EXHIBIT 10.39
 
                        LICENCE & DEVELOPMENT AGREEMENT
                        -------------------------------

    
AGREEMENT, effective as of this 31st day of March 1994 (hereinafter referred to
as the "EFFECTIVE DATE"), by and between SCHEIN PHARMACEUTICAL, INC, 100 Campus
Drive, Florham Park, NY 07932, USA, (hereinafter referred to as "LICENSEE") and
ETHICAL HOLDINGS PLC, a company registered in the United Kingdom and having its
principal place of business at Corpus Christi House, 9 West Street,
Godmanchester, Cambridgeshire, PE18 8HG, England (hereinafter referred to as
"ETHICAL").

    
                               WITNESSETH THAT:
                               ----------------
    
WHEREAS, ETHICAL has acquired improved formulations of ******** *** **** *****
************** in man, combining active drug agents in a patented pharmaceutical
formulation capable of delivering the drug agents in a controlled release
manner after oral administration to man; and
    
WHEREAS, ETHICAL and LICENSEE have signed a Letter of Intent dated 28 February
1994 and LICENSEE desires to manufacture and/or have manufactured by ETHICAL and
sell the PRODUCT (hereinafter defined) in the TERRITORY; and
    
WHEREAS, ETHICAL owns valuable ETHICAL KNOW-HOW (hereinafter defined) and has
obtained PATENT RIGHTS (hereinafter defined) relating to pharmaceutical
formulations designed to provide controlled release of active constituents from
solid dosage forms; and


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WHEREAS, the parties desire to co-develop the PRODUCT and anticipate LICENSEE
will make the regulatory filing in the TERRITORY and the NDA will be held in the
LICENSEE's name and ETHICAL will be responsible for ensuring the regulatory
filings outside the TERRITORY.
    
NOW THEREFORE, in consideration of the foregoing and the mutual covenants and
conditions set forth herein, the parties hereto mutually agree as follows:
    
ARTICLE I. DEFINITIONS
- ----------------------
    
The following terms shall have the meanings set forth in this Article I:
    
A.   "ETHICAL" means ETHICAL HOLDINGS PLC, Corpus Christi House, 9 West Street,
     Godmanchester, Cambs, PE18 8HG.

B.   "LICENSEE" means SCHEIN PHARMACEUTICAL, INC, 100 Campus Drive, Florham
     Park, NY 07932, USA.

C.   "EFFECTIVE DATE" means 31st March 1994.
    
D.   "ETHICAL KNOW-HOW" means all confidential scientific and medical
     information, technical data and marketing studies in ETHICAL's possession
     or from time to time invented or developed or acquired by or on behalf of
     ETHICAL or under the control of ETHICAL (other than LICENSEE KNOW-HOW)
     relating specifically to the registration, marketing, manufacture, use or
     sale of PRODUCT including, but not limited to, toxicological,
     pharmacological, analytical and clinical data, bioavailability studies,
     product forms and formulations, control assays and specifications, methods
     of preparation and stability data and specifically including all
     information contained in all health registration dossiers to be filed in
     various countries of the European Community (EC) and shall further include
     all Third Party data which ETHICAL has access to and is free to disclose
     without restriction or

                                    Page 2                            March 1994

 
     additional compensation to such Third Party. Not withstanding the
     foregoing, the term `ETHICAL KNOW-HOW' shall not be deemed to refer to
     information and data of the type which would not be required to be
     maintained as confidential by either party pursuant to the provision of
     Subsections B1 or 2 of Article XV.
    
E.   "LICENSEE KNOW-HOW" means all confidential scientific and medical
     information and technical data from time to time, developed or acquired by
     or on behalf of LICENSEE (other than ETHICAL KNOW-HOW) relating
     specifically to the manufacture or use of the PRODUCT, including, but not
     limited to, toxicological, pharmacological, analytical and clinical data,
     bioavailability studies, product forms and formulations, control assays and
     specifications, methods of preparation and stability data, and specifically
     including all information contained in all health registration dossiers
     filed in the TERRITORY by the LICENSEE. Notwithstanding the foregoing, the
     term 'LICENSEE KNOW-HOW' shall not be deemed to refer to information and
     data of the type which would not be required to be maintained as
     confidential by either party pursuant to the provision of Subsections B1
     or 2 of Article XV.

F.   "PATENT RIGHTS" means the ** patent numbers ********** **********
     ********** ********** ********* and any and all ****** ****** *** ****
     ****** ****** patents and patent applications filed by or issued to ETHICAL
     and licensed or assigned to ETHICAL relating to controlled release
     formulations for oral administration in man, utilising the technology
     described in the above patent numbers, or the manufacture or use of them,
     together with any and all patents that may issue or may have issued
     therefrom, including any and all divisions, continuations, continuations-
     in-part, extensions, additions or reissues of or to any of the aforesaid
     patent applications.
     
G.   ******** ****** ******* ***** *** **** ****** ******.

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H.   "PRODUCT" means controlled release ******* ** ******** based on the PATENT
     RIGHTS and ETHICAL KNOW-HOW, containing ******** ************ according to
     the technology protected in the PATENT RIGHTS defined above to be used for
     human therapy and as further defined in Appendix 1.
     
I.   "FINISHED PRODUCT" means PRODUCT in final package in which the PRODUCT is
     sold.
     
J.   "TERRITORY" means the United States of America, including its territories 
     and possessions.
    
K.   "NET SALES" of the PRODUCT means the gross sales of FINISHED PRODUCT
     actually invoiced by the LICENSEE or LICENSEE's co-marketeer or sublicensee
     hereunder to INDEPENDENT THIRD PARTY, less the total ordinary and customary
     trade discounts (but not including cash discounts for prompt payment),
     rebate for inventory price protection covering the last 30 (thirty) days'
     sales by customers claiming such rebates to counter competitive pressures,
     excise taxes, other consumption taxes, customs duty and credits or
     allowances actually granted on account of rejection or return of FINISHED
     PRODUCT.
    
L.   "INDEPENDENT THIRD PARTY" means any party other than ETHICAL and LICENSEE
     and their subsidiaries or affiliates.
    
