stock held
      by such third party in any of the Companies free and clear of any liens,
      pledges, security interests, claims or encumbrances of any kind, together
      with any and all indicia of ownership of said Shares and for those
      countries in which recordation or other official act is required,
      evidence reasonably satisfactory to Purchaser that such acts have been
      performed;

                  *e) copies of the Certificate of Incorporation and By-Laws
      (or equivalent organizational documents) of each of the Subsidiary
      Companies certified as true, correct and complete by an officer of
      Chemische Fabrik;

                  *f)  all documents necessary or appropriate to change the
      authorized signatories of the Subsidiary Companies' bank accounts and to
      otherwise take possession and full operational control of the Subsidiary
      Companies and their respective assets;

                  *g)  an opinion of counsel to Chemische Fabrik in form and
      substance reasonably satisfactory to Purchaser;

                  *h)  the resignations of all the current officers and
      directors of the Subsidiary Companies, if requested by Purchaser upon
      reasonable notice; and

                  *i)  all other consents, agreements, schedules, documents,
      financial statements and exhibits required by this Agreement to be
      delivered by Chemische Fabrik or any Subsidiary Company, or reasonably
      requested by Purchaser, at or before the Closing.

            *6. DEBT.  Chemische Fabrik shall have caused each of the
Subsidiary Companies to satisfy in full their respective inter-company, long-
term debts and other debts not included in the calculation of the Stock
Purchase Price set forth on SCHEDULE 4.12(d), or shall have
made appropriate arrangements reasonably satisfactory to Aceto to satisfy such
debts on the Closing Date from the proceeds of the Stock Closing.

            *7. NO ADVERSE DECISION.  Except as set forth on SCHEDULE 3.2(H),
there shall be no action, suit, investigation or proceeding pending or
threatened by or before any court, arbitrator or administrative or governmental
body which seeks to restrain, enjoin, prevent the consummation of or otherwise
affect the transactions contemplated by this Agreement or questions the
validity or legality of any such transactions or seeks to recover damages or to
obtain other relief in connection with any such transactions.

            *8. NO ADVERSE CHANGE.  Since September 30, 2000 up to the Closing
Date, the Subsidiary Companies shall not have suffered any adverse change in
their respective business, affairs, prospects, financial condition, working
capital, assets, liabilities (absolute, accrued, contingent or otherwise),
reserves or operations, which change has a Material Adverse Effect, and
Chemische Fabrik shall have delivered to Purchaser a certificate signed by an
appropriate officer on behalf of Chemische Fabrik and dated the Closing Date,
to such effect.

            *9. SECURITIES LAW COMPLIANCE.  All actions and steps necessary to
assure compliance with applicable Federal, state and foreign securities laws by
Chemische Fabrik in connection with the sale of the Shares pursuant to this
Agreement, shall have been duly obtained and shall be effective on and as of
the Closing.

            *10. APPROVALS AND CONSENTS.  Chemische Fabrik shall have obtained
all authorizations, consents, rulings, approvals, licenses, franchises, permits
and certificates, or exemptions therefrom, by or of all governmental
authorities and non-governmental administrative or regulatory agencies,
domestic or foreign, having jurisdiction over Chemische Fabrik or the
Subsidiary Companies, their respective assets, this Agreement, the Shares or
the Stock Closing hereby, including, without limitation, the consents of all
third parties pursuant to existing agreements or instruments by which Chemische
Fabrik and/or its Subsidiary Companies may be bound, which are required for the
execution, delivery and performance of this Agreement and the consummation of
the transactions contemplated hereby, at no cost or other adverse consequence
to Purchaser, and all thereof shall be in full force and effect at the time of
Closing, and Chemische Fabrik shall have delivered to Purchaser a certificate
signed by an appropriate officer on behalf of Chemische Fabrik and
Schweizerhall Holding and dated the Closing Date, to such effect. Closing with
or without any of the foregoing will completely satisfy this condition.

            *11.EMPLOYMENT AGREEMENT.  Dr. Axel Mueller shall have entered into
an Employment Agreement with SLR Holding Germany in form and substance
satisfactory to Aceto, Schweizerhall Holding and their respective counsel, in
the form to be attached hereto as EXHIBIT D.

            *12.SUPPORT CONTRIBUTION OR EXPENSE.  All support, contribution or
expense allocation agreements with affiliated parties, including, but not
limited to, any such agreements listed on SCHEDULE 4.18
hereto, to which the Subsidiary Companies are a party, or a direct or indirect
beneficiary, shall have been terminated (unless otherwise instructed by Aceto),
at no cost or expense to the Subsidiary Companies.

      *C. CONDITIONS TO CHEMISCHE FABRIK'S OBLIGATION TO SELL AND CONVEY THE
SHARES.  Chemische Fabrik's obligation hereunder to sell and convey the Shares
is subject to the fulfillment of the following conditions on or prior to the
Closing Date, any of which may be waived, in whole or in part, by Chemische
Fabrik in its sole discretion, and Purchaser shall use its reasonable
commercial efforts to cause such conditions to be fulfilled.

            *1.SIMULTANEOUS CLOSING AND SALE AND PURCHASE OF THE ASSETS.  The
closing of the sale and purchase of the Assets as provided for in Article XII
herein shall occur simultaneously with the Stock Closing.

            *2.REPRESENTATIONS AND WARRANTIES OF PURCHASER CORRECT; PERFORMANCE
OF COVENANTS; SATISFACTION OF CONDITIONS.  The representations and warranties
of Purchaser in this Agreement shall be true, complete and accurate when made
and on and as of the Closing Date, as though such representations and
warranties were made at and as of such date, with only such exceptions as would
not in the aggregate have a Material Adverse Effect, and Purchaser shall have
delivered to Chemische Fabrik a certificate signed by an appropriate officer on
behalf of Purchaser and dated the Closing Date, to such effect. Purchaser shall
have duly and properly performed, complied with, satisfied and observed each of
its covenants, agreements, conditions to closing and obligations contained in
this Agreement to be performed, complied with, satisfied and observed on or
before the Closing Date, and Purchaser shall have delivered to Chemische Fabrik
a certificate signed by an appropriate officer on behalf of Purchaser and dated
the Closing Date, to such effect.

            *3. PURCHASE PERMITTED BY APPLICABLE LAWS.  The sale and purchase
of the Shares shall not be prohibited by any applicable law or governmental
regulation.

            *4. DELIVERY OF STOCK PURCHASE PRICE.  Purchaser shall have
delivered the Stock Purchase Price as hereinabove contemplated.

            *5. PROCEEDINGS: RECEIPT OF DOCUMENTS.  All corporate and other
proceedings taken or required to be taken by Purchaser in connection with the
transactions contemplated hereby and all documents incident thereto shall have
been taken and shall be reasonably satisfactory in form and substance to
Chemische Fabrik and its counsel, and Chemische Fabrik shall have received all
such information and such counterpart originals or certified or other copies of
such documents as they may reasonably request.

            *6. DELIVERY OF DOCUMENTS. Purchaser shall have delivered, or
caused to be delivered, to Chemische Fabrik the following:

                  *a) Corporate good standing certificates of Purchaser from
      the jurisdiction in which it is incorporated, to the extent available;

                  *b) the Stock Purchase Notes;

                  *c) the Aceto Guaranty;

                  *d) the Employment Agreement with Dr. Axel Mueller described
      in Section 3.1;

                  *e) the 400,000 Aceto Shares, with all documents and
      signatures necessary or appropriate for their transfer to or as directed
      by Chemische Fabrik free and clear of any liens, pledges, security
      interest, claims or encumbrances of any kind, together with any and all
      indicia of ownership of said Shares;

                  *f) copies of the Certificate of Incorporation and By-Laws
      (or equivalent organizational documents) of Purchaser, certified as true,
      correct and complete copies by an officer of Purchaser;

                  *g) an opinion of counsel to Purchaser in form and substance
      reasonably satisfactory to Chemische Fabrik;

                  *h) documents sufficient under the laws of the jurisdiction
      of organization of each Subsidiary Company to change the name of each
      Subsidiary Company pursuant to Section 8.5; and

                  *i) all other consents, agreements, schedules, documents and
      exhibits required by this Agreement to be delivered at or before the
      Closing.

            *7.NO ADVERSE DECISION.  There shall be no action, suit,
investigation or proceeding pending or threatened by or before any court,
arbitrator or administrative or governmental body which seeks to restrain,
enjoin, prevent the consummation of or otherwise affect the transactions
contemplated by this Agreement or questions the validity or legality of any
such transactions or seeks to recover damages or to obtain other relief in
connection with any such transactions.

            *8.APPROVALS AND CONSENTS.  Purchaser shall have duly obtained all
authorizations, consents, rulings, approvals, licenses, franchises, permits and
certificates, or exemptions therefrom, by or of all governmental authorities
and non-governmental administrative or regulatory agencies, domestic or
foreign, having jurisdiction over Purchaser, its respective assets, this
Agreement or the transactions contemplated hereby, including, without
limitation, the consents of all third parties pursuant to existing agreements
or instruments by which Purchaser may be bound, which are required for
Purchaser's execution, delivery and performance of this Agreement and the
consummation of the transactions contemplated hereby, at no cost or other
adverse consequence to Chemische Fabrik or the Subsidiary Companies, and all
thereof shall be in full force and effect at the time of Closing, and Purchaser
shall have delivered to Chemische Fabrik a certificate signed by an appropriate
officer on behalf of Purchaser and dated the Closing Date, to such effect.
Closing with or without any of the foregoing will completely satisfy this
condition.

            *9.SECURITIES LAW COMPLIANCE.  All actions and steps necessary to
assure compliance by Aceto with applicable Federal, state and foreign
securities laws in connection with the lawful sale of the Aceto Shares pursuant
to this Agreement, shall have been duly obtained and shall be effective on and
as of the Closing.

                              ARTICLE IV

          ARTICLE REPRESENTATIONS AND WARRANTIES OF CHEMISCHE FABRIK
                     ARTICLE AND SCHWEIZERHALL HOLDING AG

Chemische Fabrik and Schweizerhall Holding, jointly and severally,
represent and warrant to Purchaser and Aceto in connection with the Stock
Closing as follows:

      *A.ORGANIZATION AND GOOD STANDING.  Each of the Subsidiary Companies is,
or will be on the Closing Date, a subsidiary of Chemische Fabrik and a
corporation duly organized, validly existing and in good standing under the
laws of its jurisdiction of organization and has, or will have on the Closing
Date, the corporate power and authority to own or lease its properties and to
conduct its business as now conducted in the places where such properties are
now owned or leased or such business is now conducted.  Each of the Subsidiary
Companies is now or on the Closing Date will be duly qualified and in good
standing to conduct business as a foreign corporation in the jurisdictions
specified in SCHEDULE 4.1 annexed hereto, and these are the
only jurisdictions in which qualification is required, except where the failure
to so qualify would not have a Material Adverse Effect.

      *B.AUTHORITY.  Chemische Fabrik has the corporate authority to execute
and to perform this Agreement in accordance with its terms; the execution and
delivery of this Agreement and the consummation of the transactions
contemplated hereby does not and will not result in a breach, violation or
default or give rise to an event which with the giving of notice or after the
passage of time, or both, would result in a breach, violation or default of any
of the terms or provisions of the Subsidiary Companies' respective Certificates
of Incorporation, By-Laws or of any indenture, agreement, judgment, decree or
other instrument or restriction to which Chemische Fabrik is a party or by
which Chemische Fabrik or the Subsidiary Companies, the Shares or any of the
assets of the Subsidiary Companies may be bound or affected except for those
breaches, violations or defaults which would not have a Material Adverse
Effect; the execution and delivery of this Agreement have been and, as of the
Closing Date, the consummation of the transactions contemplated hereby will
have been, duly authorized, and no authorization or approval, whether of
Chemische Fabrik or the directors of Chemische Fabrik or the Subsidiary
Companies, or of governmental bodies or otherwise, will be necessary in order
to enable Chemische Fabrik to enter into and perform same; and this Agreement
constitutes a valid and binding obligation enforceable against Schweizerhall
Holding and Chemische Fabrik in accordance with its terms.

      *C.CAPITALIZATION.  The entire authorized capital stock of each of the
Subsidiary Companies now consists or at the Closing will consist of the shares
of capital stock set forth on SCHEDULE 4.3(a) annexed
hereto, which shares are presently issued and outstanding, and no shares of
capital stock are held in any such company's treasury.  All of the aforesaid
issued and outstanding shares of each of the Subsidiary Companies have been, or
at the Closing Date will be, duly authorized and validly issued and free of
pre-emptive rights.  To the extent available, SCHEDULE 4.3(a) annexed hereto
sets forth a true and complete history to the extent available of the
issuance and cancellation, where applicable, of all the shares of capital
stock of each of the Subsidiary Companies and the share certificates
evidencing same, which have heretofore been issued by each of the Subsidiary
Companies.  Chemische Fabrik is the record and beneficial owner of the amount
of shares of each of the Subsidiary Companies set forth next to its name in
SCHEDULE 4.3(a)and Chemische Fabrik will, on the Closing Date, be the record
and beneficial owner of the amount of shares of each of the Subsidiary
Companies set forth next to its name in SCHEDULE 4.3(a).  Except as described
in SCHEDULE 4.3(b), each of the Subsidiary Companies does
not have any obligation (contingent or other) to purchase, redeem or otherwise
acquire any shares of its capital stock or any interest therein or to pay any
dividend or make any distribution in respect thereof.  Except as set forth on
SCHEDULE 4.3(c) annexed hereto, there are no outstanding
preemptive, conversion or other rights, options, warrants or agreements granted
or issued by or binding upon Chemische Fabrik or any of the Subsidiary
Companies for the purchase or acquisition of any shares of capital stock of any
of the Subsidiary Companies, including, without limitation, the Shares.
Chemische Fabrik will at the Closing transfer to Purchaser good title to all of
the outstanding shares of each of the Subsidiary Companies, free and clear of
any mortgages, liens, pledges, security interests, charges, restrictions,
claims or encumbrances of any nature.

      *D.SUBSIDIARIES AND REPRESENTATIVE OFFICES.  Except as described in
SCHEDULE 4.4 annexed hereto, the Subsidiary Companies do
not have any other interest, direct or indirect, through stock ownership or
otherwise, in any other corporation, representative office or business
enterprise.  The business carried on by the Subsidiary Companies has not been
conducted through any direct or indirect subsidiary, representative office or
affiliate of the Subsidiary Companies, except for SLR Holding Germany and
Schweizerhall Benelux B.V. which own one or more of the Subsidiary Companies.

      *E.TITLE TO ASSETS.  Except as described in SCHEDULE
4.5 annexed hereto, Chemische Fabrik's Subsidiary Companies
have good title to all of their assets.  Except as described in SCHEDULE
4.5 annexed hereto, none of such assets, the Shares, or the
use thereof: (i) is subject to any easements or restrictions or to any
mortgages, liens, pledges, charges, security interests, encumbrances or
encroachments, or to any rights of others of any kind of nature whatsoever,
(ii) encroaches or infringes on the property or rights of another or (iii)
contravenes any applicable law or ordinance or any other administrative
regulation or violates any restrictive covenant or any provision of law.  There
are no agreements or arrangements between Schweizerhall Holding, Chemische
Fabrik and/or the Subsidiary Companies and any third person, which have any
effect upon the title to or other rights of the Subsidiary Companies respecting
the assets of the Subsidiary Companies.  The Subsidiary Companies own or has
the right to use to the extent necessary for the conduct of their respective
businesses as now conducted all of the assets, licenses, franchises, leases or
other properties necessary for conducting their respective businesses
substantially in the manner in which they have been conducted in the past and
no officer, director or shareholder of the Subsidiary Companies, nor any member
of any of their families, owns any property or rights, tangible or intangible,
which are used in the business of the Subsidiary Companies.

      *F.CONDITION OF PROPERTY.  All of the assets of the Subsidiary Companies
are in reasonable operating condition, free from any known defects, except for
(i) normal wear and tear and such minor defects as do not materially interfere
with the continued use thereof; or (ii) defects as set forth on SCHEDULE
4.6 annexed hereto.

      *G.ENVIRONMENTAL MATTERS.  Except as described in SCHEDULE
4.7(a), each of the  Subsidiary Companies has not, nor to
the knowledge of Chemische Fabrik and the Subsidiary Companies, have any
officers, directors, employees or affiliated entities acting on behalf of any
of the Subsidiary Companies, generated, transported, handled, disposed of, or
arranged for the disposal of any Environmentally Sensitive Material, as
hereinafter defined, except in accordance in all material respects with
applicable law.  Except as set forth in SCHEDULE 4.7(b),
the activities described in the previous sentence have not resulted in any
material expense to the Subsidiary Companies, or any owner of the Subsidiary
Companies' shares of capital stock, arising from any violation or alleged
violation of any Federal, state, local or foreign statutes, laws, or ordinances
governing the generation, transportation, handling, disposal or arranging for
the disposal of any Environmentally Sensitive Materials on behalf of any of the
Subsidiary Companies.  Further, each of the Subsidiary Companies has applied
for, and has been granted, all requisite material permits, licenses,
authorizations, and certifications necessary for the generation,
transportation, handling, or disposal of any Environmentally Sensitive Material
necessary for the activities of such Subsidiary Companies and has listed on
SCHEDULE 4.7 (c) and attached copies of any Notices of
Violation, Letters of Notification, or other enforcement document or written
threat of enforcement issued to any of its Subsidiary Companies by any agency,
either state, Federal or foreign, charged by law or regulation with the
enforcement of the Federal, state, local or foreign statutes, laws, or
ordinances governing environmental or health matters regarding any alleged
violation of any Federal, state, local or foreign statutes, laws, or ordinances
governing the generation, transportation, handling, disposal or arranging for
the disposal of any Environmentally Sensitive Materials. Since owned directly
or indirectly by Schweizerhall Holding, none of the Subsidiary Companies has
disposed of any Environmentally Sensitive Materials in violation of any
applicable laws or regulations. For the purposes of this Section 4.7,
"Environmentally Sensitive Material" shall have the same meaning and shall
include the same substances as currently are described in the definition of
Hazardous Substances as defined in the Comprehensive Environmental Response
Compensation and Liability Act, as amended (CERCLA), 42 U.S.C. <section> 9601
(14), and set out with particularity in 40 C.F.R. <section> 302.4, the
definition of Hazardous Waste as defined in RCRA 42 U.S.C. <section> 6901, ET.
SEQ. and which is further defined in 40 C.F.R. <section> 261.21 - 261.24 (as to
hazardous by characteristic), 40  C.F.R. <section><section> 261-31 - 261.33 (as
to listed wastes), or the definition of Hazardous Waste or Constituents in App.
VIII to 40 C.F.R. Part 261 and shall also include any other substance, material
or waste designated as "hazardous" for purposes of regulating or imposing
liability or standards of conduct concerning the generation, transportation,
disposal or arranging for the disposal of such substance, material or waste
under other Federal, state, local or foreign statutes, laws, ordinances, codes
or regulations currently in force.

      *H.PATENTS, TRADEMARKS AND COPYRIGHTS.  The Subsidiary Companies own the
respective patents, trademarks, copyrights and trade names and applications and
registrations therefor as listed in SCHEDULE 4.8 annexed
hereto, and except as stated in such schedule have not granted and prior to the
Closing Date will not grant any licenses to use such patents, trademarks,
copyrights or trade names.  No other patents, trademarks, copyrights or trade
names are owned by the Subsidiary Companies.  There are no patents, trademarks,
trade names, copyrights, technology or know-how and processes with respect to
which the Subsidiary Companies require a grant of right and which are used in
or necessary for the conduct of their business as heretofore conducted.  No
claims have been asserted in writing and no claims are pending or, to the
knowledge of the Subsidiary Companies, threatened, except as described in
SCHEDULE 4.8 annexed hereto, by any person to the use of
any of the patents, trademarks, copyrights or trade names or applications
therefore owned by the Subsidiary Companies, and Chemische Fabrik and  its
Subsidiary Companies do not know of any valid basis for any such claim, and the
use of such patents, trademarks, copyrights or trade names by the Subsidiary
Companies does not infringe on the rights of any person.  To the best of
Chemische Fabrik's and its Subsidiary Companies' knowledge, there are no
material infringements of any of the Subsidiary Companies' patents, trademarks,
copyrights, trade names or trade secrets.

      *I.DRUG MASTER FILES AND DOSSIERS.  The Subsidiary Companies own the Drug
Master Files and Dossiers as listed in SCHEDULE 4.9 annexed hereto.

      *J.COMPLIANCE WITH LAW.  Except as described in SCHEDULE
4.10(a) annexed hereto, the Subsidiary Companies have
conducted their business operations since their acquisition directly or
indirectly by Schweizerhall Holding in accordance with all applicable laws and
regulations in all material requests, and are not in violation in any material
respect of any laws, governmental orders, rules, regulations or ordinances to
which any of their property, real, personal, mixed, tangible or intangible, or
their business related to such properties, are subject.  The Subsidiary
Companies have all permits, licenses, orders or approvals of any federal,
state, local or foreign governmental or regulatory body required in order to
permit them to carry on their respective businesses as presently conducted.
All such permits licenses, orders and approvals are in full force and effect
and to the knowledge of Chemische Fabrik and the Subsidiary Companies no
suspension or cancellation of any of them is threatened.  Except as described
in SCHEDULE 4.10(b), Chemische Fabrik and the Subsidiary
Companies have no knowledge of any violation of law by any of the Subsidiary
Companies and nor is any of the Subsidiary Companies in receipt of any written
notice of claim of any violation or alleged violation of any such law or
regulation.  Neither Chemische Fabrik nor any of the Subsidiary Companies has
any actual knowledge of any pending or threatened change in any law or
regulation which, if enacted, would materially impair the business or assets of
any of the Subsidiary Companies.

      *K.AGREEMENTS. SCHEDULE 4.11(a) is a true and complete
list of all material contracts, instruments, commitments, and agreements,
whether oral or written, presently in effect to which any of the Subsidiary
Companies is a party or to which any of the Subsidiary Companies or any of
their assets or the Shares is subject, including, without limitation, the
following:

            *1.any plan or contract or arrangement in excess of $100,000, oral
or written, providing for employment or consulting services, bonuses,
commissions, pensions, stock purchase or stock option or other stock rights,
deferred compensation, retirement or severance payments, profit sharing, or the
like;

            *2.any instrument or arrangement in excess of $100,000 evidencing
or relating in any way to (i) indebtedness for borrowed money by way of direct
loan, purchase money obligation, conditional sale, lease purchase arrangement,
guarantee or otherwise, (ii) confession of judgment or agreed judgment, (iii)
liens, encumbrances or security interests, (iv) guaranties or indemnification
or (v) investments in any person;

            *3.any contract containing provisions limiting the freedom of any
of the Subsidiary Companies to engage in any business, compete in any line of
business or market any particular type of product, in any geographic area or
with or to any person except for those limitations which would not have a
Material Adverse Effect;

            *4.any contract in excess of $100,000 for the purchase or sale of
any materials, products or supplies which contains any escalator, renegotiation
or redetermination clause or which commits it for a fixed term not subject to
termination on notice of sixty (60) days or less;

            *5.any contract, accepted order or commitment for the purchase or
sale of materials, products or supplies having a total contract price in excess
of $100,000;

            *6. any license, sublicense, royalty, lease or sublease agreement
in excess of $100,000, whether as licensor, sublicensor, licensee, sublicensee,
lessor, sublessor, lessee, sublessee or otherwise, or any agreements with
dealers, vendors, customers, suppliers, sales representatives, any governmental
entity, fund or university, or any agents, marketing representatives, brokers
or distributors;

            *7.any joint venture contract, arrangement, or other agreement in
excess of $100,000 involving a sharing of profit or expenses, or any joint or
other technology development, cooperation, or exchange contract or arrangement
in excess of $100,000;

            *8.agreements providing for disposition of the business or any
assets in excess of $100,000 or shares of the capital stock of Chemische Fabrik
or any of its Subsidiary Companies; agreements of merger or consolidation to
which Chemische Fabrik or any of its Subsidiary Companies is a party; or any
confidentiality agreements or letters of intent with respect to the foregoing;
and

            *9.contracts in excess of $100,000 requiring the performance of
consulting services or other services.

Each such agreement is a valid and subsisting agreement and in full force
and effect, all payments due to or from any of the Subsidiary Companies
thereunder have been made, there are no disputes or suits or actions at law or
otherwise pending or, to the knowledge of Chemische Fabrik and the Subsidiary
Companies, threatened thereunder, and such agreements are the only agreements
or arrangements of this nature.  True, complete, and correct copies of each
such agreement will be supplied to Purchaser on or before the close of business
(New York City time), on February 22, 2001.  Except as described in SCHEDULE
4.11(b), the Subsidiary Companies, their assets or the
Shares are not subject to any material contract, instrument, commitment or
agreement, whether oral or written, presently in effect, which is subject to
cancellation, termination, forfeiture or renegotiation upon sale of the Shares
to Purchaser.  None of the Subsidiary Companies has any outstanding contracts
or accepted orders at less than the contract price customary on their part
involving $100,000 in aggregate.  None of the Subsidiary Companies has any
outstanding contracts or accepted orders for the purchase of materials,
products or supplies by them at more than the contract price customary on their
part involving $100,000 in aggregate.

      *L.FINANCIAL STATEMENTS.

