***REDACTED FOR CONFIDENTIALITY***


                                    AGREEMENT

                                  BY AND AMONG

                         DUPONT PHARMACEUTICALS COMPANY

                           JANSSEN PHARMACEUTICA, N.V.

                                       AND

                          NEUROCRINE BIOSCIENCES, INC.







                                        i
                   [***]  CONFIDENTIAL TREATMENT REQUESTED

                                TABLE OF CONTENTS

ARTICLE I - DEFINITIONS .....................................................2-8

ARTICLE II - LICENSE GRANTS ...................................................8
  2.1  Common Interest Patent Cross License....................................8
  2.2  Special Interest Patent Cross License...................................9
  2.3  Other Patent Licenses..................................................11
  2.4  Initial Payments License...............................................12

ARTICLE III - PRODUCT DEVELOPMENT AND COMMERCIALIZATION.......................13
  3.1  Independent Programs...................................................13
  3.2  No Diligence...........................................................13
  ***  ****************************...........................................**

ARTICLE IV - PAYMENTS ........................................................14
   4.1  License Fees Payable to DPC...........................................14
   4.2  Milestone Payments to DPC.............................................15
   4.3  Milestone Payments to Janssen.........................................16
   4.4  Milestone Payment Timing..............................................17
   4.5  DPC Earned Royalties for X-Products...................................18
   4.6  Janssen and Neurocrine Earned Royalties For Products..................19
   4.7  Term For Royalty Payment..............................................20
   4.8  Third Party Patents...................................................20
   4.9  Compulsory License....................................................21
   4.10 Currency Restrictions.................................................21
   4.11 Royalty Reports and Records...........................................21
   4.12 Taxes ................................................................23
   4.13 Neurocrine Receptor License Payment...................................23
   4.14 Janssen or Neurocine Obligation of Payment............................23

************************** ...................................................**
  ***   ****************************..........................................**
  ***   ****************************..........................................**
  ***   ****************************..........................................**
  ***   ****************************..........................................**
  ***   ****************************..........................................**
  ***   ****************************..........................................**

ARTICLE VI - RELEASE .........................................................27
  6.1  Release ...............................................................27
  6.2  General Release........................................................28
  6.3  No Admission...........................................................28
  6.4  Remedies ..............................................................29


                                       iii
ARTICLE VII - CONFIDENTIALITY ................................................30
  7.1 Confidentiality; Exceptions.............................................30
  7.2 Authorized Disclosure...................................................31
  7.3 Survival ...............................................................31
  7.4 Public Announcements....................................................31

ARTICLE VIII - INTELLECTUAL PROPERTY .........................................32
  8.1 Ownership of Patents....................................................32
  8.2 Patent Filings on N-Compounds or N-Products.............................32
  8.3 Patent Filings..........................................................32
  8.4 Infringement by Third Parties...........................................34
  8.5 Defense and Settlement of Third Party Claims............................35
  8.6 Patent Assignment.......................................................36
  8.7 Notices Relating to the Act.............................................36
  8.8 Authorization Relating to Patent Term Extension.........................36

ARTICLE IX - INDEMNIFICATION .................................................37
  9.1 Indemnification.........................................................37
  9.2 Procedure...............................................................38

ARTICLE X - TERM AND TERMINATION .............................................38
  10.1 Term ..................................................................38
  10.2 Material Breach .......................................................38
  10.3 Bankruptcy.............................................................39
  10.4 Survival ..............................................................40

ARTICLE XI - DISPUTE RESOLUTION ..............................................41
  11.1 Dispute Resolution and Arbitration.....................................41
  11.2 Arbitration............................................................41

ARTICLE XII - REPRESENTATIONS AND WARRANTIES; EXCLUSIVITY.....................41
  12.1 Representations and Warranties.........................................41
  12.2 Patent Warranties......................................................42
  12.3 Exclusivity............................................................42

ARTICLE XIII MISCELLANEOUS ...................................................43
  13.1 Relationship of Parties................................................43
  13.2 Counterparts...........................................................43
  13.3 Headings ..............................................................43
  13.4 Binding Effects........................................................43
  13.5 Assignment.............................................................43
  13.6 Amendment and Waiver...................................................43
  13.7 Governing Law..........................................................44
  13.8 Severability...........................................................44
  13.9 Entire Agreement.......................................................44