M.   "AGREEMENT" means this agreement duly signed by the Parties.
    
N.   "INTERNATIONAL DEVELOPMENT PROGRAMME" means the detailed schedule as set
     forth as Appendix 2 hereto which describes the planned development
     activities, project deliverables and timetable presently believed to be
     required to obtain regulatory approval in the TERRITORY and outside the
     TERRITORY to market, promote and distribute the PRODUCT in the TERRITORY
     and elsewhere.


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     The INTERNATIONAL DEVELOPMENT PROGRAMME may be amended from time to time by
     the mutual consent of the parties in light of periodic progress reviews and
     regulatory requirements. Neither party shall be required to perform
     development work with respect to the PRODUCT except as set forth in the
     INTERNATIONAL DEVELOPMENT PROGRAMME as from time to time in effect.
    
O.   "FDA" means the United States Federal Food and Drug Administration.
    
P.   "MARKETING AUTHORISATIONS" means the consent or approval of the FDA and any
     applicable comparable state agencies required to market or distribute the
     FINISHED PRODUCT in the TERRITORY.
    
Q.   ***** ***** *** ****** ****** ******* **** *********** *******
    
R.   "NDA" means the new drug application required to manufacture, market and
     sell the PRODUCT and the FINISHED PRODUCT in the TERRITORY.
    
References in this AGREEMENT to Articles Clauses and Appendices are, unless
otherwise stated, to Articles and Clauses of and Appendices to this AGREEMENT.
    
In this AGREEMENT the singular includes the plural and vice versa, the masculine
includes the feminine and vice versa and references to natural persons include
corporate bodies, partnership and unincorporated associations and vice versa.
    
The headings in this AGREEMENT are for ease of reference only and shall not
affect its construction or interpretation.
    
ARTICLE II. WARRANTY
- --------------------
    
A.   ETHICAL warrants that it is exclusive owner of all rights, title and
     interest in and to the PATENT RIGHTS and ETHICAL KNOW-HOW and that it is
     free to enter into this AGREEMENT and to carry out all of the provisions
     hereof including its

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                                    Page 5                            March 1994

 
     agreement to grant to LICENSEE an exclusive licence with the right to grant
     certain sub-licences with respect to the PRODUCT in the TERRITORY without
     any consents from any INDEPENDENT THIRD PARTIES.
    
B.   Except as expressly provided in this AGREEMENT ETHICAL warrants that it
     shall not, during the term of this AGREEMENT or any extension thereof make
     and/or manufacture, use, promote or sell or licence or sublicence the right
     to make or manufacture, use, promote or sell, directly or indirectly in or
     to the TERRITORY, controlled release formulations of ******** for oral
     administration to man based on the ******* ****** ****** or otherwise.
    
ARTICLE III. LICENCE GRANT
- --------------------------
    
A.   Subject to C below ETHICAL hereby grants to LICENSEE the exclusive right
     under the PATENT RIGHTS and ETHICAL KNOW-HOW with the right to grant sub-
     licenses, to make and/or manufacture, use, promote, market and sell the
     PRODUCT and FINISHED PRODUCT in the TERRITORY.
    
B.   For the avoidance of doubt ETHICAL shall have a continuing right to make,
     have made and use for its own investigational and development purposes (but
     not sell, directly or indirectly in, or to the TERRITORY) the PRODUCT in
     the TERRITORY. If ETHICAL or the LICENSEE acquires or develops rights to
     additional claims or indications for the PRODUCT, it shall make these
     available to the other party without additional compensation to ETHICAL or
     the LICENSEE, as the case may be, provided that as a condition precedent of
     making the additional claims or indications available, any additional
     development costs for such claims or indications are mutually agreed.


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C.   All proprietary rights and rights of ownership with respect to the PATENT
     RIGHTS, and ETHICAL KNOW-HOW shall at all times remain solely with ETHICAL
     and LICENSEE shall have no proprietary rights in or to the PATENT RIGHTS,
     and ETHICAL KNOW-HOW other than those specifically granted herein. All
     proprietary rights to LICENSEE KNOW-HOW belong to and shall at all times
     remain solely with LICENSEE, other than as specifically provided herein.

D.   LICENSEE shall exert its best efforts to commercialise and to create a
     demand for the PRODUCT and FINISHED PRODUCT in the TERRITORY under its own
     trademark and other private labels, consistent with the market potential
     for the PRODUCT in the TERRITORY determined by LICENSEE in a commercially
     reasonable manner including using commercially reasonable efforts to
     allocate sufficient resources to make the PRODUCT available in the
     TERRITORY to all potential customers. LICENSEE shall own and retain all
     right, title, and interest in and to any trademark or trademarks used by it
     in the TERRITORY in connection with the PRODUCT.

E.   LICENSEE shall have the right but not the obligation to pursue commercial
     arrangements with an INDEPENDENT THIRD PARTY to co-market the PRODUCT in
     the TERRITORY. At the request of the LICENSEE ETHICAL shall use its best
     efforts to assist LICENSEE in identifying a suitable INDEPENDENT THIRD
     PARTY.
    
F.   LICENSEE shall each year, promptly and diligently, **** *** * ****
     ********* ***** **** *** *** ** ******** ***** *** ******** ****
     ************ Any failure or delay in being assigned bulk substance quota
     shall not constitute a breach of this AGREEMENT provided such failure or
     delay was *** *** ** * ****** of LICENSEE's obligations under this Article
     III F.

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G.   LICENSEE will be responsible for ensuring that the sale and supply by
     LICENSEE of the PRODUCT and FINISHED PRODUCT within the TERRITORY is in
     accordance with the legal and regulatory requirements of the TERRITORY
     subject to compliance by ETHICAL with the relevant representations and
     obligations under this AGREEMENT which directly effect LICENSEE's ability
     to carry out its obligations under this Article III G.
    
H.   For the term of this AGREEMENT, ETHICAL agrees that it will not, directly
     or indirectly, market, sell, or distribute in the TERRITORY or develop or
     assist in the development for use, marketing, sale or distribution in the
     TERRITORY any PRODUCT or FINISHED PRODUCT except as provided in this
     AGREEMENT.
    