            *1.Attached hereto as SCHEDULE 4.12(a) is a true
and correct copy of the Financial Statements of the Subsidiary Companies except
that the audited Financial Statements for the year ended December 31, 2000
shall be delivered to Aceto and attached to this Agreement once such statements
have been completed, which, in any event, shall be ten (10) business days prior
to the Closing Date.  The Financial Statements (which includes the to-be-
prepared audited Financial Statements for the year ended December 31, 2000)
have been prepared on a consistent basis in accordance with the Subsidiary
Companies' local equivalent of generally accepted accounting principles,
consistently applied, and fairly present, in all material respects, the
financial position and results of operations of the Subsidiary Companies for
the periods covered thereby.  The books and records respectively maintained by
the Subsidiary Companies upon which the Financial Statements are based are true
and correct in all material respects and accurately reflect the business of the
Subsidiary Companies, including their income, expenses, assets and liabilities.
Except to the extent reflected or reserved against in the Balance Sheet, or as
set forth on SCHEDULE 4.12(b) annexed hereto, or executory
obligations under agreements or instruments to which a Subsidiary Company may
be a party, or liabilities or obligations incurred in the ordinary course of
business since the Balance Sheet Date, Chemische Fabrik and its Subsidiary
Companies have no material liability of any nature, whether absolute, accrued,
contingent or otherwise and whether due or to become due, including, without
limitation, any liability for taxes for any period prior to such date.  Except
as described on SCHEDULE 4.12(c) annexed hereto, since
September 30, 2000, there have been no material adverse changes in the business
or in the financial condition of the Subsidiary Companies, other than changes
in the ordinary course of business which in the aggregate would not have a
Material Adverse Effect.  SCHEDULE 4.12(d) sets forth a
true and complete list of the inter-company, long-term debts and other debts of
the Subsidiary Companies not included in calculating the Stock Purchase Price,
indicating both the principal amount and interest due thereon.

            *2.Attached hereto as SCHEDULE 4.12(e) are true
and correct copies of the balance sheets of the Subsidiary Companies as at
September 30, 2000 and the income statements of the Subsidiary Companies
prepared on an accrual basis for the nine (9) months ended September 30, 2000
(the "Unaudited Financial Statements").  The Unaudited Financial Statements
have been prepared on a consistent basis in accordance with the Subsidiary
Companies' local equivalent of generally accepted accounting principles,
consistently applied, and fairly present the financial position and results of
operating of the Subsidiary Companies for the periods covered thereby.

            *3.All accounts receivable shown or to be shown on the September
30, 2000, December 31, 2000 and Closing Date balance sheets constitute BONA
FIDE accounts receivable arising in the ordinary course of the business of the
Subsidiary Companies; and are subject to no known conditions to payment and no
known offsets, counterclaims, defenses of any kind, returns (including, without
limitation, distributor's rights to return products from inventory), allowances
or credits, other than any allowance for doubtful accounts shown thereon, and
to no material known warranty claims.  Except as described in SCHEDULE
4.12(f), there are no account debtors or note debtors (x)
delinquent in payment by more than ninety (90) days or (y) who have refused or,
to the knowledge of the Subsidiary Companies, threatened or refuse to make
payment.

      *M.LITIGATION.  Except as set forth and described in detail on SCHEDULE
4.13, there are no actions, suits, proceedings or investigations (including any
purportedly on behalf of the Subsidiary Companies) pending, or, to the
knowledge of the Subsidiary Companies, threatened or imminent against or
affecting the business or properties of the Subsidiary Companies whether at law
or in equity or admiralty or before or by any governmental department,
commission, board, agency, court or instrumentality, domestic or foreign; nor
are the Subsidiary Companies, operating under, subject to, in violation of or
in default with respect to, any judgment, order, writ, injunction or degree of
any court or other governmental department, commission, board, agency or
instrumentality, domestic or foreign.  Except as set forth and described in
detail on SCHEDULE 4.13, no inquiries have been made directly to the Subsidiary
Companies by any governmental agency which might form the basis of any such
action, suit, proceeding or investigation, or which might require the
Subsidiary Companies to undertake a course of action that would involve any
expense nor do the Subsidiary Companies have any knowledge or information as to
a potential inquiry, action, suit proceeding or investigation.  Except as set
forth and described in detail on SCHEDULE 4.13, no present or former employee
of the Subsidiary Companies has made any filing with the any governmental
agency asserting any claim based on alleged race, gender (including, without
limitation, sexual harassment), age or other type of discrimination by the
Subsidiary Companies.

      *N.SALARIES.  SCHEDULE 4.14 annexed hereto sets forth a true and complete
list, as of the date of this Agreement, of all of the persons who are employed
by the Subsidiary Companies, together with their country of employment and
their current compensation, fringe benefits and bonuses paid or to be paid or
the methods of computing such compensation and bonuses, for the current fiscal
year.

      *O. TAXES.  All taxes imposed by the United States, by any foreign
country and by any state, municipality, subdivision or instrumentality of the
United States or of any foreign country or by any other taxing authority, which
are due or payable by the Subsidiary Companies and all price redetermination or
renegotiation claims asserted or that may be asserted, have been paid in full
or adequately provided for by reserves shown in the records and books of
account of the Subsidiary Companies, and will be so paid or provided for on the
Closing Date.  All income tax returns for the Subsidiary Companies have been
timely filed (or extensions for the filing of which have been timely requested)
with the taxing authorities having jurisdiction thereof since 1997 as annexed
in SCHEDULE 4.15 (A) hereto, and no extension of time for the assessment of
deficiencies for any such years is in effect.  Except as set forth on SCHEDULE
4.15(B)  annexed hereto, no tax deficiency has been proposed or, to the
knowledge of the Subsidiary Companies, threatened against the Subsidiary
Companies, and there are no tax liens upon any of the assets or properties of
the Subsidiary Companies.

      *P.ABSENCE OF CHANGES.  Except as set forth on SCHEDULE 4.16 attached
hereto, from September 30, 2000 to the date of this Agreement, the Subsidiary
Companies have conducted their operations in the ordinary and usual course and
there has been no change since that date in the financial condition or in the
business or properties of the Subsidiary Companies which would have a Material
Adverse Effect, and there has not been:

            *1.any declaration, setting aside or payment of any dividend or
other distribution of any assets of any kind whatsoever with respect to any
shares of the capital stock of the Subsidiary Companies or any direct or
indirect redemption, purchase or other acquisition of any such shares of the
capital stock of the Subsidiary Companies or any issuance of securities or any
rights whatsoever to acquire securities;

            *2.any dispute or difficulty with labor relations adversely
affecting the business of the Subsidiary Companies which, if not resolved or
resolved adversely to the Subsidiary Companies, would have a Material Adverse
Effect;

            *3.any license, sale, transfer, pledge, lien, security interest,
mortgage or other disposition of any tangible or intangible assets with a book
value of more than $100,000;

            *4.any material change in the accounting methods or practices
followed by the Subsidiary Companies, in depreciation or amortization policies
or rates theretofore adopted by the Subsidiary Companies;

            *5.any single capital expenditure or commitment therefor by the
Subsidiary Companies in excess of $100,000, or such capital expenditures in the
aggregate in excess of $100,000, for additions to property, plant or equipment
of the Subsidiary Companies;

            *6.any material changes in the manner in which the Subsidiary
Companies extend discounts or credit or otherwise deal with customers, vendors,
suppliers, distributors or sales representatives;

            *7.any agreement or commitment relating to the sale by the
Subsidiary Companies of any fixed assets with a book value of more than
$100,000;

            *8.any outstanding contract or commitment which will result in any
loss in excess of $100,000 to the Subsidiary Companies upon completion of
performance thereof;

            *9.any grant by the Subsidiary Companies of any power of attorney
(whether revocable or irrevocable) to any person that is or may hereafter be in
force for any purpose whatsoever;

            *10.the creation of any lien of record or guarantee, or any
investment in any person in excess of $100,000;

            *11.any steps taken that have, or are likely to result in, any
Material Adverse Effect in the assets, liabilities, business or goodwill of the
Subsidiary Companies; or

            *12.any commitment to do any of the acts or things specified in
items (a) though (m) of this Section 4.16.

      *Q.INSURANCE. The Subsidiary Companies maintain insurance against all
customary losses.  SCHEDULE 4.17 annexed hereto contains a complete list of all
policies of insurance held by the Subsidiary Companies, showing for each policy
(i) the owner, (ii) the coverage, (iii) the amount of premium properly
allocable thereto, (iv) the name of the insurer, (v) the termination date of
the policy and (vi) all claims made thereunder. All such policies are in full
force and effect, all premiums with respect thereto covering all periods up to
and including the Closing Date have been paid, and no notice of cancellation or
termination has been received with respect to any such policy. The Subsidiary
Companies have not failed to give any notice or present any material claim
thereunder in a due and timely fashion.  The Subsidiary Companies will have in
force at Closing from and including January 1, 1999 through and including the
Closing Date product liability insurance with limits of liability of at least
Fifty Million Swiss Francs (CHF50,000,000) per occurrence, with appropriate
"tail" provisions to insure against claims made after the Closing Date for
products sold prior to the Closing Date for the applicable statute of
limitations relating thereto.

      *R.TRANSACTIONS WITH AFFILIATES. Except as described in SCHEDULE 4.18
annexed hereto, there are no loans, leases, royalty agreements, employment
contracts, service agreements, finance agreements, purchase agreements, sale
agreements, brokering agreements, jobbing agreements, consulting agreements,
agency agreements, distribution agreements, development agreements, independent
agreements, joint venture agreements, partnership agreements, support or
contribution agreements, expense allocation agreements or any other agreement
or arrangement, oral or written, between the Subsidiary Companies, on the one
hand, and Schweizerhall Holding, Chemische Fabrik, Schweizerhall, Inc. or any
affiliates, subsidiaries, parent companies, past or present principal
stockholder, officer, employee, consultant or director of Schweizerhall
Holding, Chemische Fabrik, the Subsidiary Companies or Schweizerhall, Inc. (or
any member of the immediate family of such stockholder, officer, employee,
consultant or director), on the other hand.

      *S.BROKERS. There has been no broker or finder representing Schweizerhall
Holding, Chemische Fabrik or the Subsidiary Companies involved in any manner in
the negotiations leading to this sale and purchase of the Shares or the
consummation of such transaction contemplated hereby, and Chemische Fabrik
agrees to indemnify Purchaser and the Subsidiary Companies against and hold
Purchaser and the Subsidiary Companies harmless from any claim made by any
party for a broker's or finder's fee or other similar payment based upon any
agreements, arrangements or understanding made by Chemische Fabrik.

      *T.EMPLOYEE BENEFIT PLANS.  All employee benefit plans maintained or
contributed to by the Subsidiary Companies are described in SCHEDULE 4.20
annexed hereto.  To the knowledge of Chemische Fabrik and the Subsidiary
Companies, no event has occurred nor has there been any omission which would
result in a material violation of any laws, rulings or regulations applicable
to any employee benefit plan maintained or contributed to by the Subsidiary
Companies for the benefit of their employees and there are no claims pending
or, to the knowledge of Chemische Fabrik and the Subsidiary Companies,
threatened with respect to any of such employee benefit plans, other than
claims for benefits by employees, beneficiaries, or dependents arising in the
normal course of the operation of such plans.  Except as described in SCHEDULE
4.20 annexed hereto, there are no unfunded obligations of the Subsidiary
Companies under any of the employee benefit plans maintained or contributed to
by the Subsidiary Companies.  Except as described in SCHEDULE 4.20 annexed
hereto, the Subsidiary Companies have made all payments and contribution
required to be made by them as of the date of this Agreement for the benefit of
their employee benefit plans to which they are a party or subject.

      *U.ACQUISITION OF SHARES FOR INVESTMENT.

            *1.Chemische Fabrik has sufficient knowledge and experience to be
able to evaluate the risks and merits of its investment in Aceto Shares.

            *2.The Shares are being acquired for Chemische Fabrik's own account
and not with a view to, or the intention of, any distribution thereof in
violation of any applicable laws.

            *3.Chemische Fabrik is not a "U.S. Person" as such term is defined
in Regulation S under the U.S. Securities Act of 1933, as amended.

      *V.NO UNTRUE REPRESENTATION OR WARRANTY. No representation or warranty
made by Chemische Fabrik or its Subsidiary Companies contained in this
Agreement or any attachment, statement, schedule, exhibit, certificate or
instrument furnished or to be furnished to Purchaser by Chemische Fabrik or its
Subsidiary Companies pursuant hereto, or otherwise furnished in writing by
Chemische Fabrik or its Subsidiary Companies in connection with the
transactions contemplated hereby, contains or will contain any untrue statement
of a material fact, or omits or will omit to state any material fact necessary
to make the statements contained herein or therein not misleading.

                   ARTICLE V

REPRESENTATIONS AND WARRANTIES OF PURCHASER AND ACETO

Purchaser and Aceto, jointly and severally, represent and warrant to
Chemische Fabrik and Schweizerhall Holding in connection with the Stock Closing
as follows:

      *A.ORGANIZATION AND GOOD STANDING. Each of Purchaser and Aceto is, or
will be at Closing, a corporation duly organized, validly existing and in good
standing under the laws of its jurisdiction of incorporation and is in good
standing as a foreign corporation in each other jurisdiction where the
properties owned, leased or operated or the business conducted by it requires
such qualification, except where the failure to be so qualified would not have
a Material Adverse Effect.

      *B.CORPORATE AUTHORITY. Each of Purchaser and Aceto has full authority to
execute and to perform this Agreement in accordance with its terms; the
execution and delivery of this Agreement and the consummation of the
transactions contemplated hereby does not and will not result in a breach,
violation or default or give rise to an event which, with the giving of notice
or after the passage of time, would result in a breach, violation or default of
any of the terms or provisions of Purchaser's or Aceto's Certificate of
Incorporation, By-Laws or of any indenture, agreement, judgment, decree or
other instrument or restriction to which Purchaser or Aceto is a party or by
which Purchaser or Aceto or any of their assets may be bound or affected except
for those breaches, violations, or defaults which would not have a Material
Adverse Effect; the execution and delivery of this Agreement have been and, as
of the Closing Date, the consummation of the transactions contemplated hereby
will have been duly authorized, and no authorization or approval, whether of
the stockholders or directors of Purchaser, Aceto or of governmental bodies or
otherwise, will be necessary to enable the Purchaser and Aceto to enter into
and perform same; and this Agreement constitutes a valid and binding obligation
enforceable against Purchaser and Aceto in accordance with its terms.

      *C.ACETO CAPITALIZATION.  The entire authorized capital stock of Aceto
consists of the shares of capital stock set forth on SCHEDULE
5.3 annexed hereto, which Schedule also shows the shares
presently issued and outstanding and the shares of capital stock which are held
in Aceto's treasury. The Aceto Shares have been duly authorized and validly
issued and are fully paid and non-assessable.  In connection with the Stock
Closing, Aceto will at the Closing transfer to Chemische Fabrik or its nominee
good title to 400,000 Aceto Shares, free and clear of any mortgages, liens,
pledges, security interests, charges, restrictions, claims or encumbrances of
any nature.

      *D.COMPLIANCE WITH LAW. Neither Purchaser nor Aceto is in violation in
any material respect of any laws, governmental orders, rules or regulations to
which it or any of its properties or businesses is subject.

      *E.BROKERS. There has been no broker or finder involved in any manner in
the negotiations leading up to this sale and purchase of the Shares or the
consummation of such transactions contemplated hereby, and Purchaser agrees to
indemnify Chemische Fabrik against and hold Chemische Fabrik harmless from any
claim made by any party for a broker's or finder's fee or other similar payment
based upon any agreements, arrangements or understanding made by Purchaser.

      *F.FINANCIAL STATEMENTS. The audited annual financial statements of Aceto
included in the Form 10-K filed by Aceto with respect to the fiscal year ending
June 30, 2000 are true and correct in all material respects.  Such financial
statements have been prepared on a consistent basis in accordance with
generally accepted accounting principles, consistently applied, and fairly
present in all material respects the consolidated financial position and
results of operations of Aceto for the periods covered thereby.  Except as
described on SCHEDULE 5.6 annexed hereto, since June 30,
2000, there have been no material adverse changes in the business or in the
financial condition of Aceto, other than changes in the ordinary course of
business or which in the aggregate would not have a Material Adverse Effect.

      *G.LITIGATION.  Except as set forth on SCHEDULE 5.7,
there are no actions, suits, proceedings or investigations (including any
purportedly on behalf of Purchaser or Aceto) pending, or, to the knowledge of
Purchaser or Aceto, threatened against or affecting the business or properties
of the Purchaser or Aceto, whether at law or in equity or admiralty or before
or by any governmental department, commission, board, agency, court or
instrumentality, domestic or foreign, which if determined adversely to
Purchaser or Aceto, would have a Material Adverse Effect; nor, to the knowledge
of Purchaser or Aceto, is the Purchaser or Aceto operating under, subject to,
in violation in any material respect of or in default in any material respect
with respect to, any judgment, order, writ, injunction or degree of any court
or other governmental department, commission, board, agency or instrumentality,
domestic or foreign, which default or violation would have a Material Adverse
Effect.  Except as set forth on SCHEDULE 5.7, to the
knowledge of Purchaser or Aceto, no written inquiries have been received by
Purchaser or Aceto  from any governmental agency which might form the basis of
any such action, suit, proceeding or investigation.

      *H.NO UNTRUE REPRESENTATION OR WARRANTY.  No representation or warranty
made by Purchaser or Aceto contained in this Agreement or any attachment,
statement, schedule, exhibit, certificate or instrument furnished or to be
furnished to Chemische Fabrik and/or its Subsidiary Companies by Purchaser or
Aceto pursuant hereto, or otherwise furnished in writing by Purchaser in
connection with the transactions contemplated hereby, contains or will contain
any untrue statement of a material fact, or omits or will omit to state any
material fact necessary to make the statements contained herein or therein not
misleading.

      *I.ACQUISITION OF SHARES FOR INVESTMENT.

            *1.Purchaser and Aceto have sufficient knowledge and experience to
be able to evaluate the risks and merits of its investment in the Subsidiary
Companies.

            *2.The Shares are being acquired for the Purchaser's and/or Aceto's
own account and not with a view to, or the intention of, any distribution
thereof in violation of any applicable laws.

                      ARTICLE VI

 COVENANTS REGARDING THE STOCK PURCHASE

      *A.Further Assurances.  Purchaser and Chemische Fabrik agree that, at any
time after the Closing Date, upon the reasonable request of the other, they
will do, execute, acknowledge and deliver, or will cause to be done, executed
acknowledged and delivered, all such further acknowledgments, deeds,
assignments, bills of sale, transfer, conveyances, instruments, consents and
assurances as may reasonably be required for the better assuring and confirming
to Purchaser, its successors and assigns, absolute ownership to the Shares and
assuring and confirming to Chemische Fabrik or its nominee payment of the Stock
Purchase Price and ownership of the 400,000 Aceto Shares and; including,
without limitation, ensuring the registration of the transfer of ownership of
the Shares to Purchaser under the local laws of each jurisdiction under which
the entities who issue the Shares are organized and the registration and
transfer of ownership of the 400,000 Aceto Shares to Chemische Fabrik or its
nominee under the laws of the State of New York.

      *B.COOPERATION.  Purchaser and Chemische Fabrik shall cooperate with each
other fully with respect to actions required or requested to be undertaken with
respect to tax audits, administrative actions or proceedings, litigation and
any other matters that may occur after the Closing Date and each party shall
maintain and make available to the other party upon request all corporate, tax
and other records reasonably required or requested in connection with such
matters.

      *C.ACCOUNTS RECEIVABLE.

            *1.Schweizerhall Holding and Chemische Fabrik, jointly and
severally, hereby irrevocably and unconditionally guarantee the payment within
one hundred and fifty (150) days following the Closing Date of one hundred
percent (100%) of the book value of the accounts receivable of the Subsidiary
Companies as of the Closing Date, to the extent such accounts receivable were
included in the calculation of the Stock Purchase Price, as finally determined
pursuant to Sections 2.2 and 2.4.  If less than one hundred percent (100%) of
the book value of such accounts receivable are collected within that time,
Purchaser shall so notify Schweizerhall Holding and Chemische Fabrik.
Schweizerhall Holding and/or Chemische Fabrik shall then have thirty (30) days
to pay Purchaser in euros an amount equal to the uncollected amount.  If
Schweizerhall Holding and/or Chemische Fabrik does not pay Purchaser this sum
within such thirty (30) day period, the Purchaser shall be entitled and
empowered, in its sole discretion and in accordance with Sections 10.6 and
19.6, to set-off first against the Stock Purchase Note(s) and/or the Asset
Purchase Note and, thereafter Purchaser in its sole discretion, shall have full
recourse to the Aceto Shares held pursuant to the Escrow Agreement with respect
to the guaranty described in this Section 6.3. Promptly following satisfaction
by Schweizerhall Holding and Chemische Fabrik of their guarantee obligations
with respect to any account receivable, Aceto shall cause the appropriate
Subsidiary Company to assign to Chemische Fabrik such account receivable
(together with any returned products relating to such accounts receivable);

            *2.In the event Aceto collects on any or all of the portion of the
allowance for doubtful accounts and bad debt associated with the above accounts
receivables, it shall promptly pay Schweizerhall Holding an amount equal to
fifty percent (50%) of such collected portion.

      *D.DISCLOSURE SCHEDULES.  Concurrently with the execution of this
Agreement, Chemische Fabrik has delivered to Aceto certain of its disclosure
schedules to this Agreement,  or information required thereby, which Aceto and
Purchaser acknowledge is not complete. Prior to the Closing Date and in no
event later than the close of business (New York City time) on February 22,
2001, Chemische Fabrik shall complete and deliver all such Subsidiary Company
disclosure schedules, and provide any supporting documentation which Aceto may
reasonably request and, after receipt of such updated disclosure schedules and
supporting documentation (but no later than the Closing Date) either:

            *1.Purchaser will accept such disclosure schedules in which case
they will become a part of this Agreement;

            *2.Chemische Fabrik and Purchaser will agree upon mutually
acceptable revisions to such disclosure schedules in which case such revised
disclosure schedules will become a part of this Agreement; or

            *3.If the grounds for termination in Section 20.4 are satisfied,
the Purchaser may, at its option terminate this Agreement pursuant to Section
20.4.  If Purchaser decides to elect this option it will endeavor to advise
Chemische Fabrik of same by March 23, 2001.

      *E.DELIVERY OF AUDITED FINANCIAL STATEMENTS.  Schweizerhall Holding and
Chemische Fabrik agree that, on or before March 2, 2001, they will deliver to
Aceto a draft copy of their audited Financial Statements for the Subsidiary
Companies for the year ended December 31, 2000 and that as soon as practicable
thereafter deliver to Aceto final copies of such audited Financial Statements.
If such draft or final Financial Statements reflect any change from the
Unaudited Financial Statements of the Subsidiary Companies for the nine (9)
months ended September 30, 2000, which has a Material Adverse Effect, the
Purchaser or Aceto may, at their option, terminate this Agreement pursuant to
Section 20.4.

      *F.COVENANT TO REGISTER.

            *1.For purposes of this Section, the following definitions shall
apply:

                  *a) The terms "register," "registered," and "registration"
      refer to a registration under the 1933 Act, effected by preparing and
      filing a registration statement or similar document in compliance with
      the 1933 Act, and the declaration or ordering of effectiveness of such
      registration statement, document or amendment thereto.

                  *b) The term "Registrable Securities" means the Aceto Shares
      described in Sections 2.2 (a) and 11.2(a), and any securities of Aceto or
      securities of any successor corporation issued as or issuable upon the
      conversion or exercise of any warrant, right or other security that is
      issued as a dividend or other distribution with respect to, or in
      exchange for, or in replacement of, the Shares.

                  *c) The term "holder of Registrable Securities" means
      Chemische Fabrik and Schweizerhall, Inc. or their nominees.

            *2.Aceto shall prepare and file a registration statement on Form S-
3 within thirty (30) days of the Closing Date.  Aceto may suspend the
effectiveness of any registration effected pursuant to this Subsection (b) in
the event and for such period of time as, such a suspension is required by the
rules and regulations of the Securities and Exchange Commission ("SEC").  Aceto
will use its best efforts to cause such suspension to terminate at the earliest
possible date.

            *3.Whenever required under this Section 6.6 to effect the
registration of any Registrable Securities, Aceto shall, as expeditiously as
reasonably possible:

                  *a) Prepare and file with the SEC a registration statement or
      amendment thereto with respect to such Registrable Securities and keep
      such registration statement effective for so long as any holder of
      Registrable Securities desire to dispose of the securities covered by
      such registration statement; PROVIDED, HOWEVER, that in no event shall
      Aceto be required to keep the Registration statement effective for a
      period greater than three (3) years from the Closing Date;

                  *b) Prepare and file with the SEC such amendments and
      supplements to such registration statement and the prospectus used in
      connection with such registration statement as may be necessary to comply
      with the provisions of the 1933 Act with respect to the disposition of
      all securities covered by such registration statement and notify the
      holders of the filing and effectiveness of such Registration statement
      and any amendments or supplements;

                  *c) Furnish to each holder of Registrable Securities such
      numbers of copies of a current prospectus, including a preliminary
      prospectus, conforming with the requirements of the 1933 Act, copies of
      the registration statement any amendment or supplement to any thereof and
      any documents incorporated by reference therein, and such other documents
      as such holder of Registrable Securities may reasonably require in order
      to facilitate the disposition of Registrable Securities owned by such
      holder of Registrable Securities;

                  *d) Use its best efforts to register and qualify the
      securities covered by such registration statement under such other
      securities or "Blue Sky" laws of such jurisdictions as shall be
      reasonably requested by the holder of Registrable Securities;

                  *e) Notify each holder of Registrable Securities immediately
      of the happening of any event as a result of which the prospectus
      included in such registration statement, as then in effect, includes an
      untrue statement of material fact or omits to state a material fact
      required to be stated therein or necessary to make the statements therein
      not misleading in light of the circumstances then existing, and use its
      best efforts to promptly update and/or correct such prospectus.