  13.10 Advise of Counsel.....................................................44
  13.11 Consents Not Unreasonably withheld....................................44
  13.12 Retained Rights.......................................................44
  13.13 Force Majeure.........................................................45
  13.14 Further Actions.......................................................45
  13.15 No trademark Rights...................................................45
  13.16 Notices ..............................................................45
  13.17 Waiver ...............................................................47
  13.18 Compliance with Laws..................................................47

EXHIBIT A - DISPUTE RESOLUTION


                                        1

                                    AGREEMENT
This  Agreement is made  effective as of the 28th day of September,  1999 by and
among DuPont  Pharmaceuticals  Company, a Delaware general  partnership having a
principal place of business at 974 Centre Road,  Wilmington,  Delaware  ("DPC"),
Neurocrine Biosciences,  Inc., a Delaware corporation having its principal place
of business at 10555 Science Center Drive,  San Diego,  CA 92121  ("Neurocrine")
and Janssen  Pharmaceutica,  N. V., a Belgium  corporation  having its principal
place of business at Turnhoutseweg 30, 2340 Beerse,  Belgium  ("Janssen").  DPC,
Neurocrine  and  Janssen  are  each  referred  to by  name or as a  "Party"  or,
collectively, as "Parties".

     RECITALS  WHEREAS,  The Parties each have on-going research in the field of
corticotropin-releasing  factor (CRF)  receptor  antagonists  and have developed
certain technology in this field.

     WHEREAS,  the  Parties  each  have  an  interest  in  various  intellectual
properties  in the  field of CRF  receptor  antagonists  which  is a  source  of
potential dispute among them.

     WHEREAS, the Parties desire to settle potential disputes by the exchange of
certain rights and obligations  hereunder.  NOW, THEREFORE,  in consideration of
the  premises  and mutual  covenants  herein  contained,  and for other good and
valuable  consideration,  the  receipt  and  sufficiency  of  which  are  hereby
acknowledged, the Parties hereto agree as follows:


                                       21

                     [***] CONFIDENTIAL TREATMENT REQUESTED

                                    ARTICLE I
                                   DEFINITIONS
         The terms in this Agreement with initial letters  capitalized,  whether
used in the  singular or the plural,  shall have the meaning set forth below or,
if not listed below, the meaning designated in places throughout this Agreement.

     1.1 "Affiliate" means an individual,  trust, business trust, joint venture,
partnership,  corporation,  association  or any other entity which  (directly or
indirectly) is controlled by,  controls or is under common control with a Party.
For the  purposes  of this  definition,  the  term  "control"  (including,  with
correlative meanings,  the term "controlled by" and "under common control with")
as used with  respect to any Party,  shall mean the  possession  of the power to
direct or cause the  direction  of the  management  and  policies  of an entity,
through the  ownership of the  outstanding  voting  securities or by contract or
otherwise.

1.2 "Control"  means  possession of the ability to grant a license or sublicense
as provided for herein  without  violating  the terms of any  agreement or other
arrangements with a Third Party.

***      **************************************************************.

1.4 "Date of First Sale" means, on a Product-by-Product basis, the date on which
a  Party  (or an  Affiliate  or a  Sublicensee)  first  sells  a  Product  to an
unaffiliated  Third Party in an arms  length  commercial  transaction.  1.5 "DPC
X-Patents" means the rights granted by any governmental authority under a Patent
derived from *********** and any counterparts  thereof,  and  additionally,  the
rights  granted  by any  governmental  authority  under a  Patent  which  claims
***********************  ***************************,  which  Patent is owned or
Controlled by DPC at any time.



1.6      "Effective Date" means the date first written above.

1.7      "EMEA" means the European Medical Evaluation Agency.

1.8 "FDA" means the United States Food and Drug  Administration or any successor
agency.

1.9 "Field" means the discovery,  synthesis,  and selection of  X-Compounds  and
N-Compounds and the  manufacture,  development  and use of Products.  1.10 "IND"
means an  investigational  new drug application for a Product filed with the FDA
as more fully defined in 21 C.F.R.
ss.312.3 or its equivalent in any country.