ARTICLE IV. INVITATION
- ----------------------
    
A.   Upon written invitation by ETHICAL, LICENSEE or its subsidiaries, as
     defined by the Companies Act of 1985 as amended, or LICENSEE's designee
     (the "Relevant Party"), may submit the terms upon which it is prepared to
     enter into a licence agreement or other commercial arrangement for the
     manufacture, marketing, sale distribution and/or use of the PRODUCT in
     countries outside the TERRITORY,
    
B.   The Relevant Party shall have sixty days from the date it is notified in
     writing of the invitation referred to in Article IV A within which to
     submit a formal written response. If a response is not received within such
     period, ETHICAL shall not be under any obligation to consider any response
     received subsequently.

C.   For a period of 2 (two) months, from and including the date on which
     ETHICAL receives the Relevant Party's response, or such other period as is
     mutually agreed

                                    Page 8                            March 1994
    

 
     in writing by ETHICAL and the Relevant Party, the parties shall negotiate
     in good faith, a license or other commercial arrangement in respect of the
     PRODUCT in the relevant country or countries.
    
D.   Should ETHICAL, during the period mentioned in Article IV C above, or such
     other period as is mutually agreed in writing by ETHICAL and the Relevant
     Party, have received a bona fide offer from an INDEPENDENT THIRD PARTY then
     ETHICAL shall provide the Relevant Party with the opportunity to meet such
     offer. If the Relevant Party fails, in ETHICAL's reasonable opinion, to
     meet the offer within a thirty day period of time, ETHICAL shall be under
     no obligation to negotiate further with the Relevant Party nor enter into
     any licence or commercial arrangement with regard to the TERRITORY then
     under discussion.
    
E.   On the expiration of the period mentioned in Article IV C above, or such
     other period as is mutually agreed in writing by ETHICAL and the Relevant
     Party, ETHICAL shall be under no obligation to negotiate further with the
     Relevant Party nor enter into any licence or other commercial arrangement
     with regard to the TERRITORY then under discussion.
    
ARTICLE V. PAYMENT PRIOR TO COMMERCIALISATION
- ---------------------------------------------
    
A.   In consideration of the development and technical support to the LICENSEE
     for the PRODUCT in the TERRITORY, and in consideration of the licence
     granted herein, the LICENSEE agrees to pay ETHICAL a total of US$420,000
     (four hundred and twenty thousand US dollars), ("LICENSEE payments"), of
     which ETHICAL has already received from the LICENSEE the sum of US$*******
     **** ******* *** ***** ******** ** ********. The remainder will be paid as
     follows:


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     a)   US$******* **** ******* *** ****** **** ******** ** ******** upon the
          signing of this AGREEMENT.
    
     b)   US$******* **** ******* * ***** **** ******** ** ******** upon the
          LICENSEE's completion of a pilot bioavailability study, in no less
          than 12 (twelve) subjects, demonstrating concentration time profiles
          for *** ******** of the PRODUCT satisfactory to progress the project
          onto a development programme proceeding to an NDA programme. In the
          event that scientific results do not indicate that the PRODUCT
          objectives can be obtained, LICENSEE may nominate an alternative
          project and apply the payment made under Article V A a) to such other
          project, less ETHICAL's out-of-pocket expenses for PRODUCT developed
          for the period starting 1st April 1994 through completion of the pilot
          biostudies described herein. On LICENSEE making such nomination the
          parties shall terminate this AGREEMENT effective immediately upon the
          giving of written notice.
    
B.   The parties further agree that the total international budget in respect of
     the INTERNATIONAL DEVELOPMENT PROGRAMME (Product development and clinical
     trials) is estimated by both parties to be US$8,000,000 (eight million US 
     dollars). The budget for the INTERNATIONAL DEVELOPMENT PROGRAMME in the
     TERRITORY is agreed to be fifty percent of the total international budget;
     and the budget for the INTERNATIONAL DEVELOPMENT PROGRAMME outside the
     TERRITORY is agreed to also be fifty percent of the total international
     budget. The parties further agree that the total international budget in
     respect of the INTERNATIONAL DEVELOPMENT PROGRAMME shall be shared equally
     and borne in money or monies worth equally by the parties as follows:
     

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     a)   The parties estimate ETHICAL's costs for international PRODUCT 
          development to be US$********** ***** ******* ** ********* SCHEIN will
          pay ETHICAL US$2,500,000 (two million five hundred thousand US
          dollars) subject to clause D below in eight quarterly instalments of
          US$******* ****** ******* *** ****** ******** **** ******* ** ********
          beginning 1st March 1994.
    
     b)   The parties estimate ETHICAL's and SCHEIN's costs for clinical trials
          under the INTERNATIONAL DEVELOPMENT PROGRAMME for the PRODUCT to be in
          the aggregate US$********* ****** ******* ** ********* These costs
          will be shared equally as such costs are incurred and as properly
          documented and invoiced to the other party.

C.   These payments are not to be regarded as a pre-payment against royalty as
     described under Article V. It is further understood these amounts are in
     respect of the period from the date hereof until the initial filing of the
     NDA.

D.   The quarterly installments due to ETHICAL under Clause B.a) above shall be
     subject to a review by the parties and may be so prospectively adjusted by
     LICENSEE one year from the Effective Date.
    
E.   Subject to Article XIII D (1) any additional costs incurred by either
     ETHICAL or the LICENSEE in carrying out further work in accordance with the
     INTERNATIONAL DEVELOPMENT PROGRAMME or clinical trials related to the
     PRODUCT shall be shared equally between ETHICAL and the LICENSEE. Any such
     additional amounts due from either party shall be paid upon receipt of
     proper documentation and invoice 30 (thirty) days following the close of
     each quarterly period of the party which is due such payment.


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F.   On a quarterly basis ETHICAL shall submit to LICENSEE an itemized statement
     of its progress, including a justification of costs (the "Statement"), for
     that quarter such statement to be compared against the INTERNATIONAL
     DEVELOPMENT PROGRAMME set forth in Appendix 2. Upon the request of the
     LICENSEE, but not exceeding once in any yearly period, ETHICAL shall obtain
     from Coopers and Lybrand, or such other reputable firm as from time to time
     is appointed as ETHICAL's auditors, an opinion on the Statement reasonably
     acceptable to the LICENSEE which it shall promptly send to the LICENSEE.
     The full cost of obtaining the opinion described herein shall be borne by
     the LICENSEE.
    