            *4.Upon request of Aceto, each holder of Registrable Securities
will furnish to Aceto in connection with any registration under this Section
such information regarding itself, the Registrable Securities and other
securities of Aceto held by it, and the intended method of disposition of such
securities as shall be reasonably required to effect the registration of the
Registrable Securities held by such holder of Registrable Securities.

            *5. INDEMNIFICATION.  Subject to the provisions of Articles X and
XIX and Section 20.7,

                  *a) To the fullest extent permitted by law, Aceto shall
      indemnify, defend and hold harmless each holder of Registrable Securities
      which are included in a registration statement and each of its officers,
      directors, employees, agents, partners or controlling persons (within the
      meaning of the 1933 Act) (each, an "indemnified party") from and against,
      and shall reimburse such indemnified party with respect to, any and all
      claims, suits, demands, causes of action, losses, damages, liabilities,
      costs or expenses ("Liabilities") to which such indemnified party may
      become subject under the 1933 Act or otherwise, arising from or relating
      to (A) any untrue statement or alleged untrue statement of any material
      fact contained in such registration statement, any prospectus contained
      therein or any amendment or supplement thereto, or (B) the omission or
      alleged omission to state therein a material fact required to be
      misleading; PROVIDED, HOWEVER, that Aceto shall not be liable in any such
      case to the extent that any such Liability arises out of or is based upon
      an untrue statement or omission so made in strict conformity with
      information furnished by such indemnified party in writing specifically
      for use in the registration statement.

                  *b) In the event of any registration under the 1933 Act of
      Registrable Securities, each holder of such Registrable Securities hereby
      severally agrees to indemnity, defend and hold harmless Aceto, and its
      officers, directors, employees, agents, partners, or controlling persons
      (within the meaning of the 1933 Act) (each, an "indemnified party") from
      and against, and shall reimburse such indemnified party with respect to,
      any and all Liabilities to which such indemnified party may become
      subject under the 1933 Act or otherwise, arising from or relating to (A)
      any untrue statement or alleged untrue statement of any material fact
      contained in such registration statement, any prospectus contained
      therein or any amendment or supplement thereto, or (B) the omission or
      alleged omission to state therein a material fact required to be stated
      therein or necessary to make the statements therein, in light of the
      circumstances in which they were made, not misleading; PROVIDED, THAT
      such holders will be liable in any such case to the extent and only to
      the extent, that any such Liability arises out of or is based upon an
      untrue statement or alleged untrue statement or omission or alleged
      omission made in such registration statement, prospectus or amendment or
      supplement thereto in reliance upon and in conformity with written
      information furnished by such holder specifically for use in the
      preparation thereof, and such Liability may in no event exceed the value
      of the Registrable Securities so registered.

                  *c) Promptly after receipt by an indemnified party of notice
      of the commencement of any action, such indemnified party shall, if a
      claim in respect thereof is to be made against another party (the
      "indemnifying party") hereunder, notify such party in writing thereof,
      but the omission so to notify such party shall not relieve such party
      from any Liability which it may have to the indemnified party other than
      under this Section and shall only relieve it from any Liability which it
      may have to the indemnified party under this Section if and to the extent
      an indemnifying party is materially prejudiced by such omission.  In case
      any such action shall be brought against any indemnified party and such
      indemnified party shall notify an indemnifying part, and, after notice
      from the indemnifying party shall not be liable to the indemnified party
      under this Section for any legal expenses subsequently incurred by the
      indemnified party in connection with the defense thereof other than
      reasonable costs of investigation and of liaison with counsel so
      selected; PROVIDED, HOWEVER, that if the defendants in any such action
      include both parties and the indemnified party shall have reasonably
      concluded that there may be reasonable defenses available to them which
      are different from or additional to those available to the indemnifying
      party or if the interests of the indemnified party reasonably may be
      deemed to conflict with the interests of the indemnifying party, the
      indemnified party shall have the right to select a separate counsel and
      to assume such legal defenses and otherwise to participate in the defense
      of such action, with the reasonable expenses and fees of one such
      separate counsel and other reasonable expenses related to such
      participation to be reimbursed by the indemnifying party as incurred.

            *6. With respect to the inclusion of Registrable Securities in a
registration statement, all fees, costs and expenses of and incidental to such
registration, inclusion and public offering shall be borne by Aceto; PROVIDED,
HOWEVER, that any security holders participating in such registration shall
bear their pro-rata share of the underwriting discounts and commissions, if
any, incurred by them in connection with such registration.  The fees, costs
and expenses of registration to be borne by Aceto as provided in this
Subsection (f) shall include, without limitation, all registration, filing and
NASD fees, printing expenses, fees and disbursements of counsel and accountants
for Aceto, and all legal fees and disbursements and other expenses of complying
with state securities or Blue Sky laws of any jurisdiction or jurisdictions in
which securities to be offered are to be registered and qualified.  Subject to
appropriate agreements as to confidentiality, Aceto shall make available to the
holders of Registrable Securities and their counsel its documents and personnel
for due diligence purposes, provided that the fees and disbursements of counsel
and accountants for the selling security holders shall be borne by the
respective selling security holders.

                  ARTICLE VII.

 CONDUCT OF BUSINESS OF CHEMISCHE FABRIK'S SUBSIDIARIES
 PENDING THE CLOSING

      *A.Regular Course of Business.  Except as otherwise provided for in this
Agreement, during the period from the date hereof to the Closing Date,
Chemische Fabrik shall cause the Subsidiary Companies to carry on their
business diligently and substantially in the same manner as heretofore
conducted, and shall not institute any new methods of management, accounting or
operation or engage in any transaction or activity, enter into any agreement or
make any commitment, except in the usual and ordinary course of business and
consistent with past practice as limited by the more restrictive provisions of
this Agreement, where applicable, or as otherwise specifically contemplated by
this Agreement and not in violation thereof.   Notwithstanding the foregoing,
it is agreed that on the Closing Date no bills shall be issued by  the
Subsidiary Companies to their customers.

      *B.CERTAIN CHANGES.  During the period from the date hereof to the
Closing Date, without the written consent of Purchaser, except for the payment
of taxes in accordance with Section 7.7 hereof and the
obtaining of insurance in accordance with Section 7.4
hereof, Chemische Fabrik shall cause the Subsidiary Companies not to:

            *1.Pay or incur any obligation or liability, absolute or
contingent, other than current obligations and liabilities incurred in the
ordinary course of business;

            *2.Declare or pay any dividends or make any payment or distribution
to its stockholders, issue any capital stock or purchase or otherwise acquire
for value any of its outstanding capital stock, or grant options, warrants or
rights to purchase any shares of its capital stock;

            *3.Mortgage, pledge or subject to lien or other encumbrance any of
its material properties or assets;

            *4.Sell or transfer any of its properties or assets except in the
ordinary course of business or pursuant to existing contracts or commitments
disclosed to Purchaser, or cancel, release or assign any indebtedness owed to
it or any claims held by it except in the ordinary course of business;

            *5.Make any investment of a capital nature either by the purchase
of stock or securities (other than United States Government securities or money
market investments), contributions to capital, property transfers or otherwise,
or by the purchase of any property or assets of any other individual, firm or
corporation;

            *6.Make any material change in its insurance, advertising,
franchise or sales representations commitments or arrangements, or enter into
(i) any sales agency agreement; (ii)

(any contract for the purchase or sale of any materials, products, or supplies,
the total contract price of which exceeds $50,000 or which contains an
escalator, renegotiation or redetermination clause or which commits it for a
fixed term not terminable on sixty (60) days notice or less; (iii) any
management or consultation agreement; (iv) any lease, license, royalty or union
agreement; or (v) any other agreement, whether or not legally binding, not in
the ordinary course of business;

            *7.Increase in any manner the compensation of any of its officers
or executive employees, or pay or agree to pay any pension or retirement
allowance not required by any existing plan to any of such officers or
employees, or commit itself to any additional pension, retirement, profit
sharing or employee benefit plan or employment agreement with or for the
benefit of any officer, employee or other person; or

            *8.Make any material change in its method of doing business or
standards of evaluating contracts and promissory notes or take any action which
would interfere in any material respect with or prevent performance of this
Agreement.

      *C.CONTRACTS.  During the period from the date hereof to the Closing
Date, Chemische Fabrik shall not permit its Subsidiary Companies to enter into
any contract or commitment, or purchase any supplies or services or sell any
assets, except contracts or commitments for the purchase of, and purchases of,
supplies or services made, in the usual and ordinary course of business,
consistent with the past practice of the Subsidiary Companies and not in
violation of any other more restrictive provision of this Article VII.  In
addition, and not in limitation of the foregoing, Chemische Fabrik shall not
permit it Subsidiary Companies to take any actions to modify or amend any of
the documents comprising assets of such Subsidiary Companies without the
express prior written consent of Purchaser.

      *D.INSURANCE: PROPERTY. During the period from the date hereof to the
Closing Date, the Subsidiary Companies will maintain insurance against all
customary losses with respect to all property, real, personal and mixed, owned
or leased by them; and all such property shall be used, operated, maintained
and repaired in a careful and reasonably efficient manner.

      *E.NO DEFAULT. During the period from the date hereof to the Closing
Date, the Subsidiary Companies shall not do any act or omit to do any act,
which will cause a breach in any material respect of any contract or commitment
of Chemische Fabrik or any of its Subsidiary Companies or which would cause the
breach in any material respect of any representation, warranty or covenant made
hereunder.

      *F.COMPLIANCE WITH LAWS.  Chemische Fabrik will cause the Subsidiary
Companies to comply in all material respects with all laws applicable to them
and their properties, operations, business and employees.

      *G.TAX RETURNS. Chemische Fabrik will cause the Subsidiary Companies to
prepare and file all federal, state, local and foreign tax returns and
amendments thereto required to be filed on or prior to the Closing Date.
Purchaser shall have a reasonable opportunity to review each such return and
amendment prior to the filing thereof.

      *H.CONSENTS AND WAIVERS WITHOUT ANY CONDITION.  Chemische Fabrik shall
not make or permit any of its Subsidiary Companies to make any agreement or
understanding, not earlier approved in writing by Purchaser, as a condition for
obtaining any consent or waiver contemplated by Section 3.2(h) of this
Agreement.

ARTICLE VIII
OTHER AGREEMENTS REGARDING THE STOCK PURCHASE

      *A.INVESTIGATION BY ACETO.  During the period from the date of this
Agreement to and including the date forty-five (45) business days from the date
of this Agreement (but not later than the Closing Date), Chemische Fabrik and
its Subsidiary Companies shall cause Aceto to be given free access at
reasonable times and during normal business hours to the offices, plants,
records, files, stock books, minute books, books of account and copies of tax
returns of the Subsidiary Companies for the purpose of conducting an
investigation of the financial condition, corporate status, liabilities,
contracts, sales, administration, business operations, property and title
thereto, litigation, patents, trademarks, copyrights and all other matters
relating to the business, properties and assets of the Subsidiary Companies,
through Aceto's employees or independent public accountants or outside business
consultants, provided, however, that such investigation shall be conducted in a
manner that does not unreasonably interfere with the normal operations and
employee relationships of the Subsidiary Companies.  At least three (3) days'
notice shall be given of any visit to the premises of the Subsidiary Companies,
and only a reasonable number of persons shall be present and shall be
accompanied by a representative of Chemische Fabrik and the Subsidiary
Companies.  Chemische Fabrik and the Subsidiary Companies shall cause their
personnel to reasonably assist Aceto in making such investigation and shall
cause their counsel, accountants, employees and other representatives to be
reasonably available to Aceto for such purposes.  During such investigation
shall have the right to make copies of such records, files, tax returns and
other materials as it may deem advisable. Should the entities be operated by
prior or other entities within the three years prior to the execution of this
Agreement then Schweizerhall Holding, Chemische Fabrik, and Subsidiary
Companies shall arrange for Aceto's examination of said documents and records
of the prior entity(ies). Aceto shall have the right to query employees,
customers, vendors, suppliers and contractors of the Subsidiary Companies, but
shall be accompanied by a representative of Chemische Fabrik and the Subsidiary
Companies in all such contracts with employees, customers, vendors, suppliers
and contractors.  Upon request Schweizerhall, Chemische Fabrik and the
Subsidiary Companies shall supply three (3) years' records and documents to
Aceto at its offices in New York.  Until the transactions contemplated by this
Agreement are consummated, Purchaser and Aceto and their representatives shall
treat all information obtained in such investigation, and not otherwise known
to Aceto or already in the public domain, as confidential and if such
transactions are not consummated, shall return all copies made by Aceto and its
representatives of material belonging to Chemische Fabrik and its Subsidiary
Companies and shall continue for five (5) years to treat all such confidential
information obtained as confidential.

      *B.FOREIGN COMPLIANCE.  As promptly as practicable after the date of the
execution of this Agreement, Purchaser and Chemische Fabrik and the Subsidiary
Companies shall file notifications under and in accordance with the legal
requirements, if any, of any foreign jurisdictions requiring notification in
connection with the transactions contemplated hereby.  Purchaser and Chemische
Fabrik and its Subsidiary Companies shall respond as promptly as practicable
all inquiries and requests received from any governmental authority (foreign or
domestic) in connection with antitrust matters and shall otherwise use their
reasonable commercial efforts to cause any waiting period thereunder to expire
or be terminated.

      *C.ACCESS TO CERTAIN RECORDS FOLLOWING THE CLOSING.  For a period of five
(5) years after the Closing Date, each Purchaser and its affiliates will
promptly afford to Chemische Fabrik and its representatives and affiliates,
reasonable access during normal business hours to the books, files, records and
tax returns of each Subsidiary Company that relate to the business and
operations of the Subsidiary Companies on and prior to the Closing Date,
including the right to make copies and extracts of such information (at the
expense of the party requesting such information), to the extent that access
may be reasonably required for any reasonable and legitimate business purpose;
provided that any such access by Chemische Fabrik or its representatives or
affiliates shall not unreasonably interfere with the conduct of the business of
the Subsidiary Companies.  Neither any Purchaser nor any Subsidiary Company
shall destroy or dispose of any such books, files, records or tax returns prior
to the expiration of such five (5) year period.  After the expiration of such
five (5) year period, the applicable Purchaser or Subsidiary Company shall
give, prior to destroying or disposing of any such books, files, records or tax
returns, at least sixty (60) days' advance written notice to Schweizerhall
Holding and Chemische Fabrik of the intended destruction or disposition, and
during such sixty (60) day period Schweizerhall Holding, Chemische Fabrik
and/or their affiliates have the right to take possession of the same or to
make copies of the same, all at no expense to any Purchaser or Subsidiary
Company.  Chemische Fabrik and its affiliates will hold in confidence, unless
compelled to disclose by judicial or administrative process or by other
requirements of law, all confidential documents and information provided to
them pursuant to this Section.

      *D.TRANSFER OF LOANS PAYABLE.  Chemische Fabrik and its affiliates will
transfer, assign and convey to Purchaser or its assignee all the
"Besserungsscheine" obligations of SLR Holding Germany to Chemische Fabrik as
set forth on SCHEDULE 8.4 attached hereto and irrevocably agrees to not demand
payment of any such loans payable.

      *E.USE OF SCHWEIZERHALL NAME.  Schweizerhall Holding agrees that the
Subsidiary Companies shall be entitled to use the name "Schweizerhall" in
conjunction with the Aceto name in their respective corporate names for a
transition period of one (1) year following the Closing.  In this regard, the
Subsidiary Companies may refer to themselves during this period as "Aceto
Schweizerhall" or "Schweizerhall Aceto".  At or prior to the expiration of such
year, Aceto shall cause the Subsidiary Companies to change their names to a
name that does not include the word "Schweizerhall."

      *F.ACETO OFFER OF EMPLOYMENT; SEVERANCE.  Aceto shall offer employment
with SLR Holding Germany to three (3) executive level employees of Chemische
Fabrik, at their current salaries and benefits.  The transaction contemplated
herein is not contingent upon any of the three (3) employees agreeing to be
employed after the Closing.

              ARTICLE IX
 CONFIDENTIALITY AND NON-COMPETITION
 REGARDING THE STOCK PURCHASE

      *A.CONFIDENTIALITY.  At all times after the Closing Date, Schweizerhall
Holding and Chemische Fabrik shall retain in strictest confidence, unless
compelled to disclose by judicial or administrative process or by other
requirements of law, and shall not use for their benefit or for the benefit of
others all confidential (i.e. non-public) information comprising or related to
the business of the Subsidiary Companies, including, without limitation, the
technology, know-how, trade secrets, customer lists of the Subsidiary
Companies, the pricing policies, and marketing plans or strategies respecting
the business of the Subsidiary Companies.

      *B.NON-COMPETITION.

            *1.In consideration of the Stock Purchase Price, and for other good
and valuable consideration, the sufficiency of which is hereby acknowledged,
Schweizerhall Holding and Chemische Fabrik agree that for a period of three (3)
years from and after the Closing Date, neither Schweizerhall Holding, Chemische
Fabrik nor any entity in which they shall own a twenty percent (20%) or greater
interest, in (to the extent Schweizerhall Holding or Chemische Fabrik can
exercise control over such entity's business) shall, directly or indirectly,
(i) engage in a business or enterprise (either as proprietor, partner,
employee, agent, consultant, or controlling stockholder) in the business of
trading or supplying a competing product (as defined in subsection (b) below)
or (ii) interfere with, or disrupt or attempt to disrupt the relationship
(contractual or otherwise) between Purchaser and its customers, suppliers,
agents, consultants, officers or employees.

            *2.The phrase "competing product" shall mean any product which is
either an active pharmaceutical ingredient or advanced intermediate ingredient.

            *3.The provisions of this Section 9.2 shall not prevent
Schweizerhall Holding or Chemische Fabrik from investing its assets in
securities of any corporation, or otherwise acquiring any equity interest in
any enterprise, equity securities of which are publicly owned and traded,
provided that such investments or interests shall not result in (i)
Schweizerhall Holding or Chemische Fabrik owning beneficially, in the
aggregate, ten percent (10%) or more of the equity securities of any enterprise
engaged in the business of trading or supplying a competing product  (herein, a
"competing business") or (ii) Schweizerhall Holding or Chemische Fabrik being
able to control or actively participate in the policy decisions of such
competing business.

            *4.The provisions of this Section 9.2 shall also not prevent
Schweizerhall Holding or Chemische Fabrik from: (i)  offering for sale, for
physical delivery within the country of Switzerland only, competing products to
non-affiliated companies; (ii) consolidating or merging with and into
(regardless of which entity survives), or selling all or substantially all of
their assets or shares to, another entity then engaged at the time of such
merger, consolidation or sale in the business of trading or supplying competing
products; (iii) offering for sale any Inventory repurchased from Purchaser
pursuant to Section 2.5 hereof; or (iv) selling products currently produced by
Schweizerhall Manufacturing Company and/or Schweizerhall Development Company at
their manufacturing facilities in Greenville, South Carolina.

            *5.In the event of a breach of Schweizerhall Holding or Chemische
Fabrik of the terms of this Section 9.2, as determined by a final, non-
appealable order of the appropriate deciding body, pursuant to Section 20.7,
the Aceto Shares escrowed pursuant to the Escrow Agreement shall be returned to
Aceto.  Notwithstanding the foregoing, in the event of an inadvertent breach by
Schweizerhall Holding or Chemische Fabrik of the terms of this Section 9.2,
Aceto shall afford Schweizerhall Holding and/or Chemische Fabrik a reasonable
opportunity to cure said inadvertent breach by unwinding any prohibited sale
and/or indemnifying Aceto for any lost profits or other damage sustained by
reason thereof before proceeding against the Aceto Shares escrowed pursuant to
the Escrow Agreement in accordance with the preceding sentence.

            *6.It is the desire and intent of the parties that the provisions
of this Section 9.2, shall be enforced to the fullest extent permissible under
the laws and public policies applied in each jurisdiction in which enforcement
is sought.  If any particular provisions or portion of this Section  9.2 shall
be adjudicated to be invalid or unenforceable in any jurisdiction, this Section
9.2 shall be deemed amended to delete therefrom such provision or portion
adjudicated to be invalid or unenforceable, such amendment to apply only with
respect to the operation of this paragraph in the particular jurisdiction in
which such adjudication is made.  If there is a breach or threatened breach of
the provisions of this Section 9.2, Purchaser shall be entitled to an
injunction restraining Schweizerhall Holding and/or Chemische Fabrik from such
breach.  Nothing herein shall be construed as prohibiting Purchaser from
pursuing any other remedies for such breach or threatened breach.

            *7.The undertakings and covenants of Schweizerhall Holding and
Chemische Fabrik contained in this Section 9.2 are an integral part of the
transactions set forth in this Agreement and the consideration paid by
Purchaser pursuant to this Agreement shall be consideration not only for the
Shares but also for such undertakings and covenants.

              ARTICLE X.

 SURVIVAL OF REPRESENTATIONS AND WARRANTIES;
 INDEMNIFICATION REGARDING THE STOCK PURCHASE

      *A.Survival of Representations and Warranties.

            *1.The representations and warranties of Chemische Fabrik and
Schweizerhall Holding set forth in Section 4.15 (Taxes), any representation and
warranty made in this Agreement, the breach of which constituted fraud on the
part of Chemische Fabrik or Schweizerhall Holding and any covenant or
obligation under this Agreement to be performed after the Closing Date shall
survive and remain in effect following the Closing Date until the expiration of
the applicable statute of limitations relating thereto.  The representations
and warranties of Chemische Fabrik and Schweizerhall Holding set forth in
Section 4.7 shall survive and remain in effect for a period of three (3) years
following the Closing Date.  All other representations and warranties of
Chemische Fabrik and Schweizerhall Holding in this Agreement and any covenant
or obligation to be performed prior to the Closing Date which are intended to
survive the Closing Date shall survive and remain in effect for a period of two
(2) years following the Closing Date unless covered by an insurance policy
extending beyond such two (2) year date, in which case they shall extend until
the expiration of such insurance policy and recovery in that case shall be
limited to the coverage of the policy provided by the insurer.  Except as
provided in Section 10.7 below, the survival of representations and warranties
set forth in this Section 10.1 shall not be affected in any manner by the
Purchaser's exercise of its right to conduct an investigation, including
pursuant to Section 8.1 hereof.

            *2.The representations and warranties of Purchaser and Aceto set
forth in this Agreement and any covenant or obligation of Purchaser or Aceto to
be performed prior to the Closing Date shall survive and remain in effect for a
period of two (2) years following the Closing Date.

      *B.INDEMNITY AGAINST CLAIMS AGAINST PURCHASER. Subject to the limitations
in Section 10.5, Schweizerhall Holding and Chemische Fabrik, jointly and
severally, agree to indemnify and hold Purchaser and Aceto harmless from and
against the following:

            *1.Any and all liabilities, losses, damages, claims, costs and
reasonable expenses suffered by Purchaser or Aceto (whether awarded against
Purchaser or Aceto or paid by Purchaser or Aceto in settlement of a claim as
provided in Section 10.4 or otherwise suffered), resulting from any
misrepresentation, breach of any warranty, or non-fulfillment of any covenant,
condition or agreement on the part of Chemische Fabrik contained in this
Agreement (including, without limitation, the guaranty of the accounts
receivable in Section 6.3) or in any statement, attachment, schedule, exhibit
or certificate furnished or to be furnished by Chemische Fabrik to Purchaser or
Aceto pursuant hereto or in connection with the transactions contemplated
hereby if the written claim for indemnification is made within the survival
period specified in Section 10.1(a);

            *2.Any and all liabilities, losses, damages, claims, costs and
reasonable expenses suffered by Purchaser or Aceto (whether awarded against
Purchaser or Aceto or paid by Purchaser or Aceto in settlement of a claim as
provided in Section 10.4 or otherwise suffered), resulting from any
transaction, matter or thing, happening or occurrence, or directly or
indirectly related to or arising from the transactions contemplated hereby,
occurring prior to the Stock Closing (including any transactions, matters or
thing, happening or occurrence occurring prior to Stock Closing in any
Subsidiary Company) and transfer of the Shares to Purchaser hereunder if the
written claim for indemnification is made within the survival period specified
in Section10.1(a); and

            *3.Any and all actions, suits, proceedings, demands, assessments or
judgments, costs and reasonable expenses (including reasonable attorneys' fees)
incident to any of the foregoing.

      *C.INDEMNITY AGAINST CLAIMS AGAINST SCHWEIZERHALL HOLDING AND CHEMISCHE
FABRIK.  Subject to the limitations in Section 10.5, Purchaser and Aceto,
jointly and severally, agree to indemnify and hold Schweizerhall Holding and
Chemische Fabrik harmless from and against the following:

            *1.Any and all liabilities, losses, damages, claims, costs and
reasonable expenses suffered by Schweizerhall Holding or Chemische Fabrik
(whether awarded against Schweizerhall Holding or Chemische Fabrik or paid by
Schweizerhall Holding or Chemische Fabrik in settlement of a claim as provided
in Section 10.4 or otherwise suffered), resulting from any misrepresentation,
breach of any warranty, or non-fulfillment of any covenant, condition or
agreement on the part of Purchaser or Aceto contained in this Agreement or in
any statement, attachment, schedule, exhibit or certificate furnished or to be
furnished by Purchaser or Aceto to Schweizerhall Holding or Chemische Fabrik
pursuant hereto or in connection with the transactions contemplated hereby if
the written claim for indemnification is made within the survival period
specified in Section 10.1(b);

            *2.Any and all liabilities, losses, damages, claims, costs and
reasonable expenses suffered by Schweizerhall Holding or Chemische Fabrik
(whether awarded against Schweizerhall Holding or Chemische Fabrik or paid by
Schweizerhall Holding or Chemische Fabrik in settlement of a claim as provided
in Section 10.4 or otherwise suffered), resulting from any transaction, matter
or thing, happening or occurrence directly or indirectly related to or arising
from the conduct of the respective businesses of the Subsidiary Companies by
Aceto following the Stock Closing if the written claim for indemnification is
made within the survival period specified in Section 10.1(a); and

            *3.Any and all actions, suits, proceedings, demands, assessments or
judgments, costs and reasonable expenses (including reasonable attorneys' fees)
incident to any of the foregoing.