1.11  "Information"  means  information,  generally  not  known  to the  public,
relating  to  the  Field  and   including   screening   data,   pharmacological,
toxicological,  clinical test data and analytical data. 1.12 "Janssen X-Patents"
means the rights granted by any  governmental  authority  under a Patent derived
from  *********** and any counterparts  thereof,  and  additionally,  the rights
granted   by  any   governmental   authority   under  a  Patent   which   claims
***********************  ***************************,  which  Patent is owned or
Controlled by Janssen at any time.

1.13 "Major European Country" means France, Germany or the United Kingdom.

1.14  "N-Compounds"  means  those  compounds  which,  as  compounds  or chemical
entities,    are    specifically   or   generically    within   the   scope   of
****************************************   and  includes   those   compounds  as
described     in     the     disclosure     of     ***********     and     shown
***************************************************.

1.15 "NDA" means a New Drug  Application and all  supplements  filed pursuant to
the requirements of the FDA, including all documents, data and other information
concerning  Product  which are  necessary  for or included  in, FDA  approval to
market a Product as more fully defined in 21 C.F.R. ss.314.50 et. seq.



***    *************************************************************************
***************************************.

1.17  "Net  Sales"  means  the  amount  billed  by a Party  or an  Affiliate  or
Sublicensee  for  sales of a  Product  to a Third  Party  less:  (a)  discounts,
including cash discounts,  discounts to managed care or similar organizations or
government  organizations,  rebates paid,  credited,  accrued or actually taken,
including  government  rebates  such as Medicaid  chargebacks  or  rebates,  and
retroactive price reductions or allowances  actually allowed or granted from the
billed  amount,   and  commercially   reasonable  and  customary  fees  paid  to
distributors  (other than to a distributor that is an Affiliate of a Party), (b)
credits or  allowances  actually  granted upon claims,  rejections or returns of
such sales of Products, including recalls, regardless of a Party requesting such
recalls, (c) freight,  postage, shipping and insurance charges paid for delivery
of such Product,  to the extent billed separately on the invoice and paid by the
buyer, and (d) taxes, duties or other governmental charges levied on or measured
by the billing  amount  when  included in  billing,  as  adjusted  for  rebates,
charge-backs  and refunds and (e) provisions for actual  uncollectible  accounts
determined in accordance  with U.S.  generally  accepted  accounting  practices,
consistently  applied to all products of a Party. Where a Product is sold in the
form of a  combination  Product  containing  one or more active  ingredients  in
addition to an X-Compound or N-Compound,  Net Sales for such combination Product
will be calculated by multiplying  actual Net Sales of such combination  Product
by the  fraction  A/(A+B)  where A is the  invoice  price  of the  X-Product  or
N-Product if sold  separately in the same dose, and B is the total invoice price
of any other active component or components, or devices, in the combination,  if
sold separately in



     the  same  dose.  If,  on a  country-by-country  basis,  the  other  active
component or components in the  combination  are not sold separately in the same
dose in said country, Net Sales for the purpose of determining  royalties of the
combination  Product shall be calculated by multiplying actual Net Sales of such
combination  Product by the  fraction  A/C where A is the  invoice  price of the
Product,  if sold separately in the same dose, and C is the invoice price of the
combination Product. If, on a country-by-country  basis, neither the Product nor
the other active  component or  components  of the  combination  Product is sold
separately  in the same dose in said  country,  Net Sales  for the  purposes  of
determining  royalties of the  combination  Product  shall be  determined by the
Parties by mutual agreement.

1.18     "N-Product" means a Product comprised of an N-Compound.

1.19  "Neurocrine  N-Patents"  means  the  rights  granted  by any  governmental
authority under a Patent derived from ************ and any counterparts thereof,
and  additionally,  the rights  granted by any  governmental  authority  under a
Patent which claims ******************** *************************, which Patent
is owned or Controlled by Neurocrine at any time.

1.20  "Neurocrine  Receptor  License"  means the license  granted to  Neurocrine
pursuant                                  to                                 the
********************************************************************************
**************************, including rights under ************************.