ARTICLE V1. RUNNING ROYALTIES DUE FROM LICENSEE
- -----------------------------------------------
    
LICENSEE shall pay to ETHICAL running royalties as follows:
    
A.   ***** **** *** ***** ******* ******** of the NET SALES.
    
B.   The LICENSEE shall promptly give written notice to ETHICAL of the date of
     first commercial sale of the PRODUCT in the TERRITORY.

C.   In the event the royalty rates set forth immediately above exceed those
     allowable by applicable law or governmental rule or regulation, they shall
     be so modified as to conform to the maximum royalty rate(s) allowable.
    
D.   The obligation to pay running royalties hereunder shall terminate with
     respect to sales of the PRODUCT which follow the termination of this
     AGREEMENT (except for those royalties contemplated by Article XIII C(2)
     hereof).
    
E.   Royalty terms may be subject to review and renegotiation in the event of
     intensive competitive pressures, and the parties undertake to conduct such
     review and renegotiation in good faith.


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ARTICLE VII. PAYMENT OF RUNNING ROYALTIES BY LICENSEE
- -----------------------------------------------------
    
A.   Running royalties due to ETHICAL under Article VI of this AGREEMENT shall
     accrue when the FINISHED PRODUCT is invoiced by the LICENSEE in accordance
     with the provisions below:
    
B.   Running royalties accruing hereunder shall be due and payable on the 45th
     (forty fifth) day following the close of each fiscal quarterly period of
     the LICENSEE.
    
C.   Running royalties accruing hereunder shall be paid in U.S. dollars to
     ETHICAL or ETHICAL's designee acceptable to ****** (such acceptance not to
     be unreasonably withheld), duly named by ETHICAL in written notice to
     LICENSEE.
    
D.   Running royalties accruing hereunder shall be paid in United States
     Dollars.
    
E.   If, at any time, legal restrictions in the TERRITORY prevent the prompt
     payment of running royalties or any portion thereof accruing hereunder, the
     parties shall meet to discuss suitable and reasonable alternative methods
     of reimbursing ETHICAL the amount of such running royalties.
    
ARTICLE VIII. ROYALTY REPORTS BY LICENSEE
- -----------------------------------------
    
A.   Each payment of running royalties made to ETHICAL hereunder shall be
     accompanied by a written report, prepared and signed by a financial officer
     of the LICENSEE, showing the aggregate NET SALES for the quarterly period
     for which payment is being made. In the event that no running royalty is
     due to ETHICAL hereunder for any such quarterly period, the LICENSEE shall
     so report.

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B.   The LICENSEE shall maintain and keep for a period of at least 3 (three)
     years or, if shorter, for such period as required by applicable U.S. 
     federal or state law, complete and accurate records in sufficient detail to
     enable any running royalties which shall have accrued hereunder to be
     determined.
    
C.   Subject to Article VIIIB above, and upon the request of ETHICAL, but
     not exceeding once in any one yearly period, the LICENSEE shall permit an
     independent public accountant, selected by ETHICAL and acceptable to the
     LICENSEE, which acceptance shall not be unreasonably withheld, to have
     access (subject to reasonable confidentiality undertakings) to such of the
     records of the LICENSEE as may be necessary to verify the accuracy of the
     royalty reports and payments submitted to ETHICAL hereunder. Any such
     inspection of the LICENSEE's records shall be at ETHICAL's expense, except
     that if any such inspection reveals a deficiency in an amount of running
     royalty actually paid to ETHICAL hereunder in any quarterly period of **
     ***** ******** or more of the amount of such running royalty actually due
     to ETHICAL hereunder, then the expense of such inspection shall be borne by
     the LICENSEE instead of by ETHICAL. Any amount of deficiency shall be paid
     promptly to ETHICAL.
    
ARTICLE IX. MONIES DUE FROM ETHICAL
- -----------------------------------
    
A.   ETHICAL shall pay to the LICENSEE *** ******* ******** of any running
     royalties actually received by ETHICAL (or its designee) from INDEPENDENT
     THIRD PARTY under a licence, supply or distribution agreement or other
     commercial arrangement relating to the sale of the PRODUCT outside of the
     TERRITORY.
    

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B.   On receipt of notice by ETHICAL of the date of first commercial sale of the
     PRODUCT outside the TERRITORY ETHICAL shall promptly give written notice of
     the same to LICENSEE,
    
C.   The obligation to pay running royalties hereunder shall terminate following
     termination of this Agreement (except as contemplated by Article XIII
     hereof).

ARTICLE X. PAYMENT OF MONIES DUE FROM ETHICAL
- ---------------------------------------------
    
A.   The percentage of running royalties due to the LICENSEE under Article IX of
     this AGREEMENT shall accrue as and when running royalties are actually
     received by ETHICAL in respect of PRODUCT sales outside the TERRITORY and
     in accordance with the provisions below:
    
B.   The percentage of running royalties accruing hereunder shall be due and
     payable on the 45th (forty fifth) day following the close of each fiscal
     quarterly period of ETHICAL
    
C.   The percentage of running royalties accruing hereunder shall be paid in
     **** ******* to the LICENSEE or the LICENSEE's designee, duly named by the
     LICENSEE in written notice to ETHICAL.
    
D.   The percentage of running royalties accruing hereunder shall be paid in
     ****** ****** ********

E.   If, at any time, legal restrictions prevent the prompt payment of monies or
     any portion thereof accruing hereunder, the parties shall meet to discuss
     suitable and reasonable alternative methods of reimbursing the LICENSEE the
     amount of such percentage of running royalties.

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ARTICLE XI. ROYALTY REPORTS BY ETHICAL
- --------------------------------------

A. ETHICAL shall maintain and keep for a period of at least 3 (three) years or,
   if shorter, for such period as required by applicable law, complete and
   accurate records in sufficient detail to enable any percentage of running
   royalties which shall have accrued hereunder to be determined.

B. Subject to Article XI A above, and upon the request of the LICENSEE, but not
   exceeding once in any one yearly period, ETHICAL shall permit an independent
   public accountant, selected by the LICENSEE and acceptable to ETHICAL, which
   acceptance shall not be unreasonably withheld, to have access subject to
   reasonable confidentiality undertakings toy such of the records of ETHICAL as
   may be allowable, under ETHICAL's bona fide agreement in respect of the
   PRODUCT with INDEPENDENT THIRD PARTIES, and necessary to verify the accuracy
   of the royalty reports and payments submitted to the LICENSEE hereunder. Any
   such inspection of ETHICAL's records shall be at the LICENSEE's expense,
   except that if any such inspection reveals a deficiency in an amount of the
   percentage of running royalty actually paid to the LICENSEE hereunder in any
   quarterly period of 5% (five percent) or more of the amount of such
   percentage of running royalty actually due to the LICENSEE hereunder, then
   the expense of such inspection shall be borne by ETHICAL instead of by the
   LICENSEE. Any amount of deficiency shall be paid promptly to the LICENSEE.