      *D.NOTICE OF CLAIM, ASSUMPTION OF DEFENSE AND SETTLEMENT OF CLAIMS.

            *1.Any person entitled to indemnification under this Agreement (the
"Indemnitee") shall promptly give notice (an "Indemnification Notice") in
accordance with Section 20.1 hereof to the parties required to provide
indemnification (collectively the "Indemnifying Party") after the Indemnitee
shall have knowledge of any demands, claims, actions or causes of action
(singly, a "Claim" and hereinafter referred to collectively, as "Claims") which
might give rise to a Claim by the Indemnitee against the Indemnifying Party
stating the nature and basis of said Claim and amount thereof, to the extent
known.  A failure to give notice hereunder shall not relieve the Indemnifying
Party from any obligation hereunder unless (x) such failure to give notice
shall materially and adversely affect Indemnifying Party's ability to defend
the Claim; or (y) notice is received after the expiration of the applicable
survival period specified in this Agreement.  Each such Indemnification Notice
shall specify in reasonable detail the nature and amount of the Claim and
shall, to the extent available to the Indemnitee include such supporting
documentation as shall reasonably be necessary to apprise the Indemnifying
Party of the facts giving rise to the Claim.  After the delivery of an
Indemnification Notice certifying that the Indemnitee has incurred or had
asserted against it any liabilities, claims, losses, damages, costs or expenses
for which indemnity may be sought in accordance with the terms of this Article
X (the "Damages"), the Indemnitee shall make a claim in an amount equal to the
incurred Damages or asserted Damages, as the case may be (which, in the case of
any asserted Damages shall include the Indemnitee's reasonably estimated cost
of the defense thereof, hereinafter the "Estimated Defense Costs"), and subject
to the limitations in Section 10.4, the Indemnifying Party shall promptly
reimburse the Indemnitee for the Damages for which the Indemnitee has incurred
and not been indemnified.  In the event the amount of such Damages are not
promptly reimbursed by Indemnifying Party as aforesaid, the amount of such
unreimbursed Damages shall accrue interest at a rate equal to two percent (2%)
above the applicable prime rate of Citibank, N.A.  If the Indemnifying Party is
Schweizerhall Holding or Chemische Fabrik then, if such Indemnifying Party does
not dispute such Claim, such Indemnifying Party may designate whether the
Indemnified Party shall satisfy such Claim from Aceto Shares escrowed pursuant
to the Escrow Agreement or by setoff against the Stock Purchase Note and/or the
Asset Purchase Note pursuant to Section 10.6.

            *2.With respect to any third party Claims made subsequent to the
Closing Date, and prior to the expiration of the applicable survival period,
the following procedures shall be observed:

                  *a) Promptly after delivery of an Indemnification Notice in
      respect of a Claim, the Indemnified Party may elect, by written notice to
      the Indemnitee, to undertake the defense thereof with counsel reasonably
      satisfactory to the Indemnitee and at the sole cost and expense of the
      Indemnifying Party.  In the event the Indemnifying Party elects to assume
      the defense of any such Claim, it shall not, except as provided in
      Section 10.3(b)(ii) be liable to the Indemnitee for any legal fees, costs
      and expenses incurred by the Indemnitee after the date thereof, in
      connection with such defense.  The Indemnitee shall have the right to
      participate in, but not control the conduct of, any such action through
      counsel of its own choosing, at its own expense.

                  *b) Unless and until the Indemnifying Party assumes the
      defense of the third party Claim as provided in Section 10.3(b)(i), or in
      the event the Indemnifying Party ceases to diligently conduct such
      defense, the Indemnified Party may defend against the third party Claim
      in any manner it reasonably may deem appropriate, at the expense of the
      Indemnifying Party.

                  *c) Failure by the Indemnifying Party to notify the
      Indemnitee of its election to defend any such action within forty-five
      (45) days after notice thereof shall have been given, shall be deemed a
      waiver by the Indemnifying Party of its right to defend such action.  If
      the Indemnifying Party assumes the defense of any such Claim, its
      obligations hereunder as to such Claim shall be limited to taking all
      steps necessary in the defense or settlement of such Claim and to holding
      the Indemnitee harmless from and against any and all losses, damages,
      expenses and liabilities awarded in any such proceeding or arising out of
      any settlement approved by the Indemnifying Party or any judgment in
      connection with such Claim.

                  *d) The Indemnifying Party shall not, in the defense of any
      such Claim, consent to the entry of any judgment or enter into any
      settlement with respect to the third party Claim without the prior
      written consent of Indemnitee (which consent shall not be unreasonably
      withheld, conditioned or delayed), except that no consent of the
      Indemnitee shall be required if the judgment or proposed settlement (x)
      involves only the payment of money damages to be paid by the Indemnifying
      Party and does not impose any injunction or other equitable relief upon
      the Indemnitee, (y) includes as an unconditional term thereof a full
      dismissal of the litigation or proceeding with prejudice and the delivery
      by the claimant or plaintiff to the Indemnitee of a release from all
      liability with respect to such claim or litigation, and (z) does not by
      its terms attribute liability to the Indemnitee.

                  *e) In no event will the Indemnitee consent to the entry of
      any judgment or enter into any settlement with respect to the third party
      Claim without the prior written consent of the Indemnifying Party, which
      consent shall not be unreasonably withheld, conditioned or delayed.

                  *f) The Indemnitee will cooperate fully with the Indemnifying
      Party in the conduct of any proceeding as to which the Indemnifying Party
      assumes the defense hereunder.  Such cooperation shall include (a)
      providing the Indemnifying Party and its counsel access to all books and
      records of the Indemnitee or any Subsidiary Company to the extent
      reasonably related to such proceeding, (b) furnishing information about
      the Indemnitee and the Subsidiary Companies to the Indemnifying Party and
      their counsel, (c) making employees available to counsel to the
      Indemnifying Party, and (d) preserving the existence of and maintaining
      all books and records of the Indemnitee or the Subsidiary Companies that
      may reasonably be deemed to be potentially relevant to any such
      proceeding until the proceeding is finally concluded.

      *LIMITATIONS ON LIABILITY, RECOURSE.

            *1.The obligations of the Indemnifying Party with respect to any
indemnifiable Claim are subject to the limitation that an Indemnitee may not
make or bring any claim against an Indemnifying Party in respect of any such
indemnifiable Claim unless the aggregate amount of all indemnifiable Damages
from time to time incurred by all Indemnitees collectively exceeds Twenty Five
Thousand Dollars ($25,000) (the "Threshold").  Once the aggregate amount
exceeds the Threshold, then the aggregate amount of Damages shall be
indemnifiable.

            *2.The amounts for which any Indemnifying Party shall be liable
pursuant to this Article X shall be reduced by the amount of any proceeds
received or receivable by an Indemnitee from any insurance policy covering the
event or events giving rise to such liability or other collateral sources (such
as contractor indemnities of any person outside this Agreement).

            *3.If the Indemnitee receives any payment (including, without
limitation, payment by means of release of escrowed Aceto Shares or by means of
setoff against the Stock Purchase Notes) from an Indemnifying Party in respect
of any Damages pursuant to this Article X and the Indemnitee could have
recovered all or a part of such Damages from a third party based on the
underlying claim asserted against the Indemnifying Party, the Indemnitee shall
assign such of its rights to proceed against that third party as are necessary
to permit the Indemnifying Party to recover from the third party the amount of
such payment.

            *4.Notwithstanding anything in this Agreement to the contrary,
recourse against Schweizerhall Holding and Chemische Fabrik with respect to
their obligations under Section 10.2 (other than any indemnity arising from the
guaranty of the accounts receivable in Section 6.3, Section 4.7 (Environmental
Matters), Section 4.15 (Taxes), Section 3.2(f) (Satisfaction of the Subsidiary
Companies' inter-company, long-term and other debts or fraud, which are
specifically excluded from this Section 10.5) shall be limited to (i) the
200,000 Aceto Shares held in escrow pursuant to the Escrow Agreement, in
accordance with the terms and conditions of the Escrow Agreement; and (ii)
setoff against the Stock Purchase Note and the Asset Purchase Note in
accordance with Section 10.6. Schweizerhall Holding's and Chemische Fabrik's
obligations under Section 10.2 shall be non-recourse against Schweizerhall
Holding and Chemische Fabrik and all of the assets and property of
Schweizerhall Holding and Chemische Fabrik other than the items described in
clauses (i) and (ii) above, and Purchaser agrees to look solely to such items
to satisfy Schweizerhall Holding's and Chemische Fabrik's obligations under
Section 10.2.

            *5.It is further agreed that indemnifiable Claims relating to
Section 4.7 and Section 13.5 shall be limited to $4,000,000.

            *6.Notwithstanding anything in this Agreement to the contrary,
recourse against Purchaser and Aceto with respect to their obligations under
Section 10.3 shall be limited to the market value on the Closing Date of the
200,000 Aceto Shares held in escrow pursuant to the Escrow Agreement plus the
unpaid principal amount of the Stock Purchase Note and the Asset Purchase Note
on the date of the Claim.

      *F.RIGHT TO SET OFF.  Notwithstanding anything to the contrary set forth
in this Agreement or any Exhibit hereto, in the event that the Indemnitee shall
have a Claim against Chemische Fabrik for which it has not been fully and
completely indemnified as contemplated above, the Indemnitee shall have the
right to set off the amount of such Claim against Chemische Fabrik against any
amounts due to Chemische Fabrik or Schweizerhall, Inc. under the Stock Purchase
Note or the Asset Purchase Note; provided, that Indemnitee shall have given
Schweizerhall Holding and Chemische Fabrik notice of such Claim as provided
above and neither Schweizerhall Holding nor Chemische Fabrik has objected in
good faith to such Claim by written notice to the Indemnitee within twenty (20)
days after the Indemnification Notice is received.  If Schweizerhall Holding or
Chemische Fabrik so objects, the applicable Purchaser's obligation to pay the
principal amount of the applicable Note equal to the amount of such Claim and
interest with respect thereto shall be suspended until such objection is
resolved.  If such resolution results in the setoff of less than all of the
alleged Claim, then within ten (10) days after such resolution, the applicable
Purchaser shall pay the balance of such suspended principal amount, together
with interest thereon, to Chemische Fabrik or Schweizerhall, Inc. as the case
may be.

      *G.EFFECT OF CLOSING.  Notwithstanding any provision of this Agreement
which may be to the contrary, (i) Purchaser and Aceto shall not be entitled to
indemnification from Chemische Fabrik or Schweizerhall Holding with respect to
any breach of any representation, warranty or covenant of Chemische Fabrik or
Schweizerhall Holding if the Indemnifying Party can show by a preponderance of
the evidence that the events or conditions constituting or resulting in such
breach were disclosed to Purchaser or Aceto and its counsel in writing at any
time on or prior to the Closing Date, and (b) Chemische Fabrik and
Schweizerhall Holding shall not be entitled to indemnification from Purchaser
or Aceto hereunder with respect to any breach of any representation, warranty
or covenant of Purchaser or Aceto if the Indemnifying Party can show by a
preponderance of the evidence that the events or conditions constituting or
resulting in such breach were disclosed to Chemische Fabrik and its counsel in
writing at any time on or prior to the Closing Date.

             ARTICLE XI

SALE AND PURCHASE OF THE ASSETS;

      .11.1  SALE AND PURCHASE.  Subject to, and only in the event of, the
concurrent acquisition of the Shares from Chemische Fabrik and the terms and
conditions contained herein, Schweizerhall, Inc. hereby agrees to sell,
transfer, assign, convey and deliver to Aceto, and Aceto hereby agrees to
purchase and accept from Schweizerhall, Inc., on the Closing Date, all of
Schweizerhall, Inc.'s right, title and interest in and to the Assets, free and
clear of any liens, pledges, security interests, claims or encumbrances of any
kind.

      .11.2  THE PURCHASE PRICE. The aggregate consideration (the "Asset
Purchase Price") payable to Schweizerhall, Inc. by Aceto for the Assets as
provided herein shall be as follows:

            *1.200,000 Aceto Shares exempt from registration under the
Securities Act of 1933, as amended;

            *2.an amount equal to sixty percent (60%) of the Inventory Value of
Schweizerhall, Inc. on the Closing Date;

            *3.an additional amount equal to the accounts receivable trade net
and commissions receivable of Schweizerhall, Inc. less the accounts payable and
commissions payable of Schweizerhall, Inc. as reflected on the books of
Schweizerhall, Inc. on the Closing Date;

            *4.an additional amount equal to sixty percent (60%) of the cost to
Schweizerhall, Inc. of the goods in transit to Schweizerhall, Inc. as reflected
on the books of Schweizerhall, Inc. on the Closing Date if Schweizerhall, Inc.
paid for such goods in transit prior to the Closing Date, which amount shall be
included in the Inventory Value in the Asset Purchase Note and the Closing Date
Balance Sheet; and

            *5.an additional amount equal to sixty percent (60%) of the cost to
Schweizerhall, Inc. the goods in transit from Schweizerhall, Inc. to its
customers as reflected on the books of Schweizerhall, Inc. on the Closing Date
if the goods in transit have been paid for by Schweizerhall, Inc. and customer
has not yet been billed for such goods, which amount shall be included in the
Inventory Value in the Asset Purchase Note and the Closing Date Balance Sheet.

      (For the purpose of determining the Asset Purchase Price to be paid at
the Closing only, the above Closing Date calculations of the Asset Purchase
Price shall be reasonably estimated  by Schweizerhall, Inc. as of the most
recent date practicable prior to the Closing Date (but no earlier than two (2)
weeks prior to the Closing Date) having been determined pursuant to its review
of the regular books of account of Schweizerhall, Inc. maintained in the
ordinary course of business and prepared in accordance with generally accepted
accounting principles consistently applied. Following the Closing Date the
final Asset Purchase Price shall be determined as provided in Section 11.4.

      (11.3  FORM OF PAYMENT OF THE ASSET PURCHASE PRICE.  The Asset Purchase
Price shall be paid as follows:

      ((a)  200,000 Aceto Shares shall be deposited with the Escrow Agent to be
held for two (2) years from the Closing Date to secure the representations of
Schweizerhall Holding, Chemische Fabrik and Schweizerhall, Inc. in connection
with the sale and purchase of the Shares and in connection with the sale and
purchase of the Assets, pursuant to the terms of the Escrow Agreement.

      ((b)  The Asset Purchase Price attributable to the amount referenced in
Section 11.2(c) above shall be paid in U.S. dollars by bank check, wire
transfer or certified check at Closing.

      ((c)  The balance of the Asset Purchase Price shall be paid with a non-
negotiable unsecured promissory note of Purchaser, in the form attached as
EXHIBIT E hereto for the amount of such balance of the Asset Purchase Price in
U.S Dollars, payable in one (1) year, bearing simple interest at three percent
(3%), with interest to be payable monthly (on the earlier of the last business
day or the 30{th} day of the following month), along with payments of principal
based on the Closing Date Inventory sold during that month (determined on a
FIFO basis). At the time of each such monthly note payment, the applicable
Purchaser shall provide a schedule showing the Closing Date Inventory sold
during the preceding month and the sale price thereof and Schweizerhall Inc.'s
cost thereof.  The outstanding balance, if any, of each said note shall be
payable on the one (1) year anniversary of the Closing Date.  If any particular
type of product is included in the Closing Date Inventory and is also sold by
Aceto or Purchaser, then any sale of such product out of Schweizerhall Inc.
location shall be deemed to have occurred out of the Closing Date Inventory at
such location until all such product in the Closing Date Inventory at such
location is sold, absent clear evidence to the contrary.

      (11.4  PREPARATION OF CLOSING DATE BALANCE SHEET.  As soon as reasonably
practicable after the Closing Date and in any event no later than fourteen (14)
days thereafter, Schweizerhall, Inc. shall prepare and present to Aceto a
balance sheet setting forth in reasonable detail the accounts receivable trade
net, commissions receivable, accounts payable, commissions payable and goods in
transit, in each case as of the Closing Date (the "Closing Date Balance
Sheet"), which shall reflect the amounts carried on the regular books of
account of Schweizerhall, Inc., maintained in the ordinary course of business
and prepared in accordance with its generally accepted accounting principles
consistently applied.  Aceto and its representatives shall have the right to
review the workpapers used in preparing the Closing Date Balance Sheet.

      (The amounts set forth in the Closing Date Balance Sheet shall be binding
on Aceto and Schweizerhall, Inc. for the purposes set forth herein unless Aceto
gives written notice of disagreement with any of the amounts within thirty (30)
days after the receipt by Aceto of the Closing Date Balance Sheet or the last
revision thereof by Schweizerhall, Inc., specifying in reasonable detail,
insofar as possible, the nature and extent of the disagreement.  If Aceto and
Schweizerhall, Inc. are unable to resolve any disagreement within thirty (30)
days after Aceto gives Schweizerhall, Inc. notice thereof, the disagreement
shall be referred for final determination to Price, Waterhouse, Cooper Ltd. or,
if such firm declines to act, to KPMG LLP, or if such firm declines to act, to
any other accounting firm as may be reasonably acceptable to Aceto and
Schweizerhall, Inc..  The determination of the disagreement by the accounting
firm shall be conclusive, non-appealable and binding upon Aceto and
Schweizerhall, Inc. as to the calculation of Inventory Value, accounts
receivable trade net, commissions receivable, accounts payable, commissions
payable and goods in transit; provided, however, that Aceto and Schweizerhall,
Inc. shall retain all of their other rights which arise as a result of this
Agreement.  Aceto and Schweizerhall, Inc. agree that the procedures established
by this Section 11.4 shall constitute the exclusive procedures for calculating
the Inventory Value, accounts receivable trade net, commissions receivable,
accounts payable, commissions payable and goods in transit as of the Closing
Date.

      (Schweizerhall, Inc. and Aceto shall each pay the fees and disbursements
of their respective internal and independent accountants and other personnel
incurred in the initial preparation, review and final determination of the
Closing Date Balance Sheet.  The fees and disbursements of the accounting firm
to which any disagreement is referred pursuant to this Section 11.4 shall be
borne by Schweizerhall, Inc. and Aceto in the proportion determined by such
accounting firm based on the merits of the respective positions taken by
Schweizerhall, Inc. and Aceto with regard to their disagreement.

      (Within ten (10) days after the final determination of the Closing Date
Balance Sheet, an adjustment shall be made to the Asset Purchase Price if the
Closing Date estimates are different than the amounts on the Closing Date
Balance Sheet.  Aceto shall pay Schweizerhall, Inc. on such date additional
cash if such Closing Date calculation of the Asset Purchase Price is less than
the Asset Purchase Price based on the Closing Date Balance Sheet as finally
determined as set forth above.  Schweizerhall, Inc. shall return to Aceto on
such date cash in the amount of the adjustment if such Closing Date calculation
of the Asset Purchase Price is more than the Asset Purchase Price calculated
based on the Closing Date Balance Sheet as finally determined as set forth
above.

     11.5  POSSIBLE ADJUSTMENT OF THE ASSET PURCHASE PRICE. On March 31,
2002, Aceto shall determine the value of the Inventory that was purchased from
Schweizerhall, Inc. and sold by Purchaser during the period beginning on the
Closing Date and ending on March 31, 2002.  Each individual lot of the Closing
Date Inventory sold shall be valued at each location where it is held on a
first-in-first-out (FIFO) basis at the lesser of its cost (I.E., the transfer
price paid by Purchaser) or market (I.E., Purchaser's selling price if the
Closing Date Inventory is sold at less than cost as defined above).   For the
purpose of this possible adjustment, if the total value of the Closing Date
Inventory sold by Purchaser during such period (as determined in accordance
with the preceding sentence) is more than the amount paid by Purchaser for all
of the Closing Date Inventory purchased from Schweizerhall, Inc. on the Closing
Date, Purchaser shall pay to Schweizerhall, Inc., as an adjustment to the Stock
Purchase Price, an amount in euros equal to such excess value within thirty
(30) days after March 31, 2002.  In addition, Schweizerhall, Inc. shall have
the option, exercisable within thirty (30) days after March 31, 2002, to
repurchase the unsold Closing Date Inventory, if any, for One Dollar ($1.00).
Schweizerhall, Inc. shall have a one-time right, directly or through its
authorized agents or auditors, at its own expense, during normal business hours
and upon reasonable notice to examine Aceto accounting records pertinent to the
Inventory sales for the purpose of verifying the amounts due under this
section.

      11.6  ASSUMPTION OF LIABILITIES.  On the Closing Date, Aceto shall
execute and deliver to Schweizerhall, Inc. a Bill of Sale, Assignment and
Assumption Agreement, substantially in the form attached hereto as EXHIBIT F
(the "Bill of Sale and Assumption Agreement"), pursuant to which Aceto shall
assume (a) all trade accounts payable and commissions payable of Schweizerhall,
Inc. incurred in the ordinary course of the conduct of the Pharmaceutical
Ingredients Business prior to the Closing Date, except for trade accounts
payable relating to Excluded Assets and accrued taxes of any kind; (b) all
liabilities and obligations that arise after the Closing Date under the
Contracts assumed by Purchaser; and (c) all liabilities and obligations that
arise or are asserted by reason of events, acts, or transactions relating to
the operation of the Pharmaceutical Ingredients Business by Purchaser arising
from and after the Closing Date.  The liabilities and obligations to be assumed
by Purchaser pursuant to the Bill of Sale and Assumption Agreement are
hereinafter referred to collectively as the "Assumed Liabilities".

ARTICLE XII

CLOSING OF SALE AND PURCHASE OF THE ASSETS; CONDITIONS TO CLOSING; DELIVERIES.

      12.1  CLOSING.  The closing of the sale and purchase of the Assets (the
"Asset Closing") shall be held on the Closing Date at or about 10:00 a.m.,
Eastern Time, at the offices of Aceto Corporation, One Hollow Lane, Lake
Success, New York or at such other time and place upon which the parties shall
agree.

      12.2  CONDITIONS TO ACETO'S OBLIGATION TO PURCHASE THE ASSETS.  Aceto's
obligation hereunder to purchase and pay for the Assets is subject to the
satisfaction, on or before the Closing Date, of the following conditions, any
of which may be waived, in whole or in part, by Aceto in its sole discretion,
and Schweizerhall, Inc. shall use its reasonable commercial efforts to cause
such conditions to be fulfilled:

      (a)  SIMULTANEOUS CLOSING OF SALE AND PURCHASE OF THE SHARES.  The
closing of the sale and purchase of the Shares as provided for in Article III
herein shall occur simultaneously with the Asset Closing.

      (b)  REPRESENTATIONS AND WARRANTIES OF SCHWEIZERHALL, INC. AND
SCHWEIZERHALL HOLDING CORRECT; PERFORMANCE OF COVENANTS; SATISFACTION OF
CONDITIONS.  The representations and warranties of Schweizerhall, Inc. and
Schweizerhall Holding contained in this Agreement (including the Exhibits and
Schedules hereto) and those otherwise made in writing by or on behalf of
Schweizerhall, Inc. and Schweizerhall Holding in connection with the
transactions contemplated by this Agreement shall be true, complete and
accurate in all material respects when made and on and as of the Closing Date
as though such representations and warranties were made at and as of such date
with only such exceptions as would not in the aggregate have a Material Adverse
Effect, and Schweizerhall, Inc. and Schweizerhall Holding shall have delivered
to Aceto a certificate, dated the Closing Date, to such effect.  Schweizerhall,
Inc. shall have duly and properly performed, complied with and observed in all
material respects each of its covenants, agreements and obligations contained
in this Agreement to be performed, complied with and observed on or before the
Closing Date, and Schweizerhall, Inc. shall have delivered to Aceto a
certificate, dated the Closing Date, to such effect.

      (c)  TRANSFER AND ASSIGNMENT PERMITTED BY APPLICABLE LAWS.  The transfer
and assignment of the Assets to Aceto hereunder shall not be prohibited by any
applicable law or governmental regulation and shall not subject Aceto to any
tax, penalty, liability or other onerous condition under or pursuant to any
applicable law or governmental regulation.

      (d)  PROCEEDINGS; RECEIPT OF DOCUMENTS.  All corporate and other
proceedings taken or required to be taken by Schweizerhall, Inc. in connection
with the transactions contemplated hereby and all documents incident thereto
shall have been taken and shall be reasonably satisfactory to Aceto and its
counsel, and Aceto shall have received all such information and such
counterpart originals or certified or other copies of such documents as Aceto
may reasonably request.

      (e)  DELIVERY OF DOCUMENTS.  Schweizerhall, Inc. shall have delivered,
or caused to be delivered, to Aceto the following:

                  *a) the duly executed Bill of Sale and Assumption Agreement
      with respect to the Assets; and

                  *b) all other consents, agreements, schedules, documents,
      financial statements and exhibits required by this Agreement to be
      delivered by Schweizerhall, Inc. at or before the Closing.