1.21  "Neurocrine  X-Patents"  means  the  rights  granted  by any  governmental
authority under a Patent derived from *********** and any counterparts  thereof,
and  additionally,  the rights  granted by any  governmental  authority  under a
Patent which claims ***********************  ***************************,  which
Patent is owned or Controlled by Neurocrine at any time.



********************************************************************************
********************************************************************************
*******************************.

1.23  "Patent"  means (i) valid and  enforceable  letters  patent  including any
extensions,  registration,   confirmation,  reissue,  continuation,  divisional,
continuation-in-part,  re-examination,  or  renewal  thereof,  and (ii)  pending
applications  for letters patent.

1.24 "Patent Costs" means the reasonable fees and expenses paid to outside legal
counsel and other Third Parties, and filing and maintenance  expenses,  incurred
in connection  with the  establishment  and maintenance of rights under Patents.

***  ***************************************************************************
********************************************************************************

****  **************************************************************************
***********************************************************************.

1.26 "Phase II" means that  portion of the  clinical  development  program for a
Product which  provides for an indication of the dosage  regimen in patients and
as an initial  assessment of efficacy and safety  required as more fully defined
in 21 C.F. R.
312.21(b).

1.27 "Phase III" means that  portion of the clinical  development  program for a
Product  which  provides for large scale  clinical  studies  intended as pivotal
trials for regulatory  filings  conducted in a sufficient  number of patients to
establish  Product clinical efficacy for one or more indications and its safety,
as more fully defined in 21 C.F.R.  312.21 (c).

1.28 "Product" means any form or dosage of a compound for  pharmaceutical use in
humans or other  animals or for use as a  diagnostic  tool that  consists  of an
X-Product or N-Product, as the case may be.



***  ***************************************************************************
*************************************************.

1.30 "Regulatory  Approval" means all official approvals by government,  pricing
or health  authorities  in a  country  (or  --------------------  super-national
organizations,  such as the  EMEA)  which  are  required  for first use or sale,
including, importation,  manufacture (where manufacture is required), pricing or
reimbursement of a pharmaceutical product in such country where required.

1.31 "Sublicensee" means, with respect to a particular Product, a Third Party to
whom a Party has granted a license or sublicense  -----------  under any Patents
to make,  use and sell such Product.  As used in this  Agreement,  "Sublicensee"
shall  also  include  a Third  Party to whom a Party  has  granted  the right to
distribute  a  Product,  provided  that  such  Third  Party is  responsible  for
marketing and promotion of such Product within its distribution territory.

1. 32 "Third  Party"  means any  entity  other  than a Party  hereto,  excepting
Affiliates of a Party. -----------

1.33 "X-Compounds" means compounds which, as compounds or chemical entities, are
specifically  or  generically   within  the  published   -----------  claims  of
*********** or which are specifically or generically within the published claims
of   *****************************************   having   the   following   base
structure:  **********************  ************.  For clarity and in accordance
with the foregoing,  an "X-Compound" is not and does not include those compounds
described                *******************************************************
********************************.

1.34     "X-Product" means a Product comprised of an X-Compound.



1.35 "Valid  Patent  Claim"  means a claim in any  unexpired  Patent,  which has
matured into an issued patent which has not been held invalid by a  non-appealed
or  unappealable  decision  by a court or other  appropriate  body of  competent
jurisdiction. The scope of a Valid Patent Claim shall be limited to its terms as
set forth in the Patent itself and as further defined by any court,  body or law
of competent jurisdiction. For the purpose of royalty determination and payment,
any claim being prosecuted in a pending patent application shall be deemed to be
the equivalent of a Valid Claim of an issued,  unexpired patent,  provided it is
not pending for greater  *********  ********* from the filing date of the patent
application  in which case it shall  cease  being a Valid Claim until the patent
issues,  provided  further that in the case of  interference  proceedings in the
United States,  ******************  period will be extended until the completion
of the interference.