ARTICLE XII. REGISTRATION OF THE LICENSED PRODUCT 
- -------------------------------------------------

A. ETHICAL and LICENSEE have agreed that PRODUCT development should progress as
   specified in Appendix 2.

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B. LICENSEE shall bear the cost of all application fees to government
   authorities for MARKETING AUTHORISATIONS including, without limitation, new
   drug applications ("NDA") filed with FDA or any other fees concerning
   approvals from government authorities necessary to commercialise the PRODUCT
   in the TERRITORY. The Marketing Authorisations and all NDA's in the TERRITORY
   shall be the sole and exclusive property of LICENSEE.

ARTICLE XIII. DURATION - TERMINATION
- ------------------------------------ 

A. DURATION
   --------    

   This AGREEMENT shall come into force as of the EFFECTIVE DATE and remain in
   force for the term of any patents issued in the TERRITORY relating to the
   PRODUCT and included in the PATENT RIGHTS or for 16 (sixteen) years from
   first commercial sale, whichever is the longer.

   This AGREEMENT shall automatically be extended thereafter for successive 2
   (two) year terms unless either party notifies the other of its decision not
   to renew this AGREEMENT at least 12 (twelve) months prior to the commencement
   of any such renewal term. Following any such termination LICENSEE shall have
   the right to manufacture and distribute the PRODUCT in the TERRITORY on a
   non-exclusive basis for which LICENSEE would pay to ETHICAL a KNOW-HOW charge
   equal to ** **** ******** of NET SALES of the PRODUCT in the TERRITORY.

B. TERMINATION FOR CAUSE
   ---------------------

   Either party hereto may terminate this AGREEMENT upon 90 (ninety) days
   written notice calculated from the date of receipt of such notice to the
   other party of its intention to do so in the event of violation or breach of
   any of the material provisions

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                            Page 17                                  March 1994

 
   of this AGREEMENT. Should, however, the other party remedy the default upon
   which said notice is based within the said 90 (ninety) day period, the notice
   shall be without effect and this AGREEMENT shall continue in full force and
   effect.

C. (1) In the event this AGREEMENT is terminated prior to the date of its
       expiration in the TERRITORY due to fault of LICENSEE, LICENSEE shall
       promptly make an accounting to ETHICAL of the inventory of all PRODUCT
       which it has on hand in the TERRITORY, if any, as of the date of such
       termination and said parties shall thereafter have the right for a period
       of 6 (six) months after said termination to sell such inventory of
       PRODUCT provided that the NET SALES thereof shall be subject to the
       royalty provisions of Article V and so payable to ETHICAL. Thereafter,
       any remaining inventory of PRODUCT shall be disposed of by mutual
       agreement in accordance with regulatory requirements. Articles IX, X and
       XI shall survive such termination.

   (2) In the event this AGREEMENT is terminated prior to the date of its
       expiration due to fault of ETHICAL, LICENSEE shall have the unrestricted
       right to continue to use and sublicense the PATENT RIGHTS and ETHICAL
       KNOW-HOW RIGHTS, and to make, manufacture, use, promote and sell the
       PRODUCT and FINISHED PRODUCT in the TERRITORY for the duration as defined
       in Article IX A above, in which case Article VI A shall read as if it
       contained the figure of **** **** ***** **** ********. Articles IX, X and
       XI shall survive such termination.

D. (1) In the event that the parties reasonably believe a material increase,
       over and above the eight million US dollars that is presently estimated
       to be required to complete the INTERNATIONAL DEVELOPMENT PROGRAMME,
       and/or a material amount of additional time than is presently estimated
       to be required to complete the INTERNATIONAL DEVELOPMENT PROGRAMME is
   
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                                 Page 18                             March 1994

 
             necessary to complete the INTERNATIONAL DEVELOPMENT PROGRAMME and
             ensure successful commercialisation of the PRODUCT, the parties
             shall, within two weeks of becoming aware of the same, meet to
             discuss how best to proceed such discussions to include whether to
             continue with the INTERNATIONAL DEVELOPMENT PROGRAMME or whether to
             terminate this AGREEMENT. Should the parties fail within two months
             thereof to agree on how best to proceed, such agreement to be
             evidenced in writing and signed by both parties, the LICENSEE may
             terminate this AGREEMENT, effective immediately upon the giving of
             written notice. In the event of such termination, and subject to
             reasonable compensation arrangements to LICENSEE mutually
             acceptable to LICENSEE and ETHICAL, ETHICAL shall have the right in
             the TERRITORY to use, including licence to any INDEPENDENT THIRD
             PARTY, any ETHICAL and/or LICENSEE KNOW-HOW. The compensation
             arrangements shall ******* ** **** *** ** * ******* ****** ** ***
             ****** ******** **** ** *** ******** ***** **** ********** ****** *
             ********** *** ** * ******* ** ****** ******** ** ****** *******
             ******** *** **** ** *********** ***** ***** ** ******* ** *******
             ** *** ***** ** *** ******* ** *** ********** Articles IX, X and XI
             shall survive such termination. For *** ********* ** ***** ** **
             ****** ****** **** ********* ***** ** *** **** ******** **** *** **
             ** ********* ** ******* **** * ******* *** ********* ***** *** **
             ******* ** **** ************ **********

         (2) In the event that MARKETING AUTHORISATIONS for the PRODUCT are
             refused LICENSEE shall immediately notify ETHICAL of the same and
             either party may terminate this AGREEMENT, effective immediately
             upon the giving of written notice. Articles IX, X and XI shall
             survive such termination.


* redacted pursuant to confidential treatment request


                                 Page 19                              March 1994

 
   (3) If, within 6 (six) months after receipt of MARKETING AUTHORISATIONS for
       the PRODUCT in the TERRITORY, LICENSEE has not commenced commercial sales
       of the PRODUCT, then ETHICAL may terminate the AGREEMENT effective
       immediately upon giving notice to LICENSEE. Articles IX, X and XI shall
       survive such termination.