            *6.ADVERSE CHANGE.  Except as set forth on SCHEDULE 12.2(F)
attached hereto, since September 30, 2000, and up to the Closing Date,
Schweizerhall, Inc. shall not have suffered any adverse change in its business,
affairs, prospects, financial condition, working capital, assets, liabilities
(absolute, accrued, contingent or otherwise), reserves or operations, which
change has a Material Adverse Effect and Schweizerhall, Inc. shall have
delivered to Aceto a certificate signed by an appropriate officer on behalf of
Schweizerhall, Inc., dated the Closing Date, to such effect.

            *7.NO ADVERSE DECISION.  There shall be no action, suit,
investigation or proceeding pending or threatened by or before any court,
arbitrator, administrative, governmental or non-governmental body or agency
which seeks to restrain, enjoin, prevent the consummation of or otherwise
affect the transactions contemplated by this Agreement, or which otherwise
questions the validity or legality of any such transactions or seeks to recover
damages or to obtain other relief in connection with any such transactions.

            *8.APPROVALS AND CONSENTS.  Schweizerhall, Inc. shall have obtained
all necessary authorizations, consents, rulings, approvals, licenses,
franchises, permits and certificates, or exemptions therefrom, by or of all
third parties, governmental authorities and non-governmental administrative or
regulatory agencies having jurisdiction over the parties hereto, this
Agreement, the Assets, and the transactions contemplated hereby, including,
without limitation, all third parties pursuant to existing agreements or
instruments by which Schweizerhall, Inc. may be bound, which are required for
the execution, delivery and performance of this Agreement and the consummation
of the transactions contemplated hereby, at no cost or other adverse
consequence to Aceto, and all thereof shall be in full force and effect at the
time of Closing. Closing with or without any of the foregoing will satisfy this
condition.

            *9.SUPPORT, CONTRIBUTION OR EXPENSE AGREEMENTS.  All support,
contribution or expense agreements with affiliated parties, including, but not
limited to, any such agreements listed on SCHEDULE 13.17 hereto, to which
Schweizerhall is a party, or a direct or indirect beneficiary, shall have been
terminated, at no cost or expense to Schweizerhall, Inc.

      12.3  CONDITIONS TO SCHWEIZERHALL, INC.'S OBLIGATION TO SELL THE ASSETS.
Schweizerhall, Inc.'s obligation to consummate the transactions contemplated
hereby are subject to the fulfillment of the following conditions on or prior
to the Closing Date, any of which may be waived, in whole or in part, by
Schweizerhall, Inc. in its sole discretion, and Aceto shall use its reasonable
commercial efforts to cause such conditions to be fulfilled.

      (a)  SIMULTANEOUS CLOSING OF SALE AND PURCHASE OF THE SHARES.  The
closing of the sale and purchase of the Shares as provided for in Article III
herein shall occur simultaneously with the Asset Closing.

      (b)  REPRESENTATIONS AND WARRANTIES CORRECT; PERFORMANCE.  The
representations and warranties of Aceto in this Agreement (including the
Exhibits and Schedules hereto) and those otherwise made in writing by or on
behalf of Aceto in connection with the transactions contemplated by this
Agreement shall be true, complete and accurate when made and on and as of the
Closing Date, as though such representations and warranties were made at and as
of such date with only such exceptions as would not in the aggregate have a
Material Adverse Effect, and Aceto shall have delivered to Schweizerhall, Inc.
a certificate, dated the Closing Date, to such effect signed by an appropriate
officer on behalf of Aceto.  Aceto shall have duly and properly performed,
complied with and observed each of its covenants, agreements and obligations
contained in this Agreement to be performed, complied with and observed on or
before the Closing Date, and Aceto shall have delivered to Schweizerhall, Inc.
a certificate, dated the Closing Date, to such effect signed by an appropriate
officer on behalf of Aceto.

      (c)  ACQUISITION PERMITTED BY APPLICABLE LAWS.  The acquisition of the
Assets shall not be prohibited by any applicable law or governmental
regulation.

      (d)  PROCEEDINGS: RECEIPT OF DOCUMENTS.  All corporate and other
proceedings taken or required to be taken by Aceto in connection with the
transactions contemplated hereby and all documents incident thereto shall have
been taken and shall be reasonably satisfactory in form and substance to
Schweizerhall, Inc. and its counsel, and Schweizerhall, Inc. shall have
received all such information and such counterpart originals or certified or
other copies of such documents as they may reasonably request.

      (e)  DELIVERY OF DOCUMENTS.  Aceto shall have delivered, or caused to be
delivered, to Schweizerhall, Inc. the following:

                  *a) the Asset Purchase Note;

                  *b) the Bill of Sale and Assumption Agreement;

                  *c) the 200,000 Aceto Shares, with all documents and
      signatures necessary or appropriate for their transfer to or as directed
      by Schweizerhall, Inc. free and clear of any liens, pledges, security
      interest, claims or encumbrances of any kind, together with any and all
      indicia of ownership of said Shares; and

                  *d) an opinion of counsel to Aceto in form and substance
      reasonably satisfactory to Schweizerhall, Inc.;

      (f)  DELIVERY OF ASSET PURCHASE PRICE.  Aceto shall have delivered the
Asset Purchase Price as hereinabove contemplated.

      (g)  NO ADVERSE DECISION.  There shall be no action, suit, investigation
or proceeding pending or threatened by or before any court, arbitrator,
administrative, governmental or non-governmental body or agency which seeks to
restrain, enjoin, prevent the consummation of or otherwise affect the
transactions contemplated by this Agreement or with respect to any related
transaction, or which otherwise questions the validity or legality of any such
transactions or seeks to recover damages or to obtain other relief in
connection with any such transactions.

      (h)  SECURITIES LAW COMPLIANCE.  All actions and steps necessary to
assure compliance by Aceto with applicable Federal, state and foreign
securities laws in connection with the lawful sale of Aceto Shares pursuant to
this agreement, shall have been duly obtained and shall be effective on or as
of the Closing.


          ARTICLE XIII

REPRESENTATIONS AND WARRANTIES OF SCHWEIZERHALL, INC.
AND SCHWEIZERHALL HOLDING

(Schweizerhall, Inc. and Schweizerhall Holding, jointly and severally,
represent and warrant to Aceto in connection with the Asset Closing as follows:

      (13.1  ORGANIZATION AND GOOD STANDING.  Schweizerhall, Inc. is a
corporation duly organized, validly existing and in good standing under the
laws of the State of New Jersey and has the corporate power and authority to
own or lease its properties and to conduct its business as now conducted in the
places where such properties are now owned or leased or such business is now
conducted.  Schweizerhall, Inc. is duly qualified and in good standing to
conduct business as a  foreign corporation in the jurisdictions specified in
SCHEDULE 13.1 annexed hereto, and these are the only jurisdictions in which
qualification is required, except where the failure to so qualify would have a
Material Adverse Effect.

      (13.2  AUTHORITY.  Schweizerhall, Inc. has the corporate authority to
execute and to perform this Agreement in accordance with its terms; the
execution and delivery of this Agreement and the consummation of the
transactions contemplated hereby does not and will not result in a breach,
violation or default or give rise to an event which, with the giving of notice
or after the passage of time, or both, would result in a breach, violation or
default of any of the terms or provisions of Schweizerhall, Inc.'s Articles of
Incorporation, By-Laws or of any indenture, agreement, judgment, decree or
other instrument or restriction to which Schweizerhall, Inc. is a party or by
which Schweizerhall, Inc. or any of the Assets may be bound or affected except
for those breaches, violations or defaults which would not have a Material
Adverse Effect; the execution and delivery of this Agreement has been and, as
of the Closing Date, the consummation of the transactions contemplated hereby
will have been, duly authorized by all requisite corporate action on the part
of Schweizerhall, Inc. and, as of the Closing Date, no further authorization or
approval will be necessary in order to enable Schweizerhall, Inc. to enter into
and perform the same; and this Agreement constitutes a valid and binding
obligation enforceable against Schweizerhall, Inc. in accordance with its
terms.

      (13.3  TITLE TO ASSETS.  Except as set  forth on SCHEDULE 13.3(A),
Schweizerhall, Inc. has good title to all of the Assets.  Except as described
in SCHEDULE 13.3(A) annexed hereto, none of such Assets, or the use thereof:
(i) is subject to any easements or restrictions or to any mortgages, liens,
pledges, charges, security interests, encumbrances or encroachments, or to any
rights of others of any kind of nature whatsoever, (ii) encroaches or infringes
on the property or rights of another or (iii) contravenes any applicable law or
ordinance or any other administrative regulation or violates any restrictive
covenant or any provision of law.  Except as set forth on SCHEDULE 13.3(B)
attached hereto, there are no agreements or arrangements between Schweizerhall,
Inc. and any third person which have any effect upon Schweizerhall, Inc.'s
title to or other rights respecting the Assets. Schweizerhall, Inc. owns or has
the right to use to the extent necessary for the conduct of its business as now
conducted all of the assets, licenses, franchises, leases or other properties
necessary for conducting its business substantially in the manner in which it
has been conducted in the past and no officer, director or shareholder of
Schweizerhall, Inc., nor any member of any of their families, owns any property
or rights, tangible or intangible, which are used in the business of
Schweizerhall, Inc.

      (13.4  CONDITION OF PROPERTY.  All of the Assets are suitable for the
purposes for which they are used, are in reasonable operating condition, free
from any known defects, except for (i) normal wear and tear and such minor
defects as do not materially interfere with the continued use thereof or (ii)
defects as set forth on SCHEDULE 13.4, annexed hereto.

      (13.5  ENVIRONMENTAL MATTERS.  Except as described in SCHEDULE 13.5(A),
Schweizerhall, Inc. has not, nor to the knowledge of Schweizerhall, Inc., have
any officers, directors, employees or affiliated entities acting on the behalf
of Schweizerhall, Inc., generated, transported, handled, disposed of, or
arranged for the disposal of any Environmentally Sensitive Material, as
hereinafter defined, except in accordance in all material respects with
applicable law.  Except as set forth in SCHEDULE 13.5(B), the activities
described in the previous sentence have not resulted in any material expense to
Schweizerhall, Inc. or any owner of the Assets, arising from any violation or
alleged violation of any Federal, State or local statutes, laws, or ordinances
governing the generation, transportation, handling, disposal or arranging for
the disposal of any Environmentally Sensitive Material on behalf of
Schweizerhall, Inc.  Further, Schweizerhall, Inc. has applied for, and has been
granted, all requisite material permits, licenses, authorizations, and
certifications necessary for the generation, transportation, handling, or
disposal of any Environmentally Sensitive Material necessary for the activities
of Schweizerhall, Inc. and has listed on SCHEDULE 13.5(C) and attached copies
of all Notices of Violation, Letters of Notification, or other enforcement
document or written threat of enforcement issued to Schweizerhall, Inc. by any
agency to Schweizerhall, Inc., either state or Federal charged by law or
regulation with the enforcement of the Federal, State or local statutes, laws,
or ordinances governing environmental or health matters regarding any alleged
violation of any Federal, state or local statutes, laws, or ordinances
governing the generation, transportation, handling, disposal or arranging for
the disposal of any Environmentally Sensitive Material. Since directly or
indirectly owned by Schweizerhall Holding, Schweizerhall, Inc. has not disposed
of any Environmentally Sensitive Material in violation of applicable laws or
regulations. For the purposes of this Section 13.5 "Environmentally Sensitive
Material" shall have the same meaning and shall include the same substances as
are currently described in the definition of Hazardous Substances as defined in
the Comprehensive Environmental Response Compensation and Liability Act, as
amended (CERCLA), 42 U.S.C. <section> 9601 (14), and set out with particularity
in 40 C.F.R. <section> 302.4, the definition of Hazardous Waste as defined in
RCRA 42 U.S.C. <section> 6901, ET.SEQ. and which is further defined in 40
C.F.R. <section> 261.21 - 261.24 (as to hazardous by characteristic), 40
C.F.R. <section><section> 261-31 - 261.33 (as to listed wastes), or the
definition of Hazardous Waste or Constituents in App. VIII to 40 C.F.R. Part
261 and shall also include any other substance, material or waste designated as
"hazardous" for purposes of regulating or imposing liability or standards of
conduct concerning the generation, transportation, disposal or arranging for
the disposal of such substance, material or waste under other Federal, State or
local statutes, laws, ordinances, codes or regulations currently in force.

      (13.6  PATENTS, TRADEMARKS, ETC.  Schweizerhall, Inc. owns the respective
patents, trademarks, copyrights and trade names and applications and
registrations therefor as listed in SCHEDULE 13.6 annexed hereto, and except as
stated in such schedule has not granted and prior to the Closing Date will not
grant any licenses to use such patents, trademarks, copyrights or trade names.
No other patents, trademarks, copyrights or trade names are owned by
Schweizerhall, Inc.  There are no patents, trademarks, trade names, copyrights,
technology or know-how and processes with respect to which Schweizerhall, Inc.
requires a grant of right and which are used in or necessary for the conduct of
its business as heretofore conducted.  No claims have been asserted in writing
and no claims are pending or, to the knowledge of Schweizerhall, Inc.,
threatened, except as described in SCHEDULE 13.6 annexed hereto, by any person
to the use of any of the patents, trademarks, copyrights or trade names or
applications therefore owned by Schweizerhall, Inc. do not know of any valid
basis for any such claim, and the use of such patents, trademarks, copyrights
or trade names by Schweizerhall, Inc. does not infringe on the rights of any
person.  To the best of Schweizerhall, Inc.'s knowledge, there are no material
infringements of any of Schweizerhall, Inc.'s patents, trademarks, copyrights,
trade names or trade secrets.

      (13.7  DRUG MASTER FILES AND DOSSIERS.  Schweizerhall, Inc. owns the Drug
Master Files and Dossiers as listed in SCHEDULE 13.7 annexed hereto.

      (13.8  COMPLIANCE WITH LAW.  Except as described in SCHEDULE 13.8 annexed
hereto, Schweizerhall, Inc. has conducted its business operations since their
acquisition by Schweizerhall Holding operations in accordance with all
applicable laws and regulations, in all material respects, and is not in
violation in any material respect of any laws, governmental orders, rules,
regulations or ordinances to which any of its property, real, personal, mixed,
tangible or intangible, including the Assets, or Schweizerhall, Inc.'s business
related to such properties, are subject. Schweizerhall, Inc. has all permits,
licenses, orders or approvals of any federal, state, local or foreign
governmental or regulatory body required in order to permit it to carry on its
business as presently conducted.  All such permits licenses, orders and
approvals are in full force and effect to the knowledge of Schweizerhall, Inc.
and no suspension or cancellation of any of them is threatened.  Except as
described in SCHEDULE 13.8, Schweizerhall, Inc.  has no knowledge of any
violation of law by Schweizerhall, Inc. and is not in receipt of any written
notice of claim of any violation or alleged violation of any such law or
regulation.  Schweizerhall, Inc. has no actual knowledge of any pending or
threatened change in any law or regulation which, if enacted, would materially
impair the business or assets of Schweizerhall, Inc.

      (13.9  AGREEMENTS.  SCHEDULE13.9(A) is a true and complete list of all no
material contracts, instruments, commitments or agreements, whether oral or
written, presently in effect to which Schweizerhall, Inc. is a party or to
which Schweizerhall, Inc. or any of its properties is subject, including,
without limitation, the following:

      ((a)  any plan or contract or arrangement in excess of $100,000, oral or
written, providing for employment or consulting services, bonuses, commissions,
pensions, stock purchase or stock option or other stock rights, deferred
compensation, retirement or severance payments, profit sharing, or the like;

      ((b)  any instrument or arrangement in excess of $100,000 evidencing or
relating in any way to (i) indebtedness for borrowed money by way of direct
loan, purchase money obligation, conditional sale, lease purchase arrangement,
guarantee or otherwise, (ii) liens, encumbrances or security interests, (iii)
guaranties or indemnification or (iv) investments in any person;

      ((c)  any contract containing provisions limiting the freedom of
Schweizerhall, Inc. to engage in any business or compete in any line of
business or in any geographic area or with any person except for those
limitations which would not have a Material Adverse Effect;

      ((d)  any contract in excess of $100,000 for the purchase or sale of any
materials, products or supplies which contains any escalator, renegotiation or
redetermination clause or which commits it for a fixed term not subject to
termination on notice of sixty (60) days or less;

      ((e)  any contract, accepted order or commitment for the purchase or sale
of materials, products or supplies having a total contract price in excess of
$100,000;

      ((f)  any license, sublicense, royalty, lease or sublease agreement in
excess of $100,000, whether as licensor, sublicensor, licensee, sublicensee,
lessor, sublessor, lessee, sublessee or otherwise, or any agreements with
dealers, vendors, customers, suppliers, sales representatives, any governmental
entity, fund or university, or any agents, marketing representatives, brokers
or distributors;

      ((g)  any joint venture contract or arrangement or other agreement in
excess of $100,000 involving a sharing of profits or expenses or any joint or
other technology development cooperation or exchange contract or agreement in
excess of $100,000; or

      ((h)  agreements providing for disposition of the business or any assets
in excess of $100,000 or shares of the capital stock of Schweizerhall, Inc.;
agreements of merger or consolidation to which Schweizerhall, Inc. is a party;
or any confidentiality agreements or letters of intent with respect to the
foregoing; and

      ((i)  contracts in excess of $100,000 requiring the performance of
consulting services or other services.

     Each such agreement is a valid and subsisting agreement and in full force
and effect, all payments due from Schweizerhall, Inc. thereunder have been
made, there are no disputes or suits or actions at law or otherwise pending or,
to the knowledge of Schweizerhall, Inc., threatened thereunder and such
agreements are the only agreements or arrangements of this nature.  True,
complete, and correct copies of each such agreement will be supplied to Aceto
on or before the close of business (New York City time) on February 22, 2001.
Except as described in SCHEDULE 13.9(B), Schweizerhall, Inc. and/or the Assets
are not subject to any material contract, instrument, commitment or agreement,
whether oral or written, presently in effect, which is subject to cancellation,
termination, forfeiture or renegotiation upon sale of the Assets to Aceto.
Schweizerhall, Inc. has no outstanding contracts or accepted orders at less
than the contract price customary on its part involving $100,000 in aggregate.
Schweizerhall, Inc. has no outstanding contracts or accepted orders for the
purchase of materials, products or supplies by it at more than the contract
price customary on its part involving $100,000 in aggregate.

      (13.10  FINANCIAL STATEMENTS.

      ((a)  Attached hereto as SCHEDULE 13.1(A) is a true and correct copy of
the Financial Statements of Schweizerhall, Inc. except that the audited
Financial Statements for the year ended December 31, 2000 shall be delivered to
Aceto and attached to this Agreement once such statements have been completed,
which, in any event, shall be ten (10) business days prior to the Closing Date.
The Financial Statements (which include the to-be-prepared audited Financial
Statements for the year ended December 31, 2000) have been prepared on a
consistent basis in accordance with generally accepted accounting principles,
consistently applied, and fairly present in all material respects the financial
position of Schweizerhall, Inc. the periods covered thereby.  The books and
records maintained by Schweizerhall, Inc. upon which the Financial Statements
are based are true and correct in all material respects and accurately reflect
the business operations of Schweizerhall, Inc.  Except to the extent reflected
or reserved against in the Balance Sheet, or as set forth on SCHEDULE 13.1(B),
or executory obligations under agreements or instruments to which a Subsidiary
Company may be party, or liabilities or obligations incurred in the ordinary
course of business since the Balance Sheet Date, Schweizerhall, Inc. has no
material liability of any nature, whether absolute, accrued, contingent or
otherwise and whether due or to become due, including, without limitation, any
liability for taxes for any period prior to such date.  Except as described on
SCHEDULE 13.1(C) since September 30, 2000, Schweizerhall, Inc. has not taken
any of the actions not permitted to be taken by Article XVII of this Agreement.

      ((b)  Attached hereto as SCHEDULE 13.1(D) is a balance sheet of
Schweizerhall, Inc. as at September 30, 2000 and an income statement of
prepared on an accrual basis for the nine (9) months ended September 30, 2000
(the "Unaudited Financial Statements").  The Unaudited Financial Statements
have been prepared on a consistent basis in accordance with generally accepted
accounting principles, consistently applied, and fairly present the financial
position and results of operating of Schweizerhall, Inc. for the periods
covered thereby.

      ((c)  All accounts receivable shown or to be shown on the September 30,
2000, December 31, 2000 and Closing Date balance sheets constitute BONA FIDE
accounts receivable arising in the ordinary course of Schweizerhall, Inc.'s
business; and are subject to no known conditions to payment and no known
offsets, counterclaims, defenses of any kind, returns (including, without
limitation, distributor's rights to return products from inventory), allowances
or credits, other than any allowance for doubtful accounts shown thereon, and
to no material known warranty claims.  Except as described in SCHEDULE 13.1(E),
there are no account debtors or note debtors (x) delinquent in payment by more
than ninety (90) days or (y) who have refused or, to the knowledge of
Schweizerhall, Inc., threatened to refuse to make payment.

      ((d)  The business of Schweizerhall, Inc. related to its Greenville, S.C.
operations are or on the Closing Date will be conducted solely through its
subsidiaries, Schweizerhall Manufacturing Company and Schweizerhall Development
Company.

      (13.11  LITIGATION.  Except as set forth and described in detail on
SCHEDULE 13.11, there are no actions, suits, proceedings or investigations
(including any purportedly on behalf of Schweizerhall, Inc.) pending or, to the
best knowledge of Schweizerhall, Inc., threatened against or affecting the
business or properties, real, personal, mixed, tangible or intangible, of
Schweizerhall, Inc. whether at law or in equity or admiralty or before or by
any governmental department, commission, board, agency, court or
instrumentality, domestic or foreign; nor is Schweizerhall, Inc. operating
under, subject to, in violation of or in default with respect to, any judgment,
order, writ, injunction or degree of any court or other governmental
department, commission, board, agency or instrumentality, domestic or foreign.
Except as set forth and described in detail on SCHEDULE 13.11, no filings have
been made by any present or former employee of Schweizerhall, Inc. with the
Equal Employment Opportunity Commission, State Labor Commission, or any other
governmental agency or organization, asserting any claim based on alleged race,
gender (including, without limitation, sexual harassment), age or other type of
discrimination on the part of Schweizerhall, Inc.

      (13.12  VALIDITY OF ASSIGNMENT.  Except as set forth on SCHEDULE 13.12,
Schweizerhall, Inc.'s rights and obligations under all agreements to be
assigned hereby to Aceto by reason of the transfer and assignment of the Assets
are assignable as contemplated by this Agreement and will be duly validly
assigned to Purchaser on the Closing Date; such assignment will not give rise
to the ability of any other party to such agreements to terminate such
agreements or to otherwise modify the rights and obligations thereunder; and,
such assignments will not result in any liability being imposed on Aceto other
than to perform such agreements in the future in accordance with their terms.

      (13.13  SALARIES.  SCHEDULE  13.13 annexed hereto, sets forth a true and
complete list, as of the date of this Agreement, of all of the persons who are
employed by Schweizerhall, Inc., together with their current compensation,
fringe benefits and bonuses paid or to be paid or the methods of computing such
compensation and bonuses, for the current fiscal year.

      (13.14  TAXES.  Schweizerhall, Inc. has filed, or caused to be filed,
with all appropriate governmental agencies all required tax and information
returns and have paid, caused to be paid or accrued all taxes (including,
without limitation, all income, franchise, sales, excise and use taxes),
assessments, charges, penalties and interest shown to be due and payable,
except as set forth on SCHEDULE 13.14 annexed hereto with respect to taxes
being contested in good faith.  Except as set forth on SCHEDULE 13.14 annexed
hereto, Schweizerhall, Inc. has no liability, contingent or otherwise, for any
taxes, assessments, charges, penalties or interest, other than amounts
adequately reserved for.  Schweizerhall, Inc. has not received directly or
indirectly notice of, nor is it otherwise aware of an audit or examination; nor
is Schweizerhall, Inc. a party directly or indirectly to any action or
proceeding by any governmental authority for assessment or collection of taxes,
charges, penalties or interest; nor has any claim for assessment and collection
been asserted against Schweizerhall, Inc. directly or indirectly; nor has
Schweizerhall, Inc. executed a waiver of any statute of limitations with
respect thereto.  Schweizerhall, Inc. has paid, or caused to be paid, or
adequately reserved for, all applicable corporate franchise taxes, unemployment
taxes, payroll taxes, social security taxes, ad valorem taxes, property taxes,
excise taxes and imposts, sales and use taxes, and all other taxes of every
kind, character or description required to be paid to the date hereof, and has
received no notices and is not otherwise aware, of any deficiencies,
adjustments or changes in assessments with respect to any such taxes.
Schweizerhall, Inc. has duly filed, or caused to be filed, all reports or
returns relating to or covering any such taxes or other charges which are due
or required to be filed at the date hereof and no extensions of time are in
effect for the assessment of deficiencies for such taxes in respect of any
fiscal period.