                                   ARTICLE II
                                 LICENSE GRANTS

2.1  Common  Interest  Patent Cross License.

(a)  DPC.  DPC grants to Janssen and  Neurocrine,  separately,  a  non-exclusive
     worldwide  license  under  any  Patent  derived  from  ***********  and any
     counterparts  thereof,  to make, have made, use, sell,  offer to sell, have
     sold and import  X-Compounds  and  X-Products.
(b) Janssen and Neurocrine.
     Janssen and Neurocrine,  separately, grant to DPC a non-exclusive worldwide
     license in and to their  respective  rights  under any Patent  derived from
     *********** and any  counterparts  thereof,  to make, have made, use, sell,
     offer to sell, have sold and import X-Compounds and X-Products.


(c)  Sublicenses.  The licenses of this paragraph are without the right to grant
     sublicenses except to the license grantor. -----------

2.2        Special         Interest         Patent        Cross         License.
- -----------------------------------------------

(a)  DPC.  Janssen  and  Neurocrine,  separately,  grant  to  DPC  an  exclusive
     worldwide  license,  with  a  right  to  grant  sublicenses,   under  their
     respective rights in and to the Janssen X-Patents and Neurocrine  X-Patents
     and under their  respective  interests in DPC X-Patents to make, have made,
     use, sell, offer for sale, have sold and import certain X-Compounds,  which
     X-Compounds          contain          *************************************
     *************************************  as in formula ****************** and
     formula  ******  ************  where  such   *************************   is
     otherwise  ****************************************  otherwise specifically
     do  not   include   a   total   of   ********   compounds   which   may  be
     *********************************************************************** and
     provided   that  said   specifically   ************************   were  not
     previously*************************************************************  or
     which may be ********  *************************  after  ************** and
     before  ***********  ******  *********************  and provided  that said
     specifically         named         ****************         were        not
     **************************************   in   a   written   record   before
     **********************.

(b)  Janssen and Neurocrine.  DPC grants to Janssen and Neurocrine,  separately,
     co-exclusive worldwide licenses, with the right to grant sublicenses, under
     DPC X-Patents and under DPC's interest in Janssen  X-Patents and Neurocrine
     X-Patents  to make,  have made,  use,  sell,  offer to sell,  have sold and
     import X-Compounds, which X-Compounds


     do  not  contain   ********************************************************
     ******************* as in formula  ****************** and formula *********
     ******** where such *********************** is otherwise ******************
     *********************  otherwise  specifically  include a  total***********
     compounds                             which                             may
     be********************************************************************* and
     provided   that   said   specifically   ***********************   were  not
     ****************************************************************
     ************  or  which  may  be  **********************************  after
     ******   ************************************************************   and
     provided   that   said   *************************************   were   not
     *********************************************************************** and
     in  accordance  with  the  foregoing,  DPC does not  grant  to  Janssen  or
     Neurocrine a license  (exclusive or  non-exclusive)  to any subject  matter
     disclosed or claimed in  ************************************* or otherwise
     as shown in formula ****************************************.

(c)  Program  Patents.  DPC X-Patents  licensed to Janssen and Neurocrine  under
     this  Article  will be  considered  by Janssen  and  Neurocrine  a "Program
     Patent"  under the  agreement  between  Janssen  and  Neurocrine  effective
     January 1, 1995 for the purpose of  determining  the rights therein and the
     obligations  therefor as between  Janssen and  Neurocrine  only.  2.3 Other
     Patent Licenses.


(a)  Neurocrine  N-Patents.  Neurocrine  grants  to DPC an  exclusive  worldwide
     license, with a right to grant sublicenses, under the Neurocrine N-Patents,
     to make,  have made,  use,  sell,  offer to sell and import  N-Compounds or
     N-Products.