   (4) Should LICENSEE proceed to commercialise the PRODUCT in the TERRITORY and
       then choose to abandon commercialisation of the PRODUCT in the TERRITORY
       for any reasons, then LICENSEE shall promptly notify ETHICAL of such
       abandonment of commercialisation, and ETHICAL may terminate this
       AGREEMENT, effective immediately upon giving notice to LICENSEE. Articles
       IX, X and XI shall survive such termination.

   (5) Should LICENSEE make the determination, for any reason, after receipt of
       MARKETING AUTHORISATIONS for the PRODUCT, that it does not intend to
       commercialise the PRODUCT in the TERRITORY, then LICENSEE shall promptly
       notify ETHICAL of the same and ETHICAL may terminate this AGREEMENT
       immediately upon giving notice to LICENSEE. Articles IX, X and XI shall
       survive such termination.

E. Upon any early termination of this AGREEMENT pursuant to Article XIII B, C 1
   or D, ETHICAL shall have the continuing right to use, including license to
   any Third Party, on a non-exclusive basis, any LICENSEE KNOW-HOW, with the
   exception of methods of preparation and stability data and the health
   registration dossiers filed in the TERRITORY, developed by or for the
   LICENSEE with respect to the PRODUCT.                            

                              Page 20                                 March 1994

 
F. Should this AGREEMENT be terminated before LICENSEE has made all of the 
   payments as set out under Articles V and XII the amount of continuing        
   royalties payable by ETHICAL under this Article XIII shall be                
   accordingly reduced.                                                         
                                                                                
G. In the event any of the patents included in the PATENT RIGHTS is found       
   by a court of applicable jurisdiction to be invalid or unenforceable in      
   the TERRITORY and as a result thereof an INDEPENDENT THIRD PARTY would       
   be entitled to manufacture or distribute and thereafter commercialises       
   the PRODUCT in the TERRITORY utilising any technology covered by the         
   PATENT RIGHTS, then LICENSEE in its discretion may terminate this            
   AGREEMENT or, at LICENSEE's election, continue this AGREEMENT in full        
   force and effect **** * ********* ** ******* ********* ** *** *** ****       
   **** *******. Such termination would not be subject to Article XIII C        
   (2) of this AGREEMENT.                                                       
                                                                                
H. Termination of this AGREEMENT, due to the fault of either party, shall       
   be without prejudice to any other rights or remedies then or thereafter      
   available to either party under this AGREEMENT or otherwise.                 
                                                                                
I. The rights granted either party to terminate this AGREEMENT prior to         
   the expiration of its term shall not be affected in any way by that          
   party's waiver of or failure to take action with respect to any              
   previous default hereunder.                                                  
                                                                                
ARTICLE XIV. PRODUCT MANUFACTURE BY LICENSEE                                    
- --------------------------------------------                                    

LICENSEE undertakes to manufacture or have manufactured PRODUCT and             
FINISHED PRODUCT in the TERRITORY and shall ensure such manufacturing           
shall comply with prevailing "Good Manufacturing Practice" for sale of the      
PRODUCT and FINISHED PRODUCT in the TERRITORY. LICENSEE may request             
ETHICAL to supply the ********* ******* ********* required in connection      
with the manufacture of the PRODUCT and FINISHED PRODUCT.                       

* redacted pursuant to confidential treatment request
                                                                                
                            Page 21                                   March 1994
      

 
ARTICLE XV. INFORMATION TRANSFER: CONFIDENTIALITY AND COOPERATION
- -----------------------------------------------------------------

A. Within 30 (thirty) days following the signing of this AGREEMENT, ETHICAL
   shall provide to LICENSEE copies of relevant ETHICAL KNOW-HOW which has not
   previously been provided to the LICENSEE.

B. Each party shall hold in strict confidence any tangible information relating
   to the PRODUCT marked confidential received from the other party (or oral
   information which is reduced to tangible form within 30 (thirty) days of
   disclosure and noted to be confidential), unless such information:

 1.   Is already in its possession.
    
 2.   Is already in the public domain or knowledge at the time of disclosure or
      later comes into the public domain or knowledge without fault on the part
      of the recipient.

 3.   Is subsequently disclosed to the recipient by a third party who did not
      acquire it in confidence from the other party.

 4.   Is required to be disclosed in connection with any legal proceedings or in
      order to obtain permission to manufacture or market the PRODUCT in the
      TERRITORY.

 5.   Is disclosed with the prior written consent of the other party, such
      consent not to be unreasonably withheld.
    
   This provision shall remain valid for a period of seven years after
   termination of this AGREEMENT.


                                 Page 22                             March 1994

 
C. For the period starting with the EFFECTIVE DATE and ending with the first
   commercial sale of the PRODUCT in the TERRITORY, ETHICAL shall report to
   LICENSEE on a monthly basis the progress of the INTERNATIONAL DEVELOPMENT
   PROGRAMME, as defined in Appendix 2, of the PRODUCT. LICENSEE will provide a
   project update to ETHICAL on a quarterly basis for the period starting with
   the EFFECTIVE DATE and ending with the first commercial sale of the PRODUCT
   in the TERRITORY. ETHICAL will use its best efforts to carry out the
   INTERNATIONAL DEVELOPMENT PROGRAMME in accordance with the timetable set
   forth in Appendix 2. ETHICAL will carry out the INTERNATIONAL DEVELOPMENT
   PROGRAMME in accordance with applicable laws and regulations of the
   TERRITORY, including, without limitation, FDA regulations. All costings
   included in the INTERNATIONAL DEVELOPMENT PROGRAMME shall be jointly reviewed
   every * ***** ****** by ETHICAL and LICENSEE.

D. ETHICAL will on a continuous basis provide to LICENSEE any ETHICAL KNOW-HOW
   developed, information acquired or development planned in relation to the
   PRODUCT and all improvements and modifications of the PRODUCT from time to
   time invented, developed or acquired by or on behalf of ETHICAL. Prior to the
   date of first commercial sale of the PRODUCT in the TERRITORY, LICENSEE shall
   provide to ETHICAL a summary of its marketing plans for the PRODUCT.