      (13.15  ABSENCE OF CHANGES.  Except as set forth on SCHEDULE 13.15
attached hereto, since September 30, 2000, Schweizerhall, Inc.'s business has
been operated in the ordinary course and there has been no change since that
date in the financial condition or in the business or properties of
Schweizerhall which would have a Material Adverse Effect, and there has not
been:

      ((a)  any dispute or difficulty with its labor relations adversely
affecting the Pharmaceutical Ingredients Business;

      ((b)  any license, sale, transfer, pledge, lien, security interest,
mortgage or other disposition of any tangible or intangible property of the
Pharmaceutical Ingredients Business with al book value of more than $100,000;

      ((c)  any change in the accounting methods or practices followed by
Schweizerhall, Inc., in depreciation or amortization policies or rates
theretofore adopted by Schweizerhall, Inc.;

      ((d)  any single capital expenditure or commitment therefor by
Schweizerhall, Inc. in excess of $100,000, or such capital expenditures in the
aggregate in excess of $100,000, for additions to property, plant or equipment
of the Pharmaceutical Ingredients Business;

      ((e)  any material changes in the manner in which Schweizerhall, Inc.
extends discounts or credits or otherwise deals with customers, vendors,
suppliers, distributors or sales representatives;

      ((f)  any agreement or commitment relating to the sale by Schweizerhall,
Inc. of any fixed assets with a book value of more than $100,000;

      ((g)  any outstanding contract or commitment which will result in any
loss in excess of $100,000 to Schweizerhall, Inc. upon completion of
performance thereof;

      ((h)  any grant by Schweizerhall, Inc. of any power of attorney (whether
revocable or irrevocable) to any person that is or may hereafter be in force
for any purpose whatsoever;

      ((i)  the creation of any lien of record or guarantee or any investment
of any person in excess of $100,000;

      ((j)  any steps taken that have, or are likely to result in, any Material
Adverse Effect in the assets, liabilities, business or goodwill of
Schweizerhall, Inc.; or

      ((k)  any commitment to do any of the acts or things specified in items
(a) though (j) of this Section 13.15.

      (13.16  INSURANCE.  Schweizerhall, Inc. maintains insurance against all
customary losses. SCHEDULE 13.16 annexed hereto, contains a complete list of
all policies of insurance held by Schweizerhall, Inc., showing for each policy
(i) the owner, (ii) the coverage, (iii) the amount of premium properly
allocable thereto, (iv) the name of the insurer, (v) the termination date of
the policy and (vi) all claims made thereunder.  All such policies are in full
force and effect, all premiums with respect thereto covering all periods up to
and including the Closing Date have been paid, and no notice of cancellation or
termination has been received with respect to any such policy. Schweizerhall,
Inc. has not failed to give any material notice or present any claim thereunder
in a due and timely fashion.

      (13.17  TRANSACTIONS WITH AFFILIATES.  Except as described in SCHEDULE
13.17  annexed hereto, there are no loans, leases, royalty agreements,
employment contracts, service agreements, finance agreements, purchase
agreements, sale agreements, brokering agreements, jobbing agreements,
consulting agreements, agency agreements, distribution agreements, development
agreements, independent agreements, joint venture agreements, partnership
agreements, support or contribution agreements, expense allocation agreements
or any other agreement or arrangement, oral or written, between Schweizerhall,
Inc., on the one hand, and Schweizerhall Holding, Chemische Fabrik, the
Subsidiary Companies or any affiliates, subsidiaries, parent companies, past or
present principal stockholders, officer, employee, consultant or director of
Schweizerhall, Inc., Schweizerhall Holding, Chemische Fabrik or Subsidiary
Companies (or any member of the immediate family of such stockholders, officer,
employee, consultant or director), on the other hand.

      (13.18  ERISA.  Schweizerhall, Inc. has neither maintained, established
nor made contributions to any Employee Benefit Plan (as such term is defined in
Section 3(3) of the Employee Retirement Income Security Act of 1974, as amended
("ERISA")).

      (13.19  BROKERS.  There has been no broker or finder representing
Schweizerhall, Inc. involved in any manner in the negotiations leading up to
this sale and purchase of the Assets or the consummation of such transaction
contemplated hereby and Schweizerhall, Inc. agrees to indemnify Aceto against
and hold Aceto harmless from any claim made by any party for a broker's or
finder's fee or other similar payment based upon any agreements, arrangements
or understanding made by Schweizerhall, Inc.

      (13.20  ACQUISITION OF SHARES FOR INVESTMENT.

      ((a)  Schweizerhall, Inc. has sufficient knowledge and experience to be
able to evaluate the risk and merits of its investment in the Aceto Shares.

      ((b)  The Shares being acquired for Schweizerhall, Inc.'s own account and
not with a view to, or the intention of, any distribution thereof in violation
of any applicable laws.

      ((c)  Schweizerhall, Inc. is an "accredited investor" as such term is
defined under the U.S. Securities Act of 1933, as amended.

      (13.21  NO UNTRUE REPRESENTATION OR WARRANTY.  No representation or
warranty contained in this Agreement or any attachment, statement, schedule,
exhibit, certificate or instrument furnished or to be furnished to Aceto by or
on behalf of Schweizerhall Inc. and/or Schweizerhall Holding pursuant hereto,
or in connection with the transactions contemplated hereby or in connection
therewith, contains any untrue statement of a material fact, or omits to state
any material fact necessary to make the statements contained herein or therein
not misleading.

    ARTICLE XIV

REPRESENTATIONS AND WARRANTIES OF ACETO

     Aceto represents and warrants to Schweizerhall, Inc. in connection with
the Asset Closing as follows:

      (14.1  ORGANIZATION AND GOOD STANDING.  Aceto is a corporation duly
organized, validly existing and in good standing under the laws of the State of
New York.

      (14.2  AUTHORITY.  Aceto has full authority to execute and to perform
this Agreement in accordance with its terms; the execution and delivery of this
Agreement and the consummation of the transactions contemplated hereby does not
and will not result in a breach, violation or default or give rise to an event
which, with the giving of notice or after the passage of time, or both, would
result in a breach, violation or default of any of the terms or provisions of
Aceto's Articles of Incorporation, By-Laws or of any indenture, agreement,
judgment, decree or other instrument or restriction to which Aceto is a party
or by which Aceto may be bound or affected; the execution and delivery of this
Agreement and the consummation of the transactions contemplated hereby have
been duly authorized by all requisite corporate action on the part of Aceto and
no further authorization or approval, whether of the stockholders or directors
of Aceto or governmental bodies or otherwise, is necessary in order to enable
Aceto to enter into and perform the same; and this Agreement constitutes a
valid and binding obligation enforceable against Aceto in accordance with its
terms.

      (14.3  BROKERS.  There has been no broker or finder involved in any
manner in the negotiations leading up to this sale and purchase of the Assets
or the consummation of such transaction contemplated hereby and Aceto agrees to
indemnify Schweizerhall, Inc. against and hold Schweizerhall, Inc. harmless
from any claim made by any party for a broker's or finder's fee or other
similar payment based upon any other agreements, arrangements or understanding
made by Aceto.

      (14.4  NO UNTRUE REPRESENTATION OR WARRANTY.  No representation or
warranty contained in this Agreement or any attachment, statement, schedule,
exhibit, certificate or instrument furnished or to be furnished to
Schweizerhall, Inc. by Aceto pursuant hereto, or in connection with the
transactions contemplated hereby, contains any untrue statement of a material
fact, or omits to state any material fact necessary to make the statements
contained herein or therein not misleading.

ARTICLE XV

COVENANTS REGARDING THE ASSET PURCHASE

      (15.1  DELIVERY OF ASSETS.  On the Closing Date of this Agreement,
Schweizerhall, Inc. shall deliver the Assets to Aceto, together with copies of
all other business records and agreements of Schweizerhall, Inc. relating to
the Assets.

      (15.2  ASSIGNMENT OF CONTRACTS AND RIGHTS.  Schweizerhall, Inc. will use
its best efforts to obtain all consents and approvals required under any
contract to which Schweizerhall, Inc. is a party or by which Schweizerhall,
Inc. is bound to enable Schweizerhall, Inc. to effect the transfer of the
Assets pursuant hereto.  Anything in this Agreement to the contrary
notwithstanding, this Agreement shall not constitute an agreement to assign any
contract, or any claim or right or any benefit arising thereunder or resulting
therefrom, if an attempted assignment thereof, without the consent of a third
party thereto, would constitute a breach thereof or in any way affect the
rights of Aceto or Schweizerhall, Inc. thereunder.  If such consent is not
obtained, or if an attempted assignment thereof would be ineffective or would
affect the rights of Schweizerhall, Inc. thereunder so that Aceto would not in
fact receive all such rights, Schweizerhall, Inc. will cooperate with Aceto in
any reasonable arrangement designed to provide for Aceto the benefits under any
of such contracts, including, without limitation, enforcement for the benefit
of Aceto of any and all rights of Schweizerhall, Inc. against a third party
thereto arising out of the breach or cancellation by such third party or
otherwise; and any transfer or assignment to Aceto by Schweizerhall, Inc. of
any contract which shall require the consent or approval of any third party,
shall be made subject to such consent or approval being obtained.

      (15.3  FURTHER ASSURANCES.  Schweizerhall, Inc. agrees that, at any time
after the Closing Date, upon reasonable request of Aceto, it will do, execute,
acknowledge and deliver, or will cause to be done, executed, acknowledged and
delivered, all such further acknowledgments, deeds, assignments, bills of sale,
transfers, conveyances, instruments, consents and assurances as may reasonably
be required for the better assigning, transferring, granting, conveying,
assuring and confirming to Aceto, its successors and assigns, the Assets to be
transferred to Aceto as provided herein.

      (15.4  COMPLIANCE WITH TAX NOTICE, SALES AND USE TAXES.  Aceto shall
comply with the notice requirement of N.J.S.A. 54:32 B-22(c).  Schweizerhall,
Inc. shall pay all sales, transfer and use taxes arising out of the transfer of
the Assets.

      (15.5  ACCOUNTS RECEIVABLE.

      ((a)  Schweizerhall Holding hereby irrevocably and unconditionally
guarantees the collection within one hundred and fifty (150) days following the
Closing Date of one hundred percent (100%) of the book value of the accounts
receivable of Schweizerhall, Inc. as of the Closing Date, to the extent such
accounts receivable were included in the definition of Asset Purchase Price, as
finally determined pursuant to Sections 11.2 and 11.4.  If less than one
hundred percent (100%) of the book value of such accounts receivable are
collected within that time, Aceto shall so notify Schweizerhall Holding.
Schweizerhall Holding and/or Schweizerhall, Inc. shall then have thirty (30)
days to pay Aceto in U.S. dollars an amount equal to the uncollected amount.
If Schweizerhall Holding and/or Schweizerhall, Inc. does not pay Purchaser this
sum within such thirty (30) day period, Aceto shall be entitled and empowered,
in its sole discretion and in accordance with Sections 10.6 and 19.6, to set-
off first against the Stock Purchase Note(s) and/or the Asset Purchase Note and
thereafter, Aceto in its sole discretion shall have full recourse to the Aceto
Shares held pursuant to the Escrow Agreement with respect to the guaranty
described in this Section 15.5. Promptly following satisfaction by
Schweizerhall Holding and Schweizerhall, Inc. of their guarantee obligations
with respect to any account receivable, Aceto shall assign to Schweizerhall,
Inc. such account receivable (together with any returned products relating to
such accounts receivable).

      ((b)  In the event Aceto collects on any or all of the portion of the
allowances for doubtful accounts and bad debt associated with the above
accounts receivable, it shall pay Schweizerhall Holding an amount equal to
fifty percent (50%) of such collected portion.

      (15.6  DISCLOSURE SCHEDULES.  Concurrently with the execution of this
Agreement, Schweizerhall, Inc. has delivered to Aceto certain of its disclosure
schedules to this Agreement, or information required thereby, which Aceto
acknowledges is not complete.  Prior to the Closing Date and in no event later
than the close of business (New York City time) on February 22, 2001,
Schweizerhall, Inc. shall complete and deliver all such Schweizerhall, Inc.
disclosure schedules, and provide any supporting documentation which Aceto may
reasonably request and, after receipt of such updated disclosure schedules and
supporting documentation (but no later than the Closing Date) either:

      ((a)  Aceto will accept such disclosure schedules in which case they will
become a part of this Agreement;

      ((b)  Schweizerhall, Inc. and Aceto will agree upon mutually acceptable
revisions to such disclosure schedules in which case such revised disclosure
schedules will become a part of this Agreement; or

      ((c)  If the grounds for termination in Section 20.4 are satisfied, Aceto
may, at its option terminate this Agreement pursuant to Section 20.4.  If Aceto
decides to elect this option, it will endeavor to advise Schweizerhall, Inc. of
same by March 21, 2001.

      (15.7  DELIVERY OF FINANCIAL STATEMENTS.  Schweizerhall, Inc. agrees
that, on or before February 15, 2001, it will deliver to Aceto a draft copy of
their audited Financial Statements for the year ended December 31, 2000, and
that as soon as practicable thereafter deliver to Aceto final copies of such
audited Financial Statements.  If such draft or final Financial Statements
reflect any change from the Unaudited Financial Statements of Schweizerhall,
Inc. for the nine (9) months ended September 30, 2000, which has a Material
Adverse Effect, Aceto may, at its option, terminate this Agreement pursuant to
Section 20.4.

ARTICLE XVI

CONDUCT OF BUSINESS OF SCHWEIZERHALL, INC. PENDING THE CLOSING

     Between the date hereof and the Closing, and except as otherwise
expressly consented to in writing in advance or approved in writing in advance
by Aceto, or under its express direction:

      (16.1  REGULAR COURSE OF BUSINESS.  Except as otherwise provided for in
this Agreement, during the period from the date hereof to the Closing Date,
Schweizerhall, Inc. shall carry on its business, including the Pharmaceutical
Ingredients Business, diligently and substantially in the same manner as
heretofore conducted, and shall not institute any new methods of management,
accounting or operation or engage in any transaction or activity, enter into
any agreement or make any commitment, except in the usual and ordinary course
of business and consistent with past practice as limited by the more
restrictive provisions of this Agreement, where applicable, or as otherwise
specifically contemplated by this Agreement and not in violation thereof.
Notwithstanding the foregoing, it is agreed that on the Closing Date no bills
shall be issued by Schweizerhall, Inc. to its customers.

      (16.2  ORGANIZATION.  Schweizerhall, Inc. shall utilize its best efforts
to preserve and keep intact its business organization relating to the Assets,
keep available to Aceto the key employees of Schweizerhall, Inc., and preserve
for Aceto its relationships relating to the Assets with suppliers, customers,
agents and others having business relations with Schweizerhall, Inc.  Under no
circumstances shall Schweizerhall, Inc. take any steps that are likely to
result in any adverse change in its assets, liabilities, business or goodwill.

      (16.3  CERTAIN CHANGES.  Except as permitted by this Agreement, without
the prior written consent of Aceto, Schweizerhall, Inc. will not:

      ((a)  Borrow or agree to borrow any funds or, incur, or assume or become
subject to, whether directly or by way of guarantee or otherwise, any
obligation or liability (absolute or contingent), other than normal credit
terms from trade creditors extended in the ordinary course of business in a
manner consistent with past practice;

      ((b)  Pay, discharge or satisfy any claim, liability or obligation
(absolute, accrued, contingent or otherwise), other than the payment, discharge
or satisfaction in the ordinary course of business and consistent with past
practice of liabilities or obligations reflected or reserved against in the
Balance Sheet, specifically disclosed in this Agreement or the Exhibits or
Schedules thereto, or thereafter incurred in the ordinary course of business
consistent with past practice in accordance with this Agreement;

      ((c)  Prepay any obligation having a fixed maturity of more than ninety
(90) days from the date such obligation was issued or incurred;

      ((d)  Permit or allow any of its material property or assets (real,
personal or mixed, tangible or intangible) to be subjected to any lien (other
than any liens reflected on its Balance Sheet or any liens on inventory
acquired from and after the date hereof in the ordinary course of business in a
manner consistent with past practice);

      ((e)  Cancel any debts or waive any claims or rights or sell, transfer,
or otherwise dispose of any of its properties or assets except in the ordinary
course of business or pursuant to existing contracts disclosed to Aceto;

      ((f)  Grant any increase in the compensation of officers or employees,
institute or amend any sales compensation plan, severance plan or other
arrangement for its officers or employees, or enter into any plan or agreement
with respect thereto;

      ((g)  Make any capital expenditures or commitments for additions to or
replacement of property, plant, equipment or intangible capital assets;

      ((h)  Pay, loan or advance any amount to, or sell, transfer or lease any
properties or assets to, or enter into agreement or arrange with, any of its
employees, officers or directors or any affiliate thereof, except for
compensation to employees, officers or directors at rates not exceeding the
rates of compensation set forth in SCHEDULE 13.13;

      ((i)  Purchase shares of capital stock or make any equity investment in,
or agree to purchase or make any equity investment in, any other entity,
corporate or otherwise;

      ((j)  Take any actions to modify or amend any of the documents comprising
the Assets or otherwise affecting Schweizerhall, Inc.'s business; or

      ((k)  Agree, whether in writing or otherwise, to do any of the foregoing.

(Except that Schweizerhall, Inc. may sell or transfer any or all of the shares
of Schweizerhall Manufacturing Company and Schweizerhall Development Company or
any other Excluded Asset.

      (16.4  CONTRACTS. During the period from the date hereof to the Closing
Date, Schweizerhall, Inc. will not enter into any contract or commitment, or
purchase any supplies or services or sell any assets, except normal contracts
or commitments for the purchase of, and normal purchases of, supplies or
services made in the usual and ordinary course of business, consistent with the
past practice of Schweizerhall, Inc., and not in violation of any other more
restrictive provision of this Article XVI.

      (16.5  INSURANCE; PROPERTY.  During the period from the date hereof to
the Closing Date, Schweizerhall, Inc. will maintain insurance against all
customary losses with respect to all property, real, personal and mixed, owned
or leased by it; and all such property shall be used, operated, maintained and
repaired in a reasonable manner.

      (16.6  NO DEFAULT. During the period from the date hereof to the Closing
Date, Schweizerhall, Inc. shall not do any act or omit to do any act, which
will cause a breach in any material respect of any contract or commitment of
Schweizerhall, Inc. or which would cause the breach in any material respect of
any representation, warranty or covenant made hereunder.

      (16.7  COMPLIANCE WITH LAWS.  Schweizerhall, Inc. will comply in all
material respects with all laws applicable to it and its properties,
operations, business and employees.

      (16.8  MAINTAIN BOOKS.  Schweizerhall, Inc. will maintain its books,
accounts and records in accordance with generally accepted accounting
principles applied on a basis consistent with prior years.

      (16.9  CONSENTS AND WAIVERS WITHOUT ANY CONDITION.  Schweizerhall, Inc.
shall not make any agreement or understanding, not earlier approved in writing
by Aceto, as a condition for obtaining any consent or waiver contemplated by
Section 13.2(h) of this Agreement.

      (16.10  ACETO PERSONNEL ON-SITE.  Schweizerhall, Inc. agrees to permit
Aceto from and after the date hereof and until the Asset Closing to station one
or more of its employees or designees at the Schweizerhall, Inc.'s premises to
monitor the Schweizerhall, Inc.'s compliance with the provisions of this
Article XVI, and to provide such persons with full access to the Schweizerhall,
Inc.'s premises and business records in connection with their performance of
this monitoring function.

ARTICLE XVII

OTHER AGREEMENTS

      (17.1  INVESTIGATION BY ACETO.  During the period from the date of this
Agreement to and including the date forty-five (45) business days from the date
of this Agreement (but no later than the Closing Date), Schweizerhall, Inc.
shall cause Aceto to be given free access at reasonable times and during normal
business hours to the offices, plants, records, files, stock books, minute
books, books of account and copies of tax returns of Schweizerhall, Inc. for
the purpose of conducting an investigation of the financial condition,
corporate status, liabilities, contracts, sales, administration, business
operations, property and title thereto, litigation, patents, trademarks,
copyrights and all other matters relating to the business, properties and
assets of Schweizerhall ,Inc through Aceto's employees or independent public
accountants or outside business consultants, provided, however, that such
investigation shall be conducted in a manner that does not unreasonably
interfere with the normal operations and employee relationships of
Schweizerhall, Inc. At least three (3) days' notice shall be given of any visit
to the premises of Schweizerhall, Inc. and only a reasonable number of persons
shall be present and shall be accompanied by a representative of Schweizerhall,
Inc.  Schweizerhall, Inc. cause its personnel to assist Aceto in making such
investigation and shall cause its counsel, accountants, employees and other
representatives to be available to Aceto for such purposes.  During such
investigation Aceto shall have the right to make copies of such records, files,
tax returns and other materials as it may deem advisable. Should Schweizerhall,
Inc. be operated by prior or other entities within the three years prior to the
execution of this Agreement then Schweizerhall Holding AG shall arrange for
Aceto's examination of said documents and records of the prior entity(ies).
Aceto shall have the right to query employees, customers, vendors, suppliers
and contractors of Schweizerhall, Inc., but shall be accompanied by a
representation of Schweizerhall, Inc. in such contacts with employees,
customers, vendors, suppliers and contractors.  Upon request, Schweizerhall,
Inc. shall supply three (3) years' records and documents to Aceto at its
offices in New York.  Until the transactions contemplated by this Agreement are
consummated, Aceto and its representatives shall treat all information obtained
in such investigation, and not otherwise known to Aceto or already in the
public domain, as confidential and if such transactions are not consummated,
shall return all copies made by Aceto and its representatives of material
belonging to Schweizerhall, Inc. and shall continue for five (5) years to treat
all such confidential information obtained as confidential.

      (17.2  ACETO'S RIGHT OF FIRST REFUSAL.

      ((a)  RIGHT OF FIRST REFUSAL. For so long as Chemische Fabrik,
Schweizerhall, Inc. or their nominees own, in the aggregate, more than 300,000
Aceto Shares, in the event that either Chemische Fabrik or Schweizerhall, Inc.
or their permitted assigns propose to sell, transfer, assign, pledge or
encumber any Aceto Shares, or any interest in such Aceto Shares, Aceto shall
have the right of first refusal with respect to all of such Aceto Shares.  If
either Chemische Fabrik or Schweizerhall, Inc. desire to transfer Aceto Shares,
they shall give a written transfer notice (the "Transfer Notice") to Aceto
describing fully the proposed transfer, including the number of Aceto Shares
proposed to be transferred, the proposed transfer price, the name and address
of the proposed transferee and proof reasonably satisfactory to Aceto that the
proposed sale or transfer will not violate any applicable federal or state
securities laws.  The Transfer Notice shall be signed both by Chemische Fabrik
and Schweizerhall, Inc., and if such sale is to be other than in a "broker's
transaction" as that term is defined in Rule 144 under the Securities Act of
1933, by the proposed transferee must be a BONA FIDE arms-length transaction,
and must constitute a binding commitment of both parties to the transfer of the
Aceto Shares.  Aceto shall have the right to purchase all of the Aceto Shares
that are the subject of the Transfer Notice at a price equal to the daily
weighted average prices of the Aceto Shares for the preceding thirty (30) days
to the date when the Transfer Notice was received by Aceto, by delivery of a
notice of exercise of the Right of First Refusal within thirty (30) days after
the date when the Transfer Notice was received by Aceto.

      ((b)  TRANSFER OF SHARES. If Aceto fails to exercise its Right of First
Refusal within thirty (30) days after the date when it received the Transfer
Notice, Schweizerhall, Inc., or their  assignees, as they case may be, may not
later than ninety (90) days following receipt of the Transfer Notice by Aceto,
conclude a transfer of the Aceto Shares subject to the Transfer Notice to the
transferee identified therein on the terms and conditions described in the
Transfer Notice, provided that any such sale is made in compliance with
applicable federal and state securities laws and not in violation of any other
contractual restrictions to which they may be bound. In connection with any
such transfer, or after the right of first refusal described in this Section
17.2 expires, Aceto's counsel shall supply any required counsel opinions with
respect to the removal of the legends described in sub-section (d) below.  Any
proposed transfer on terms and conditions different from those described in the
Transfer Notice, as well as any subsequent proposed transfer by either
Chemische Fabrik or Schweizerhall, Inc. or its assignee shall again be subject
to the Right of First Refusal and shall require compliance with the procedure
described in Subsection (a) above. If Aceto exercises its Right of First
Refusal, the parties shall consummate the sale of the Aceto Shares within sixty
(60) days after the date when Aceto received the Transfer Notice.

      ((c)  PERMITTED TRANSFERS TO AFFILIATES.  Notwithstanding the foregoing,
Chemische Fabrik and/or Schweizerhall, Inc. shall have the right to transfer
the Aceto Shares held by them to Schweizerhall Holding and/or any corporation
or other entity wholly owned by Schweizerhall Holding, provided that Aceto
receives prior written notice of such proposed transfer and the proposed
transferee of such Aceto Shares agrees, in a writing in form and substance
reasonably acceptable to Purchaser and its counsel, to be bound by the
provisions of this Section 17.2.

      ((d)  LEGEND.  All certificates representing the Aceto Shares delivered
to Schweizerhall, Inc. or any permitted transferee hereunder shall be endorsed
as follows:

      ("THE SALE, TRANSFER, ASSIGNMENT, PLEDGE OR ENCUMBRANCE OF THE SECURITIES
      REPRESENTED BY THIS CERTIFICATE AND/OR THE RIGHTS OF THE HOLDER OF SUCH
      SECURITIES ARE SUBJECT TO THE TERMS AND CONDITIONS OF A PURCHASE AND SALE
      AGREEMENT, DATED JANUARY 28, 2001, AMONG ACETO CORPORATION AND THIS
      STOCKHOLDER.  A COPY OF THE AFORESAID AGREEMENT IS ON FILE AT THE OFFICES
      OF ACETO CORPORATION.  NO SUCH SALE, ASSIGNMENT, TRANSFER, PLEDGE,
      ENCUMBRANCE OR OTHER DISPOSITION SHALL BE EFFECTIVE UNLESS AND UNTIL THE
      TERMS AND CONDITIONS OF THE AFORESAID PURCHASE AND SALE  AGREEMENT SHALL
      HAVE BEEN COMPLIED WITH IN FULL.
      (THESE SECURITIES (THE "SECURITIES") HAVE NOT BEEN REGISTERED UNDER THE
      SECURITIES ACT OF 1933, AS AMENDED, OR THE SECURITIES LAWS OF ANY STATE
      AND MAY NOT BE SOLD OR OFFERED FOR SALE IN THE ABSENCE OF AN EFFECTIVE
      REGISTRATION STATEMENT FOR THE SECURITIES OR AN OPINION OF COUNSEL OR
      OTHER EVIDENCE ACCEPTABLE TO THE CORPORATION THAT SUCH REGISTRATION IS
      NOT REQUIRED."

      (17.3  LIMITATION ON ADDITIONAL PURCHASES OF ACETO'S COMMON STOCK.  For a
period of three (3) years from the Closing Date, neither Schweizerhall Holding,
Chemische Fabrik nor Schweizerhall, Inc., nor any affiliates, subsidiaries,
parent companies thereof, or any  past or present officer or director of
Schweizerhall Holding, Chemische Fabrik, the Subsidiary Companies or
Schweizerhall, Inc. (or any member of the immediate family of such officer or
director), nor any entity that Schweizerhall Holding, Chemische Fabrik or
Schweizerhall, Inc. owns more than a five percent (5%) interest in (to the
extent Schweizerhall Holding, Chemische Fabrik or Schweizerhall, Inc. can
exercise any control over such entity's purchases), may acquire any shares of
Aceto's common stock or any direct or indirect beneficial interest in any
shares of Aceto common stock, other than the Aceto Shares issued hereunder;
PROVIDED, HOWEVER, that Aceto may waive, in whole or in part, the requirements
of this Section 17.3 in its sole and absolute discretion.

      (17.4  ALLOCATION OF ASSET PURCHASE PRICE.

      ((a)  Within ten (10) days following receipt of the Financial Statements
for the Subsidiary Companies and Schweizerhall, Inc., for the year ended
December 31, 2000, Aceto will provide to Schweizerhall, Inc. an allocation
statement (the "Asset Allocation Statement") with Aceto's proposed allocation
of the aggregate consideration payable pursuant to Section 11.2 among the
Assets.  Within ten (10) days after the receipt of such Asset Allocation
Statement, Schweizerhall, Inc. will propose to Aceto any changes to such Asset
Allocation Statement (and in the event no such changes are proposed in writing
to Aceto within such time period, Schweizerhall, Inc. will be deemed to have
agreed to, and accepted, the Asset Allocation Statement). Schweizerhall, Inc.
and Aceto will endeavor in good faith to resolve any differences with respect
to the Asset Allocation Statement within fifteen (15) days after Aceto's
receipt of written notice of objection from Schweizerhall, Inc.

      ((b)  Subject to Section 17.4(c), the parties hereto agree (i) to use the
allocations set forth in the Asset Allocation Statement provided by Aceto to
Schweizerhall, Inc. pursuant to Section 17.4(a) above, for accounting,
financial reporting and Tax purposes; (ii) that such allocations shall be in
accordance with, and as provided by, Section 1060 of the Tax Code; and (iii)
that any Tax returns or other Tax information they may file or cause to be
filed with any Governmental Authority or fiscal intermediary shall be prepared
and filed consistently with such allocation. The parties agree that, to the
extent required, they will each properly and timely file Form 8594 in
accordance with Section 1060 of the Tax Code.

      ((c)  If Schweizerhall, Inc. withholds its consent, in the manner and
within the time period specified in Section 17.4(a), to the allocation
reflected in the Asset Allocation Statement, and Schweizerhall, Inc. and Aceto
have acted in good faith to resolve any differences with respect to items on
the Asset Allocation Statement and thereafter are unable to resolve any
differences that, in the aggregate, are material, then any remaining disputed
matters will be finally and conclusively determined by an independent
accounting firm of recognized national standing (the "Allocation Arbiter")
selected by Schweizerhall, Inc. and Aceto, which firm shall not be the regular
accounting firm of Schweizerhall, Inc. or Aceto. Promptly, but not later than
fifteen (15) days after its acceptance of appointment hereunder, the Allocation
Arbiter will determine (based solely on presentations by Schweizerhall, Inc.
and Aceto and not by independent review) only those matters in dispute and will
render a written report as to the disputed matters and the resulting allocation
of Asset Purchase Price, which report shall be conclusive and binding upon the
parties. The parties hereto shall share all costs attributable to the review
and determination by the Allocation Arbiter.

      (17.5  POST-CLOSING ACCESS.  Schweizerhall, Inc. shall allow Aceto and
its representatives access to Schweizerhall, Inc.'s offices to move the Assets
until such offices are no longer occupied or utilized by Schweizerhall, Inc.
No payment of rent or utilities by Aceto shall be required for such access.

      (17.6  ACETO OFFER OF EMPLOYMENT; SEVERANCE.  Aceto shall offer
employment to five (5) executive level employees of Schweizerhall, Inc. at
their current salaries and benefits for a minimum of six (6) months. The
transaction contemplated herein is not contingent upon any of the five (5)
employees agreeing to be employed after the Closing.  It is understood that as
to any of the five (5) executive employees who choose not to be employed by
Aceto, and up to eleven (11) other non-executive employees engaged in trading
duties, they will be paid two (2) months base pay by Schweizerhall, Inc., for
which Aceto will reimburse Schweizerhall, Inc., provided, however, that such
employees do not maintain their employment with Schweizerhall, Inc. for more
than ten (10) business days following the closing of this transaction unless
requested to do so by Aceto or by Schweizerhall, Inc. at Aceto's request.
Aceto will pay to Schweizerhall, Inc. all sums due under this Section 17.6
against invoices of Schweizerhall, Inc. for same, and Schweizerhall, Inc. will
pay its employees for up to two (2) months after the Closing.

      (17.7  ACCESS TO CERTAIN RECORDS SUBSEQUENT TO CLOSING.  For a period of
five (5) years after the Closing Date, Aceto and its affiliates will promptly
afford to Schweizerhall, Inc. and its representatives and affiliates,
reasonable access during normal business hours to the books, files, records and
tax returns of the Pharmaceutical Ingredients Business, if any, transferred to
it which relate to the business and operations of the Pharmaceutical
Ingredients Business on and prior to the Closing Date, including the right to
make copies and extracts of such information (at the expense of the party
requesting such information), to the extent that access may be reasonably
required for any reasonable and legitimate business purpose; provided that nay
such access by Schweizerhall, Inc. or its representatives or affiliates shall
not unreasonably interfere with the conduct of the Pharmaceutical Ingredients
Business of Schweizerhall, Inc. transferred to Aceto hereby.  Aceto shall not
destroy or dispose of any such books, files, records or tax returns prior to
the expiration of such five (5) year period.  After the expiration of such five
(5) year period, Aceto shall give, prior to destroying or disposing of any such
books, files, records or tax returns, at least sixty (60) days' advance written
notice to Schweizerhall, Inc. of the intended destruction or disposition, and
during such sixty (60) day period Schweizerhall, Inc. have the right to take
possession of the same or to make copies of the same, all at no expense to
Aceto.  Schweizerhall, Inc. will hold in confidence, unless compelled to
disclose by judicial or administrative process or by other requirements of law,
all confidential documents and information provided to them pursuant to this
Section.

      (17.8  ACCOUNTS RECEIVABLE. After the Closing Date, if payment on account
of any accounts receivable included in the Assets is made to Schweizerhall,
Inc., Schweizerhall, Inc. shall receive such payment solely for the benefit of
Aceto and shall promptly forward such payment to Aceto.

      (17.9  TAX NOTICES.  Aceto shall promptly forward or cause to be
forwarded to Schweizerhall, Inc. all written notifications and other written
communications from any taxing authority received by Aceto or the
Pharmaceutical Ingredients Business relating to any taxes not included in the
Assumed Liabilities.  Schweizerhall, Inc. shall promptly forward or cause to be
forwarded to Aceto all written notifications and other written communications
from any taxing authority received by Schweizerhall, Inc. relating to any taxes
included in the Assumed Liabilities.

      (17.10  REFUNDS OR CREDITS.  Any refunds or credits of taxes, to the
extent such refunds or credits relate to any taxable period of Schweizerhall,
Inc. ending on or before the Closing Date, or which includes the Closing Date,
shall be for the account of Schweizerhall, Inc., other than refunds of taxes
that are included in the Assumed Liabilities.  Any refunds or credits of taxes,
if any, to the extent such refunds or credits relate to any taxable period
beginning after the Closing Date, or taxes that are included in the Assumed
Liabilities, shall be for the account of Aceto.  Schweizerhall, Inc. or Aceto
shall pay, or cause to be paid, to the other, the amount of any refunds or
credits of taxes which, pursuant to this Section <<Merge-_REF504902549>> are
for the account of the other, such payment to be made promptly after and to the
extent of the receipt of funds or the equivalent receipt of direct benefit from
the application of such refund or credit.

ARTICLE XVIII

CONFIDENTIALITY AND NON-COMPETITION
REGARDING THE ASSET PURCHASE


      (18.1  CONFIDENTIALITY. At all times after the Closing Date,
Schweizerhall Holding  shall retain in strictest confidence, unless complied to
disclose by judicial or administrative process or by other requirements of law,
and shall not use for their benefit or for the benefit of others all
confidential (i.e. non-public) information comprising or related to the
business of Schweizerhall, Inc., including, without limitation, the technology,
know-how, trade secrets, customer lists of Schweizerhall, Inc., the pricing
policies, and marketing plans or strategies respecting the business of
Schweizerhall, Inc.

      (18.2  NON-COMPETITION.

      ((a)  In consideration of the Asset Purchase Price, and for other good
and valuable consideration, the sufficiency of which is hereby acknowledged,
Schweizerhall Holding  agree that for a period of three (3) years from and
after the Closing Date, neither Schweizerhall Holding, nor any entity in which
it shall own a twenty percent (20%) or greater interest in (to the extent
Schweizerhall Holding can exercise control over such entity's business) shall,
directly or indirectly, (i) engage in a business or enterprise (either as
proprietor, partner, employee, agent, consultant, or controlling stockholder)
in the business of trading or supplying a competing product (as defined in
subsection (b) below) or (ii) interfere with, or disrupt or attempt to disrupt
the relationship (contractual or otherwise) between Aceto and its customers,
suppliers, agents, consultants, officers or employees.

      ((b)  The phrase "competing product" shall mean any product which is
either an active pharmaceutical ingredient or advanced intermediate ingredient.

      ((c)  The provisions of this Section 18.2 shall not prevent Schweizerhall
Holding  from investing its assets in securities of any corporation, or
otherwise acquiring any equity interest in any enterprise, equity securities of
which are publicly owned and traded, provided that such investments or
interests shall not result in (i) Schweizerhall Holding owning beneficially, in
the aggregate, ten percent (10%) or more of the equity securities of any
enterprise engaged in the business of trading or supplying a competing product
(herein, a "competing business") or (ii) Schweizerhall Holding  being able to
control or actively participate in the policy decisions of such competing
business.

      ((d)  The provisions of this Section O shall also
not prevent Schweizerhall Holding or Schweizerhall Inc. from: (i) offering for
sale, for physical delivery within the country of Switzerland only, competing
products to non-affiliated companies; (ii) consolidating or merging with and
into (regardless of which entity survives), or selling all or substantially all
of their assets or shares to another entity which is then engaged at the time
of such merger, consolidation or sale in the business of trading or supplying
competing products; (iii) from selling products currently produced by
Schweizerhall Manufacturing Company and/or Schweizerhall Development Company at
their manufacturing facilities in Greenville, South Carolina; or (iv) offering
for sale any Inventory repurchased from Aceto pursuant to Section 11.5 hereof
or returned to Schweizerhall, Inc. pursuant to Section 15.5 hereof.

      ((e)  In the event of a breach of Schweizerhall Holding or Schweizerhall,
Inc. of the terms of this Section18.2, as determined by a final, non-appealable
order of the appropriate deciding body, pursuant to Section 20.7, the Aceto
Shares escrowed pursuant to the Escrow Agreement shall be returned to Aceto.
Notwithstanding the foregoing, in the event of an inadvertent breach by
Schweizerhall Holding or Schweizerhall, Inc. of the terms of this Section 9.2,
Aceto shall afford Schweizerhall Holding and/or Schweizerhall, Inc. a
reasonable opportunity to cure said inadvertent breach by unwinding any
prohibited sale and/or indemnifying Aceto for any lost profits or other damage
sustained by reason thereof, before proceeding against the Aceto Shares
escrowed pursuant to the Escrow Agreement in accordance with the preceding
sentence.

      ((f)  It is the desire and intent of the parties that the provisions of
this Section 18.2, shall be enforced to the fullest extent permissible under
the laws and public policies applied in each jurisdiction in which enforcement
is sought.  If any particular provisions or portion of this Section 18.2 shall
be adjudicated to be invalid or unenforceable in any jurisdiction, this Section
18.2 shall be deemed amended to delete therefrom such provision or portion
adjudicated to be invalid or unenforceable, such amendment to apply only with
respect to the operation of this paragraph in the particular jurisdiction in
which such adjudication is made.  If there is a breach or threatened breach of
the provisions of this Section 18.2, Aceto shall be entitled to an injunction
restraining Schweizerhall Holding and/or Schweizerhall, Inc. from such breach.
Nothing herein shall be construed as prohibiting Aceto from pursuing any other
remedies for such breach or threatened breach.

ARTICLE XIX

SURVIVAL OF REPRESENTATIONS AND WARRANTIES;
INDEMNIFICATION REGARDING THE ASSET PURCHASE

      (19.1  SURVIVAL OF REPRESENTATIONS AND WARRANTIES.

      ((a)  The representations and warranties of Schweizerhall, Inc. and
Schweizerhall Holding set forth in Section 13.14 (Taxes), any representation
and warranty made in this Agreement, the breach of which constituted fraud on
the part of Schweizerhall, Inc. or Schweizerhall Holding, and any covenant or
obligation under this Agreement to be performed after the Closing Date shall
survive and remain in effect following the Closing Date until the expiration of
the applicable statute of limitations.  The representations and warranties of
Schweizerhall, Inc. and Schweizerhall Holding set forth in Section 13.5 shall
survive and remain in effect for a period of three (3) years following the
Closing Date.  All other representations and warranties of Schweizerhall, Inc.
and Schweizerhall Holding in this Agreement and any covenant or obligation to
be performed prior to the Closing Date which are intended to survive the
Closing Date shall survive and remain in effect for a period of two (2) years
following the Closing Date unless covered by an insurance policy extending
beyond such two (2) year date, in which case they shall extend until the
expiration of such insurance policy and recovery in that case shall be limited
to the coverage of the policy provided by the insurer.  Except as provided in
Section 19.7 below, the survival of representations and warranties set forth in
this Section 19.1 shall not be affected in any manner by the Purchaser's
exercise of its right to conduct an investigation pursuant to Section 17.1
hereof.

      ((b)  The representations and warranties of Aceto set forth in this
Agreement and any covenant or obligation of Aceto to be performed prior to the
Closing Date shall survive and remain in effect for a period of two (2) years
following the Closing Date.

      (19.2  INDEMNITY AGAINST CLAIMS.  Subject the to limitations of Section
19.5, Schweizerhall Holding and Schweizerhall, Inc., jointly and severally,
agree to indemnify and hold Aceto harmless from and against the following:

      ((a)  Any and all liabilities, losses, damages, claims, costs and
reasonable expenses of any nature, whether absolute, contingent or otherwise,
which are not expressly assumed by Aceto in the Bill of Sale and Assumption
Agreement;

      ((b)  Any and all liabilities, losses, damages, claims, costs and
expenses suffered by Aceto (whether awarded against Aceto or paid by Aceto in
settlement of a claim as provided in Section 20.4 or otherwise suffered),
resulting from any material misrepresentation, breach of any warranty, or non-
fulfillment of any covenant or agreement on the part of Schweizerhall, Inc.
contained in this Agreement (including, without limitation, the guaranty of the
accounts receivable in Section 15.6) or in any statement, attachment, schedule,
exhibit or certificate furnished or to be furnished Schweizerhall, Inc. to
Aceto pursuant hereto or in connection with the transactions contemplated
hereby if the written claim for indemnification is made within the survival
period specified in Section 19.1(a);

      ((c)  Any and all liabilities, losses, damages, claims, costs and
reasonable expenses suffered by Aceto (whether awarded against Aceto or paid by
Aceto in settlement of a claim as provided in this agreement or otherwise
suffered), resulting from any transaction, matter or thing, happening or
occurrence, or directly or indirectly related to or arising from the
transactions contemplated hereby, occurring prior to the Asset Closing
(including any transactions, matters, or thing, happening, or occurrence
occurring prior to the Asset Closing in Schweizerhall, Inc.) and transfer of
the Assets to Aceto hereunder; and

      ((d)  Any and all actions, suits, proceedings, demands, assessments or
judgments, costs and expenses (including attorneys' fees) incident to any of
the foregoing.

      (19.3  INDEMNITY AGAINST CLAIMS.  Subject to the limitations of Section
19.4, Aceto agrees to indemnify and hold Schweizerhall Holding and
Schweizerhall, Inc. harmless from and against the following:

      ((a)  Any and all liabilities, losses, damages, claims, costs and
expenses suffered by Schweizerhall Holding and/or Schweizerhall, Inc. (whether
awarded against Schweizerhall Holding and/or Schweizerhall, Inc. or paid by
Schweizerhall Holding and/or Schweizerhall, Inc. in settlement of a claim as
provided in Section 20.3 or otherwise suffered), resulting from any material
misrepresentation, breach of any warranty, or non-fulfillment of any covenant
or agreement on the part of Aceto contained in this Agreement, including,
without limitation, Aceto's failure to pay or perform the Assumed Liabilities,
or in any statement, attachment, schedule, exhibit or certificate furnished or
to be furnished by Aceto to Schweizerhall, Inc. pursuant hereto or in
connection with the transactions contemplated hereby if the written claim for
indemnification is made within the survival period specified in Section 19.1;

      ((b)  Any and all liabilities, losses, damages, claims, costs and
reasonable expenses suffered by Schweizerhall Holding or Schweizerhall, Inc.
(whether awarded against Schweizerhall Holding or Schweizerhall, Inc. or paid
by Schweizerhall Holding or Schweizerhall, Inc. in settlement of a claim as
provided in Section 10.4 or otherwise suffered), resulting from any
transaction, matter or thing, happening or occurrence directly or indirectly
related to or arising from the conduct of the Pharmaceutical Ingredients
Business by Aceto following the Asset Closing if the written claim for
indemnification is made within the survival period specified in Section
10.1(a); and

      ((c)  Any and all actions, suits, proceedings, demands, assessments or
judgments, costs and expenses (including attorneys' fees) incident to any of
the foregoing.

      (19.4  NOTICE OF CLAIM, ASSUMPTION OF DEFENSE AND SETTLEMENT OF CLAIMS.

      ((a)  Any person entitled to indemnification under this Agreement (the
"Indemnitee") shall promptly give notice (an "Indemnification Notice") in
accordance with Section 20.1 hereof to the parties required to provide
indemnification (collectively the "Indemnifying Party") after the Indemnitee
shall have knowledge of any demands, claims, actions or causes of action
(singly, a "Claim" and hereinafter referred to collectively, as "Claims") which
might give rise to a Claim by the Indemnitee against the Indemnifying Party
stating the nature and basis of said Claim and amount thereof, to the extent
known.  A failure to give notice hereunder shall not relieve the Indemnifying
Party from any obligation hereunder unless (x) such failure to give notice
shall materially and adversely affect Indemnifying Party's ability to defend
the Claim; or (y) notice is received after the expiration of the applicable
survival period specified in this Agreement.  Each such Indemnification Notice
shall specify in reasonable detail the nature and amount of the Claim and
shall, to the extent available to the Indemnitee include such supporting
documentation as shall reasonably be necessary to apprise the Indemnifying
Party of the facts giving rise to the Claim.  After the delivery of an
Indemnification Notice certifying that the Indemnitee has incurred or had
asserted against it any liabilities, claims, losses, damages, costs or expenses
for which indemnity may be sought in accordance with the terms of this Article
XIX (the "Damages"), the Indemnitee shall make a claim in an amount equal to
the incurred Damages or asserted Damages, as the case may be (which, in the
case of any asserted Damages shall include the Indemnitee's reasonably
estimated cost of the defense thereof, hereinafter the "Estimated Defense
Costs"), and subject to the limitations in Section 19.4, the Indemnifying Party
shall promptly reimburse the Indemnitee for the Damages for which the
Indemnitee has incurred and not been indemnified.  In the event the amount of
such Damages are not promptly reimbursed by Chemische Fabrik as aforesaid, the
amount of such unreimbursed Damages shall accrue interest at a rate equal to
two percent (2%) above the applicable prime rate of Citibank, N.A. If the
Indemnifying Party is Schweizerhall Holding or Schweizerhall, Inc., then, if
such Indemnifying Party does not dispute such Claim, such Indemnifying Party
may designate whether the Indemnified Party shall satisfy such Claim from Aceto
Shares escrowed pursuant to the Escrow Agreement or by setoff against the Stock
Purchase Note and/or the Asset Purchase Note pursuant to Section 19.6.

      ((b)  With respect to any third party Claims made subsequent to the
Closing Date, and prior to the expiration of the applicable survival period,
the following procedures shall be observed:

            ((i)  Promptly after delivery of an Indemnification Notice in
      respect of a Claim, the Indemnified Party may elect, by written notice to
      the Indemnitee, to undertake the defense thereof with counsel reasonably
      satisfactory to the Indemnitee and at the sole cost and expense of the
      Indemnifying Party.  In the event the Indemnifying Party elects to assume
      the defense of any such Claim, it shall not, except as provided in
      Section 10.3(b)(ii) be liable to the Indemnitee for any legal fees, costs
      and expenses incurred by the Indemnitee after the date thereof, in
      connection with such defense.  The Indemnitee shall have the right to
      participate in, but not control the conduct of, any such action through
      counsel of its own choosing, at its own expense.

            ((ii)  Unless and until the Indemnifying Party assumes the defense
      of the third party Claim as provided in Section 10.3(b)(i), or in the
      event the Indemnifying Party ceases to diligently conduct such defense,
      the Indemnified Party may defend against the third party Claim in any
      manner it reasonably may deem appropriate, at the expense of the
      Indemnifying Party.

            ((iii)  Failure by the Indemnifying Party to notify the Indemnitee
      of its election to defend any such action within forty five (45) days
      after notice thereof shall have been given, shall be deemed a waiver by
      the Indemnifying Party of its right to defend such action.  If the
      Indemnifying Party assumes the defense of any such Claim, its obligations
      hereunder as to such Claim shall be limited to taking all steps necessary
      in the defense or settlement of such Claim and to holding the Indemnitee
      harmless from and against any and all losses, damages, expenses and
      liabilities awarded in any such proceeding or arising out of any
      settlement approved by the Indemnifying Party or any judgment in
      connection with such Claim.

            ((iv)  The Indemnifying Party shall not, in the defense of any such
      Claim, consent to the entry of any judgment or enter into any settlement
      with respect to the third party Claim without the prior written consent
      of Indemnitee (which consent shall not be unreasonably withheld,
      conditioned or delayed), except that no consent of the Indemnitee shall
      be required if the judgment or proposed settlement (x) involves only the
      payment of money damages to be paid by the Indemnifying Party and does
      not impose any injunction or other equitable relief upon the Indemnitee,
      (y) includes as an unconditional term thereof a full dismissal of the
      litigation or proceeding with prejudice and the delivery by the claimant
      or plaintiff to the Indemnitee of a release from all liability with
      respect to such claim or litigation, and (z) does not by its terms
      attribute liability to the Indemnitee.

                  *e) In no event will the Indemnitee consent to the entry of
      any judgment or enter into any settlement with respect to the third party
      Claim without the prior written consent of the Indemnifying Party, which
      consent shall not be unreasonably withheld, conditioned or delayed.

                  *f) The Indemnitee will cooperate fully with the Indemnifying
      Party in the conduct of any proceeding as to which the Indemnifying Party
      assumes the defense hereunder.  Such cooperation shall include (a)
      providing the Indemnifying Party and its counsel access to all books and
      records of the Indemnitee or any Subsidiary Company to the extent
      reasonably related to such proceeding, (b) furnishing information about
      the Indemnitee and the Subsidiary Companies to the Indemnifying Party and
      their counsel, (c) making employees available to counsel to the
      Indemnifying Party, and (d) preserving the existence of and maintaining
      all books and records of the Indemnitee or the Subsidiary Companies that
      may reasonably be deemed to be potentially relevant to any such
      proceeding until the proceeding is finally concluded.

      19.5  LIMITATIONS ON LIABILITY, RECOURSE.

      (a)  The obligations of the Indemnifying Party with respect to any
indemnifiable Claim are subject to the limitation that an Indemnitee may not
make or bring any claim against an Indemnifying Party in respect of any such
indemnifiable Claim unless the aggregate amount of all indemnifiable Damages
from time to time incurred by all Indemnitees collectively exceeds Twenty Five
Thousand Dollars ($25,000) (the "Threshold").  Once the aggregate amount
exceeds the Threshold, then the aggregate amount of Damages shall be
indemnifiable.

      (b)  The amounts for which any Indemnifying Party shall be liable
pursuant to this Article XIX shall be reduced by the amount of any proceeds
received or receivable by an Indemnitee from any insurance policy covering the
event or events giving rise to such liability or other collateral sources (such
as contractor indemnities of any person outside this Agreement).

      (c)  If the Indemnitee receives any payment (including, without
limitation, payment by means of release of escrowed Aceto Shares or by means of
setoff against the Asset Purchase Notes) from an Indemnifying Party in respect
of any Damages pursuant to this Article XIX and the Indemnitee could have
recovered all or a part of such Damages from a third party based on the
underlying claim asserted against the Indemnifying Party, the Indemnitee shall
assign such of its rights to proceed against that third party as are necessary
to permit the Indemnifying Party to recover from the third party the amount of
such payment.