E. ETHICAL shall make available to LICENSEE, on a reasonable consultation basis
   without charge to LICENSEE, such advice of its technical personnel as may
   reasonably be requested by LICENSEE in connection with the PRODUCT, it being
   understood that LICENSEE will reimburse all reasonable out-of-pocket expenses
   incurred by ETHICAL attending meetings requested by LICENSEE.

* redacted pursuant to confidential treatment request

                                 Page 23                             March 1994

 
F. LICENSEE shall disclose to ETHICAL and ETHICAL shall disclose to LICENSEE all
   reports or other knowledge they may possess with respect to "adverse drug
   experiences" (as defined in regulations promulgated by the FDA), mis-
   labelling, stability failures or microbiological contamination with respect
   to the PRODUCT (whether occurring within or outside of the TERRITORY) within
   10 (ten) days of becoming aware of same. With respect to "serious adverse
   drug experiences" (as defined in 21 CFR $312.32 and $314.80 promulgated by
   the FDA), LICENSEE shall disclose to ETHICAL and ETHICAL shall disclose to
   LICENSEE all reports and other knowledge they may possess as soon as possible
   and in no event later than 2 (two) business days of the receipt of such
   report or notification of the serious adverse drug experience. The content of
   such disclosure shall comply with all FDA regulations applicable to
   notification to the FDA with respect to such matters. Each party shall
   promptly deliver to the other, copies of all correspondence which such party
   may send to, or receive from, the FDA with respect to the PRODUCT.

G. During the term of this AGREEMENT, at least semi-annually, ETHICAL shall
   furnish to LICENSEE any ETHICAL KNOW-HOW and any other information and data
   developed or acquired by or under the control of ETHICAL with respect to the
   PRODUCT. ETHICAL hereby acknowledges and agrees that LICENSEE may use, within
   the TERRITORY, all such ETHICAL KNOW-HOW and information and data without
   restriction and without additional compensation to ETHICAL, other than as
   provided in this AGREEMENT, to make, have made, use and sell the PRODUCT in
   the TERRITORY.

H. During the term of this AGREEMENT, at least semi-annually, LICENSEE shall
   furnish to ETHICAL any LICENSEE KNOW-HOW and any other information and data
   developed or acquired by or under the control of LICENSEE with respect to the
   PRODUCT, and ETHICAL may use outside the TERRITORY all such


                                 Page 24                             March 1994

 
   LICENSEE KNOW-HOW and information and data without restriction and without
   additional compensation to LICENSEE, other than provided for in this
   Agreement, subject to the following sentence. LICENSEE shall be under no
   obligation to provide any LICENSEE KNOW-HOW, information or data to ETHICAL
   hereunder if the disclosure of such would be in violation of any bona fide
   agreement with any THIRD PARTY and such violation can be proved by LICENSEE.

ARTICLE XVI. INFRINGEMENT
- -------------------------

A. (1) ETHICAL and LICENSEE each agree to notify the other in writing of any
       alleged infringement or potential infringement of any PATENT RIGHTS or
       any information or allegations impacting on the validity of any such
       PATENT Rights, in the TERRITORY promptly after becoming aware of the
       same.

   (2) Upon the giving of such notice, ETHICAL and LICENSEE shall immediately
       consult together to decide what steps shall be taken to prevent or
       terminate such infringement, and the parties shall take such steps as
       they shall so agree, including the institution of legal proceedings where
       necessary in the name of one of the parties or the joint names of ETHICAL
       and LICENSEE as appropriate, in which event costs and expenses incurred
       and damages recovered, shall be shared in such proportions as the parties
       may agree.

   (3) If, within 30 (thirty) days after such consultation the parties have
       failed to agree on the steps to be taken or the proportions in which
       costs and damages should be shared, ETHICAL may take such steps as it may
       decide and all damages recovered in any proceedings shall belong to
       ETHICAL.

   (4) If within 60 (sixty) days after such consultation, ETHICAL does not take
       action against an alleged infringer or potential infringer or has failed
       to notify LICENSEE of its intent to commence an action to terminate the
       alleged

                                   Page 25                           March 1994

 
       infringement or potential infringement, then LICENSEE shall have the
       right to commence such action on its own behalf at its own cost and
       expense and to use ETHICAL's name in connection therewith, in which case
       any recoveries shall inure to the benefit of LICENSEE.
    
   (5) LICENSEE and ETHICAL shall each provide all such assistance and cooperate
       including the furnishing of documents and information as may be required
       to give effect to such joint or independent action as may be taken under
       Article XVI (2), (3) and (4).

B. (1) ETHICAL hereby represents that, to the best of its knowledge, none of the
       PATENT RIGHTS or ETHICAL KNOW-HOW infringe on the patent or other legally
       protected proprietary rights of any INDEPENDENT THIRD PARTY, and it has
       not received any notice or claim of any such infringement worldwide.
       ETHICAL agrees to hold LICENSEE harmless from any judgements, losses or
       costs (including reasonable attorneys' fees) incurred in the event a
       claim or legal action is asserted against LICENSEE to the effect that the
       manufacture, use or sale of the PRODUCT infringes the patent rights or
       other legally protected proprietary rights of any INDEPENDENT THIRD
       PARTY.
    
   (2) ETHICAL and LICENSEE shall each give to the other prompt written notice
       of any claim or action made against either of them alleging that any of
       the PATENT RIGHTS infringe the rights of an INDEPENDENT THIRD PARTY and
       arising from the manufacture, use or sale of the PRODUCT in the
       TERRITORY. ETHICAL and LICENSEE agree to cooperate and collaborate with
       each other in undertaking a full investigation of the situation and in
       taking such action as they shall agree is appropriate in the
       circumstances.

                                 Page 26                            March 1994  

 
C. Subject to Article XVI A Clauses (2) and (4) ETHICAL shall be solely
   responsible for and bear the cost of the prosecution and maintenance of the
   PATENT RIGHTS.

D. The provisions of this Article XVI shall survive termination of this
   AGREEMENT.
    
ARTICLE XVII. TRANSFER OF RIGHTS AND OBLIGATIONS
- ------------------------------------------------

This AGREEMENT, in whole or in part, shall not be assignable by either party
hereto to any INDEPENDENT THIRD PARTY without the prior written consent of the
other party hereto except that either party may assign this AGREEMENT to an
affiliated company or the successor or assignee of substantially all of its
business. It is expressly understood and agreed by the parties hereto that the
assignor of any rights hereunder shall remain bound by its duties and
obligations hereunder.

ARTICLE XVIII. DISCLOSURE
- -------------------------

ETHICAL and LICENSEE shall have the right, subject to the written approval of
the other, to disclose to any INDEPENDENT THIRD PARTY in connection with any
announcement, news release, or for any other reason the existence of this
AGREEMENT entered into with the LICENSEE, but not the terms hereof.
Notwithstanding the foregoing, each party shall have the right to make such
disclosures relating to this AGREEMENT as may be required by applicable laws and
regulations.

ARTICLE XIX. FORCE MAJEURE
- --------------------------

ETHICAL and LICENSEE shall not be liable for delays if such delays are due to
force majeure case, such as strikes, disputes with workmen, failure of supplies
from ordinary sources, fire, floods earthquakes, governmental regulation against
the aims of this AGREEMENT, war, legislation or any other cause, either similar
or dissimilar to the foregoing, beyond the reasonable control of the parties
which cannot be overcome by due diligence.

                                   Page 27                           March 1994

 
ARTICLE XX NOTICES
- ------------------

Any notice or report required or permitted to be given or made under this
AGREEMENT by either party to the other shall be in writing, sent by hand or by
registered or express mail or courier, postage prepaid, telex or telefax,
addressed to such other party at its address indicated at the beginning of this
AGREEMENT or to such other address as the addressee shall have last furnished in
writing to the addressor, and shall be effective upon receipt by the addressee.

ARTICLES XXI. FURTHER ASSURANCES
- --------------------------------

From and after the date hereof, without further consideration, ETHICAL and
LICENSEE shall, from time to time during the term of this AGREEMENT, upon
request by the other, perform all actions and execute, acknowledge and deliver
all such further documents or instruments as may be required to give effect to
the purpose and intent of this AGREEMENT. Without limiting the generality of the
foregoing, the obligations of ETHICAL and LICENSEE are undertaken with a
principle objective of complying with all pertinent provisions of applicable
law, orders and regulations relating to the manufacture, use or sale in the
TERRITORY of pharmaceutical products; the obligation of ETHICAL shall include
the attendance by representatives of ETHICAL, upon reasonable advance request by
LICENSEE, at meetings with the FDA with respect to the NDA. All out-of-pocket
expenses incurred in attending such meetings will be paid by LICENSEE.


                                 Page 28                             March 1994

 
ARTICLE XXII. SURVIVAL OF REPRESENTATIONS WARRANTIES AND AGREEMENT
- ------------------------------------------------------------------

Except as otherwise specifically provided in this AGREEMENT, all
representations, warranties and agreements contained in this AGREEMENT shall
survive the execution and delivery of this AGREEMENT and remain in full force
and effect regardless of any investigation made by or on behalf of either
ETHICAL or LICENSEE.

ARTICLE XXIII. ARBITRATION
- -------------------------

All disputes arising in connection with the AGREEMENT shall be settled under the
Rules of Conciliation and Arbitration of the International Chamber of Commerce
by one or more arbitrator in accordance with the said RULES, as follows:
      
Each of the parties shall designate its arbitrator within 15 (fifteen) days from
notification by registered letter. The two arbitrators thus designated shall
designate a third arbitrator within 30 days from designation of the second
arbitrator, the said third arbitrator shall preside over the arbitration court.
Arbitration should be held in London if ETHICAL initiates the request and if
LICENSEE initiates the request arbitration should be held in New York.

ARTICLE XXIV. DISCLAIMER OF AGENCY
- ----------------------------------    
 
The parties acknowledge that each of LICENSEE and ETHICAL are independent
contractors and nothing herein contained shall be deemed to create any
relationship in the nature of agency, joint venture, partnership or similar
relations between LICENSEE and ETHICAL.


                                   Page 29                           March 1994

 
ARTICLE XXV. SEVERABILITY
- -------------------------

Whenever possible, each provision of this AGREEMENT shall be interpreted in such
manner as to be effective and valid under applicable law, but if any provision
of this AGREEMENT should be prohibited or invalid under applicable law, such
provision shall be ineffective to the extent of such invalidity without
invalidating the remainder of such provision or the remaining provisions of this
AGREEMENT to the extent such modification does not impair or change the intent
of the parties hereto.

ARTICLE XXVI. PARAGRAPH HEADINGS
- --------------------------------

The subject headings of the Articles of this AGREEMENT are included for the
purposes of convenience only, and shall not affect the construction or
interpretation of any of its provisions.

ARTICLE XXVII. ENTIRE AGREEMENT: AMENDMENT
- ------------------------------------------

This AGREEMENT contains the entire understanding of the parties with respect to
the matters contained herein and supersedes any previous agreements and may be
altered or amended only by a written instrument duly executed by both parties
hereto.

                                 Page 30                             March 1994

 
IN WITNESS WHEREOF, the parties hereto have executed this AGREEMENT in duplicate
originals.
    
ETHICAL HOLDINGS PLC                SCHEIN PHARMACEUTICAL, INC
- --------------------                --------------------------
          
BY: /s/ Dr. G. W. Guy                 BY: /s/ Steven Getraer   
   ----------------------------          -------------------------------
             
PRINT: Dr. G. W. Guy                  PRINT: Steven Getraer       
      -------------------------             ----------------------------
     
DATE: 31ST MARCH 1994                 DATE: 31ST MARCH 1994
     -------------------------             ----------------------------
             
                                 Page 31                             March 1994

 
                        APPENDIX 1 - PRODUCT DEFINITION
                        ------------------------------- 
    
**** ******* **** ** * **** ***** *********** ** ********* ********* ********
*** *********** ** ** ***** ***** ********* ********** **** ********* ** **
****** ** *** ******* ***** ********* *** ******* ** *** ***********
*************** *****


* redacted pursuant to confidential treatment request




 
               APPENDIX 2 - INTERNATIONAL DEVELOPEMENT PROGRAMME

                                 [     *     ]


      * Entire page redacted pursuant to confidential treatment request.

 
                         [            *             ]






 
      * Entire page redacted pursuant to confidential treatment request.