      (d)  Notwithstanding anything in this Agreement to the contrary, recourse
against Schweizerhall, Inc. or Schweizerhall Holding with respect to their
obligations under Section 19.2 (other than any indemnity arising from the
guaranty of the accounts receivable in Section 15.6, Section 13.5
(Environmental Matters), Section 13.14 (Taxes) or fraud, which are specifically
excluded from this Section 19.4) shall be limited to (i) the 200,000 Aceto
Shares held in escrow pursuant to the Escrow Agreement, in accordance with the
terms and conditions of the Escrow Agreement; and (ii) setoff against the Stock
Purchase Note and the Asset Purchase Note in accordance with Section 19.5.
Schweizerhall Inc.'s and Schweizerhall Holding's obligations under Section 19.2
shall be non-recourse against Schweizerhall, Inc. and Schweizerhall Holding and
all of the assets and property of Schweizerhall, Inc. and Schweizerhall Holding
other than the items described in clauses (i) and (ii) above, and Aceto agrees
to look solely to such items to satisfy Schweizerhall Inc.'s and Schweizerhall
Holding's obligations under Section 19.2.

      (e)  It is further agreed that indemnifiable Claims arising under Section
4.7 and Section 13.5 shall be limited to $4,000,000.

      (f)  Notwithstanding anything in this Agreement to the contrary, recourse
against Aceto with respect to its obligations under Section 19.3 (other than
any indemnity arising from the assumption of the Assumed Liabilities described
in Section 11.6 (a) and (b) which are specifically excluded from this Section
19.4) shall be limited to the market value on the Closing Date of the 200,000
Aceto Shares held in escrow pursuant to the Escrow Agreement plus the unpaid
principal amount of the Asset Purchase Note and Stock Purchase Note on the date
of the Claim.

      19.6  RIGHT TO SET OFF.  Notwithstanding anything to the contrary set
forth in this Agreement or any Exhibit hereto, in the event that the Indemnitee
shall have a Claim against Schweizerhall, Inc. for which it has not been fully
and completely indemnified as contemplated above, the Indemnitee shall have the
right to set off the amount of such Claim against Schweizerhall, Inc. against
any amounts due to Schweizerhall, Inc. under the Stock Purchase Note or the
Asset Purchase Note; provided, that Indemnitee shall have given Schweizerhall,
Inc. notice of such Claim as provided above and Schweizerhall, Inc. has not
objected in good faith to such Claim by written notice to the Indemnitee within
twenty (20) days after the Indemnification Notice is received.  If
Schweizerhall, Inc. so objects, the applicable Purchaser's obligation to pay
the principal amount of the applicable Note equal to the amount of such Claim
and interest with respect thereto shall be suspended until such objection is
resolved.  If such resolution results in the setoff of less than all of the
alleged Claim, then within ten (10) days after such resolution, the applicable
Purchaser shall pay the balance of such suspended principal amount, together
with interest thereon, to Schweizerhall, Inc. as the case may be.

      19.7  EFFECT OF CLOSING.  Notwithstanding any provision of this Agreement
which may be to the contrary, (i) Aceto shall not be entitled to
indemnification from Schweizerhall, Inc. or Schweizerhall Holding with respect
to any breach of any representation, warranty or covenant of Schweizerhall,
Inc. or Schweizerhall Holding if the Indemnifying Party can show by a
preponderance of the evidence that the events or conditions constituting or
resulting in such breach were disclosed to Aceto and its counsel in writing at
any time on or prior to Closing Date, and (b) Schweizerhall, Inc. and
Schweizerhall Holding shall not be entitled to indemnification from Aceto
hereunder with respect to any breach of any representation, warranty or
covenant of Aceto if the Indemnifying Party can show by a preponderance of the
evidence that the events or conditions constituting or resulting in such breach
were disclosed to Schweizerhall Holding or Schweizerhall, Inc. and its counsel
in writing at any time prior to the Closing Date.

ARTICLE XX

GENERAL PROVISIONS REGARDING THE
STOCK PURCHASE AND THE ASSET PURCHASE.

      20.1  NOTICES.  Any notice, demand or other communication required or
permitted to be given pursuant to this Agreement shall have been sufficiently
given for all purposes (a) if delivered personally to the party or to an
executive officer of the party to whom such notice, demand or other
communication is directed on the date of such personal delivery, or (b) if sent
by overnight delivery service, such as Federal Express, United Parcel Service,
Airborne Express, U.S. Express Mail, etc., on the second business day following
delivery of such notice to the overnight delivery carrier, provided the same is
fully paid for and properly addressed, or (c) if sent by registered or
certified mail, postage prepaid, addressed to Chemische Fabrik or
Schweizerhall, Inc., Aceto or Purchaser at its address (as set forth below) on
the fifth business day after the date on which it was deposited in a regularly
maintained receptacle for the deposit of United States mail; or (d) if sent by
facsimile transmission, on the date of such transmission, if confirmed as
received that day by the receiving party, and the original notice is sent that
day by first class mail, postage prepaid.

            (a)  in the case of Schweizerhall Holding the address for notices
      shall be:

                  Schweizerhall Holding
                  Elsasserstrasse 229
                  Basel, Switzerland
                  Attn: Dr. Hans-Peter Schaer

                  with a copy to:

                  Rechtsanwaelte
                  Harrer & Krevet
                  Humboldtstr. 3
                  0-79539 Lorrach, Germany
                  Attention:  Mrs. Heidrun McKenzie

                  and to:
                  Orloff, Lowenbach, Stifelman & Siegel, P.A.
                  101 Eisenhower Parkway
                  Roseland, New Jersey  07068
                  Attention:  Sanders M. Chattman, Esq.

            (b) in the case of Chemische Fabrik the address for notices shall
      be:

                  Chemische Fabrik
                  Elsasserstrasse 229
                  Basel, Switzerland
                  Attention: Dr. Hans-Peter Schaer

                  with a copy to:

                  Rechtsanwaelte
                  Harrer & Krevet
                  Humboldtstr. 3
                  0-79539 Lorrach, Germany
                  Attention:  Mrs. Heidrun McKenzie

                  and to:

                  Orloff, Lowenbach, Stifelman & Siegel, P.A.
                  101 Eisenhower Parkway
                  Roseland, New Jersey  07068
                  Attention:  Sanders M. Chattman, Esq.

            (c) in the case of Schweizerhall, Inc. the address for notices
      shall be:

                  Schweizerhall, Inc.
                  25 Corporate Place South
                  Piscataway, New Jersey  08854
                  Attention:

                  with a copy to:

                  Orloff, Lowenbach, Stifelman & Siegel, P.A.
                  101 Eisenhower Parkway
                  Roseland, New Jersey  07068
                  Attention:  Sanders M. Chattman, Esq.

            (d) in the case of Aceto the address for notice shall be:

                  Aceto Corporation
                  One Hollow Lane
                  Lake Success, NY  11042
                  Attention: Mr. Leonard Schwartz
                                 Chief Executive Officer

                  with a copy to:

                  Fischer and Burstein P.C.
                  98 Cutter Mill Road
                  Great Neck, New York 11021
                  Attention: Stanley H. Fischer, Esq.

            (e)   in the case of Purchaser the address for notices shall be:

                  Aceto Corporation
                  One Hollow Lane
                  Lake Success, NY  11042
                  Attention: Mr. Leonard Schwartz
                                 Chief Executive Officer

                  with a copy to:

                  Fischer and Burstein P.C.
                  98 Cutter Mill Road
                  Great Neck, New York 11021
                  Attention: Stanley H. Fischer, Esq.

or to such other address or to such other person as Chemische Fabrik,
Schweizerhall, Inc., Aceto or Purchaser shall have last designated by written
notice given as herein provided.

      20.2  MODIFICATION.  This Agreement and the Exhibits and Schedules
annexed hereto contain the entire agreement between the parties hereto and
there are no agreements, warranties or representations with respect to the
subject matter hereof which are not set forth herein.  All prior negotiations,
agreements and understandings are superseded hereby.  This Agreement may not be
modified or amended except by an instrument in writing duly signed by or on
behalf of the parties hereto.

      20.3  PUBLIC ANNOUNCEMENTS. The parties will advise and consult with one
another prior to the issuance of any public announcements pertaining to the
proposed transaction, and no such announcement will be made by Schweizerhall
Holding, Chemische Fabrik or Schweizerhall, Inc., without the prior consent of
Aceto.  The parties understand that since Aceto is a public company it may be
required to make an announcement.

      20.4  TERMINATION.  The Stock Purchase and Asset Purchase  contemplated
herein may be terminated and/or abandoned at anytime, but not later than the
Closing:

      (a)  By Aceto or Purchaser, in their sole discretion, from the date of
this Agreement to and including the date forty-five (45) business days from the
date of the last execution of this Agreement, but no later than the Closing
Date, for one or more of the following reasons:

            (i)  If any schedule delivered by Chemische Fabrik, the Subsidiary
      Companies or Schweizerhall, Inc. annexed hereto or other representation
      made by them herein, contains a misstatement or omission that could
      reasonably be determined by Aceto to have a Material Adverse Effect, or
      is updated or completed or delivered for the first time, and as so
      updated, completed or delivered for the first time, discloses changes,
      additions or information which could reasonably be determined by Aceto to
      have a Material Adverse Effect unless the matters relating thereto were
      disclosed to Aceto in the documents attached as SCHEDULE 20.4 hereto
      which were delivered to Stanley Fischer, Esq. on or before the close of
      business on January 24, 2001;

            (ii)  Aceto or Purchaser discovers or identifies the existence of
      an undisclosed liability, or potential liability of the Subsidiary
      Companies or Schweizerhall, Inc., or an undisclosed claim against, or
      potential claim against, the Subsidiary Companies or Schweizerhall, Inc.,
      or any other matter which individually, or in the aggregate, could
      reasonably be determined by Aceto to have a Material Adverse Effect; or

            (iii)  If the Subsidiary Companies or Schweizerhall, Inc  shall
      have suffered since September 30, 2000 any adverse change (whether or not
      such change is described in the Schedules hereto or any supplement to the
      Schedules) which could reasonably be determined by Aceto to have a
      Material Adverse Effect.

                     Provided, however, that in no event shall the occurrence
      of the events described in Section 20.5 below be deemed the occurrence of
      a Material Adverse Effect.

      (b)  By Chemische Fabrik in its sole discretion if any schedule delivered
by Aceto or Purchaser annexed hereto contains a misstatement or omission that
could reasonably be determined by Aceto to have a Material Adverse Effect, or
is updated, or completed, and as so updated or completed, discloses changes or
additions to any previously delivered or not completed schedule which could
reasonably be determined by Chemische Fabrik to have a Material Adverse Effect;
or

      (c)  By Aceto or Purchaser, as the case may be, in their sole discretion
if the audited Financial Statements disclose changes that would have a Material
Adverse Effect.

      20.5  RENEGOTIATION.  If, prior to the Closing Date, Aceto reasonably
determines through documentary data or personal evaluation that the prospective
gross profits for the Subsidiary Companies and the Pharmaceutical Ingredients
Business of Schweizerhall, Inc. will be, as a whole, more than fifteen percent
(15%) below the aggregate gross profits for such businesses during the year
ending December 31, 2000 (as shown in the audited financial statements for the
Subsidiary Companies and Schweizerhall, Inc. for the year ended December 31,
2000) (the "2000 Gross Profits"), then Aceto shall so inform Chemische Fabrik
and the parties shall attempt to negotiate in good faith a mutually acceptable
reduction to the number of Aceto Shares included in the Stock Purchase Price to
account for such perceived shortfall; provided, however, that in no event shall
the number of Aceto Shares deliverable hereunder in respect of the Stock
Purchase Price be reduced by more than 180,000 Aceto Shares.  If, prior to the
Stock Closing, the parties are unable to agree that there will be such a
reduction in gross profits or if they are unable to agree upon a mutually
acceptable reduction in the Stock Purchase Price, 180,000 of the Aceto Shares
to be delivered in respect of the Stock Purchase Price shall instead be placed
in escrow with the Escrow Agent under a separate escrow agreement in form and
substance reasonably acceptable to the parties.  The parties will continue to
negotiate in good faith with respect to these matters following the Closing
Date.  If no agreement is reached, then, during January, 2002 the parties will
determine if the gross profits from sales of products indicated in Chemische
Fabrik's projections for fiscal year 2001 (a copy of which is attached as
Schedule 20.5) (the "2001 Projections") to the customers indicated in the 2001
Projections (the "Adjusted 2001 Gross Profits") are more than fifteen percent
(15%) less than the 2000 Gross Profits.  If such a reduction did occur, the
parties shall then attempt to negotiate a mutually acceptable reduction in the
number of Aceto Shares included in the Stock Purchase Price; provided, however,
that in no event shall the number of Aceto Shares deliverable hereunder in
respect of the Stock Purchase Price be reduced by more than 180,000 Aceto
Shares.  If the parties are unable to agree on the amount of the reduction by
February 28, 2002, then the Stock Purchase Price shall be reduced by 1,200
Aceto Shares (but no more than 180,000 shares) for every 0.1% that the
percentage shortfall in the Adjusted 2001 Gross Profits as compared to the 2000
Gross Profits is more than fifteen percent (15%) of the 2000 Gross Profits.

      20.6  PROCEDURE UPON TERMINATION.  In the event of termination and
abandonment pursuant to Section 20.4 hereof, written notice thereof shall
forthwith be given to the other parties hereto.  If the transactions
contemplated by this Agreement are terminated and/or abandoned pursuant to
Section 20.4 hereof the Secrecy Agreement dated September 15, 2000 between
Aceto and Schweizerhall Holding shall remain in full force and effect and each
party to this Agreement will redeliver all documents, work papers and other
material of the other party relating to the transactions contemplated hereby,
whether so obtained before or after the execution hereof, to the party
furnishing the same, and neither party shall have any liability or further
obligation to the other party to this Agreement.

      20.7  GOVERNING LAW AND DISPUTE RESOLUTION.

      (a)  This Agreement shall be governed by and construed and enforced in
accordance with the laws of the State of New York applicable to agreements made
and to be performed entirely within the State.  Except as otherwise provided in
Sections 2.4 11.4 and 17.4 the Parties agree to submit any disputes involving
money or damages greater than $100,000 relating to this Agreement and/or
transactions, duties, or obligations to be performed under this Agreement, to
mediation with a mediator approved by the Parties to the dispute.  If the
Parties resolve their disputes through mediation, the Parties shall share the
mediator's fees evenly but pay their own attorneys' fees and other expenses
related to mediation.  If mediation fails to resolve all disputes within thirty
(30) days after the Parties submit the dispute to a mediator, then either Party
may file a court action.  The Parties agree that mediation is a pre-condition
to filing an action of any kind.  The prevailing Party in any action relating
to transactions contemplated by this Agreement shall be entitled to costs and
expenses including reasonable attorneys fees and the attorney's fees and
expenses incurred in connection with mediation that failed to resolve the
dispute.

      (b)  In the event mediation fails with respect to a dispute arising under
the Stock Closing, Schweizerhall Holding, Chemische Fabrik, Schweizerhall,
Inc., Aceto and Purchaser hereby irrevocably agree to binding arbitration in
accordance with the Arbitration Rules of the Netherlands Arbitration Institute
(Netherlands Arbitrage Instituut) in the Hague, The Netherlands over any action
or proceeding arising out of any dispute between Schweizerhall Holding,
Chemische Fabrik, Schweizerhall, Inc. and/or Aceto arising from or relating to
the Stock Closing and irrevocably agree, in this regard, not to commence any
action or proceeding arising out of any such dispute in any other jurisdiction.
The arbitral tribunal shall be composed of three (3) arbitrators and the
arbitral procedure shall be conducted in the English language.  Schweizerhall
Holding, Chemische Fabrik, Schweizerhall, Inc., Aceto and Purchaser further
irrevocably consent to the service of process in any such action or proceeding
by the mailing of a copy of such process to it at the address set forth above.

      (c)  In the event mediation fails with respect to a dispute arising under
the Asset Closing, Schweizerhall Holding, Schweizerhall, Inc. and Aceto hereby
irrevocably agree that any State or Federal court located in New York State
shall have exclusive jurisdiction over any action or proceeding arising out of
any dispute between Schweizerhall, Inc. and Aceto arising from the Asset
Closing, and irrevocably agree, in this regard, not to commence any action or
proceeding arising out of any such dispute in any other jurisdiction.
Schweizerhall, Inc. and Aceto further irrevocably consent to the jurisdiction
of such courts and consent to the service of process in any such action or
proceeding by the mailing of a copy of such process to it at the address set
forth above.  In the event Aceto seeks to proceed against Schweizerhall Holding
in respect of any dispute arising from the Asset Closing, such dispute shall be
resolved by binding arbitration in The Hague, The Netherlands, in accordance
with the procedures set forth above for disputes arising from the Stock
Closing, in which case Schweizerhall Holding, Schweizerhall, Inc. and Aceto
irrevocably consent to such jurisdiction in The Netherlands.  Notwithstanding
the foregoing, Aceto shall have the right to proceed against Schweizerhall,
Inc. alone in New York State, as provided above, if it so chooses, and
Schweizerhall Holding shall not commence any action in respect of any such
dispute between Aceto and Schweizerhall, Inc. in any other jurisdiction nor
shall Schweizerhall, Inc. assert that Schweizerhall Holding is a necessary
party in such action.

      (d)  Any judgment obtained in accordance with the foregoing procedures
may, at Aceto's election, be applied against the Aceto Shares escrowed under
the Escrow Agreement in accordance with the procedures set forth herein and/or
as a set off against the Stock Purchase Note or Asset Purchase Note.

      20.8  BINDING EFFECT; ASSIGNMENT.  This Agreement shall be binding upon,
and inure to the benefit of, the parties and their respective successors and
assigns, if any.  Aceto may freely assign any or all of its rights under this
Agreement (including its indemnification rights under Articles X and XIX), in
whole or in part to any other party hereto or of any other person or entity.
This Agreement and all the rights hereunder may not be assigned by
Schweizerhall Holding, Chemische Fabrik or Schweizerhall, Inc. except in
connection with a merger, consolidation, or sale of all or substantially all of
the assigning party's relevant business or assets or with the prior written
consent of Aceto.  Any attempted assignment in violation of this Section 20.8
by Schweizerhall Holding, Chemische Fabrik or Schweizerhall, Inc. without the
prior written consent of Aceto or Aceto's successors or assigns, if any, shall
be null and void.

      20.9  BOARD MEMBERSHIP.  Aceto shall, subject to its by-laws and as
otherwise required by law, extend to a nominee of Schweizerhall Holding AG
(provided that said nominee is an employee of Schweizerhall Holding AG or, if a
non-employee of Schweizerhall, Aceto's written approval to the nominee shall be
required and shall not be withheld without valid reason) an invitation to join
Aceto's Board of Directors. For the first year following the Closing Date, it
is agreed that this nominee shall be Dr. Hans Peter Schar.

      20.10  COUNTERPARTS.  This Agreement may be executed simultaneously in
any number of counterparts, each of which shall be deemed an original but all
of which together shall constitute one and the same instrument.

      20.11  PARAGRAPH HEADINGS.  The paragraph headings in this Agreement are
for convenience of reference only and shall not be deemed to alter or affect
any provision hereof.

      20.12  TRANSACTION EXPENSES.  Notwithstanding anything else in this
Agreement to the contrary, the parties hereto shall each be responsible for the
payment of (and shall indemnify and hold the other party or parties hereto
harmless against) any and all of its own expenses, including without limitation
the fees and expenses of counsel, accountants and other advisers, arising out
of or relating directly or indirectly to the transactions contemplated by this
Agreement, whether or not such transactions are consummated in whole or in
part.

      20.13  WAIVER.  The waiver of one breach or default hereunder shall not
constitute the waiver of any other or subsequent breach or default.

      20.14  NO AGENCY.  This Agreement shall not constitute either party the
legal representative or agent of the other, nor shall either party have the
right or authority to assume, create, or incur any liability or any obligation
of any kind, express or implied, against or in the name of or on behalf of the
other party.

      IN WITNESS WHEREOF, the parties hereto have duly executed this Agreement
the date and date first above written.

ACETO CORPORATION                               SCHWEIZERHALL, INC.
On behalf of itself and Purchaser

By:  /S/ Leonard S. Schwartz                    By:  /S/ Dr. A. Muller
       Signature                                       Signature
       Leonard S. Schwartz                             Executive Vice President
       Chief Executive Officer

EXECUTED IN BASEL, SWITZERLAND

CHEMISCHE FABRIK SCHWEIZERHALL                  SCHWEIZERHALL HOLDING AG


By:    /S/ Hans Peter Schaer                    By:    /S/ Hans Peter Schaer
          Signature                                      Signature


                               LIST OF SCHEDULES

1.0         List of Subsidiary Companies

1.5(a)      List of Receivables

1.5(b)      Fixed Assets

1.5(c)      Inventory and Goods In Transit

1.5(d)      Prepaid Expenses

1.5(i)      Contracts

4.1         Jurisdiction Where the Subsidiary Companies are
            Authorized to do Business

4.3(a)      Stock Transaction History of the Companies

4.3(b)      Redemption Rights and Dividend Obligations

4.3(c)      Outstanding Preemptive or Conversion Rights,
            Options, or Warrants

4.4         Grandchild Corporation, Representative Offices, Joint
            Ventures and Other Ownerships.

4.5         Objections to Marketable Title of Assets

4.6         Property Defects

4.7(a)      Transportation, Generation or Disposal of
            Environmentally Sensitive Material

4.7(b)      Expenses Arising From Violations (Purported or
            Otherwise) of Environmental Law.

4.7(c)      Copies of Permits, Licenses, Authorizations,
            Certifications, Notices of Violations, etc. with regard to
            Environmentally Sensitive Material.

4.7(d)      List of Environmentally Sensitive Material which
            will Result in Material Liability

4.8         Intellectual Property and Claims Asserted and/or
            Pending

4.9         Dossiers and Drug Master Files

4.10(a)     Past Violations of Laws and Regulations.

4.10(b)     Knowledge of Violation of Law

4.11(a)     Contracts

4.11(b)     Forfeiture Contracts

4.12(a)     Audited Financial Statements of the Subsidiary
            Companies for the Three Years Ended December 31, 2000

4.12(b)     Material Liabilities

4.12(c)     Adverse Changes since September 30, 2000.

4.12(d)     List of Long-Term Debt of the Subsidiary Companies

4.12(e)     Unaudited Financial Statement of the Subsidiary
            Companies as of September 30, 2000

4.12(f)     Delinquent Debtors and Disputed Debtors

4.13        Litigation

4.14        Employment Information

4.14(a)     Three Years Income Tax Returns

4.14(b)     Tax Deficiencies and Liens.

4.16        Absence of Changes since September 20, 2000

4.17        Insurance

4.18        Transaction with Affiliates

4.20        Employee Benefit Plans

5.3         Stock Transaction History of Aceto

5.6         Adverse Changes Since June 30, 2000

5.7         Litigation

8.4         Loans Payables Owed by SLR and Chemische Fabrik

12.2(f)  Adverse Changes since September 30, 2000

13.1     Jurisdictions Where Schweizerhall, Inc. is Authorized to Do Business

13.3(a)  Objection to Marketable Title of Schweizerhall, Inc.'s Assets

13.3(b)  Contracts Affecting Assets.

13.4     Property Defects

13.5(a)  Transportation, Generation or Disposal of Environmentally Sensitive
         Material by Schweizerhall, Inc.

13.5(b)  Schweizerhall, Inc, Expenses arising from Violations (Purported or
         Otherwise) of Environmental Law.

13.5(c)  Schweizerhall, Inc. Copies of Permits, Licenses, Authorizations,
         Certifications, Notices of Violations, etc., with regard to
         Environmentally Sensitive Material.

13.5(d)  Schweizerhall, Inc. List of Environmentally Sensitive Material which
         will Result in Material Liability.

13.7     Schweizerhall, Inc. Drug Master Files and Dossiers

13.8     Knowledge of Violation of Law

13.9(b)  Contracts

13.9(b)  Forfeiture Contracts.

13.10(a) Audited Financial Statements of Schweizerhall, Inc. for the Three
         Years Ended
         December 31, 2000

13.10(b) Material Liabilities

13.10(c) Non-Permitted Actions

13.10(d) Unaudited Financial Statements of Schweizerhall, Inc. as of September
30, 2000

13.10    (e)Delinquent Debtors and Disputed Debtors.

13.11    Litigation

13.12    Validity of Assignment

13.13    Employment Information

13.13    Tax Deficiencies and Liens

13.15    Absence of Changes since September 30, 2000

13.16    Schweizerhall, Inc. Insurance Policies

13.16    Transactions with Affiliates

20.5     Year 2001 Projections

LIST OF EXHIBITS

A        Escrow Agreement

B        Stock Purchase Note

C        Guaranty

D        Employment Agreement

E        Asset Purchase Note

F        Bill of Sale, Assignment and Assumption Agreement


                                 SCHEDULE 1.0

                         LIST OF SUBSIDIARY COMPANIES


Schweizerhall GmbH (SLR)

Schweizerhall Pharma International GmbH (SPH) (includes Branch Office in Powai,
Mumbai, India [SBB])

Schweizerhall Fine Chem International GmbH (SFC)

Schweizerhall France S.A. (SF)

Schweizerhall Holding Benelux B.V. (SHB)

International Pharmaceutical Chemicals B.V. (IPC)

Schweizerhall Pharma Ltd. (SPHK)

Schweizerhall Pte. Ltd. (SSI)