(b)  Neurocrine  Receptor License.  At the election of DPC, Neurocrine agrees to
     grant and will grant to DPC, by way of sublicense, a non-exclusive license,
     with no right to grant sublicenses,  under the Neurocrine Receptor License,
     to ************************** ************************ This sublicense will
     terminate  ******************  unless  extended by mutual  agreement and is
     fully  paid-up  with  respect to license  fees and patent  prosecution  and
     maintenance expenses following provision by DPC of the payment specified in
     Section  4.13(i).  In the event DPC wishes to exercise its right to receive
     such a sublicense,  DPC must notify  Neurocrine of such election in writing
     within by no later than **************************************************.
     Following the Effective Date, DuPont may request that Neurocrine deliver to
     DPC the  relevant  terms,  with  appropriate  substantiation,  under  which
     Neurocrine has received the Neurocrine  Receptor  License.  Neurocrine will
     deliver the relevant terms, with appropriate substantiation, within 30 days
     of   the   date   of  the   request.   Neurocrine   and   DPC   will   then
     ****************************************************,    Neurocrine    will
     provide a sublicense  to DPC and DPC will agree to pay  royalties and other
     amounts payable *********************************** ***********************
     in    accordance     with    the    terms    of    such    sublicense    to
     **********************************************************   by  reason  of
     DPC's exploitation of the sublicense. In any event,



     DPC will not be obligated to pay the Third Party licensor or Neurocrine for
     acts     under     such     license     or     sublicense     any    amount
     ***********************************************************************
     with respect to equivalent acts.

2.4 Initial  Payments  License.  In the event that  Janssen  elects to avoid any
obligation of payment to DPC required under  sub-paragraph  4.1(b), then Janssen
agrees  (and  Neurocrine  approves  and  consents  to the  extent  that any such
approval or consent  are  necessary)  that DPC may,  at its option,  assume from
Janssen all of Janssen's rights and obligations ************** which are held or
owed by Janssen  at the time  Janssen  notified  DPC of its intent to avoid such
payment and which are held or owed by Janssen **************************. In the
event DPC  exercises  this right,  Neurocrine  hereby agrees to cooperate to the
extent reasonably necessary to permit DPC to assume such rights and obligations.
DPC may exercise this right of assumption  by written  notice to Janssen  within
ninety (90) days  following  DPC's receipt of the notice of Janssen's  intent to
avoid payment pursuant to sub-paragraph  4.1(b).  Upon exercise of this right of
assumption,  DPC will assume all of Janssen's  rights and  obligations  relating
specifically *******************************************************************
********************************************************************************
**********************************************************************.      For
clarification,  the  future  development  and  marketing  efforts  of  DPC  with
Neurocrine  and  Janssen  with  Neurocrine  will be  considered  as  independent
relationships  with all rights and obligations being  independently  determined.
Specifically, the **************************************************************
*************************************************************   will   have   no
effect   on   the   other   rights   and    obligations    of   Janssen    *****
*************************************  and the further  development  and sale of
compounds by Janssen and Neurocrine will have no effect



on   the   rights   and    obligations    of   DPC   under   the    portion   of
*****************************************.

                                   ARTICLE III
                    PRODUCT DEVELOPMENT AND COMMERCIALIZATION

3.1  Independent  Programs.  Unless  otherwise  specifically  stated  herein  or
provided  for  elsewhere,   each  Party's  efforts  to  identify,   develop  and
commercialize  Products are separate and independent  efforts.  Unless otherwise
specifically stated herein or provided for elsewhere,  there is no obligation or
right of the Parties herein to consult, collaborate or exchange information.

3.2 No diligence. Unless provided for by separate agreement between the Parties,
no research, development or commercialization diligence or efforts are agreed to
or required by the Parties hereunder. All business decisions, including, but not
limited to, the design,  sale,  price and promotion of X-Products and N-Products
under  this  Agreement  and the  decisions  whether  to  market  or  discontinue
marketing  any  particular  X-Product  or  N-Product  shall be  within  the sole
discretion of the marketing Party. Any marketing of an X-Product or N-Product in
one market or country  shall not  obligate  the  marketing  Party to market said
Product  in any other  market  or  country.  Furthermore,  the  Parties  make no
representation  or warranty that the marketing of an X-Product or N-Product,  as
the case may be, shall be the exclusive means by which a Party will  participate
in any therapeutic  field.  ****************************************************
********************************************************************************
********************************************************************************
********************************************************************************
*********************


********************************************************************************
********************************************************************************
********************************************************************************
**********************************************************************.


                                  ARTICLE IV **
                                   PAYMENTS **


In  consideration  of the  assignments,  rights and licenses  granted under this
Agreement,  the  Parties  agree to pay each other as follows:

4.1 License  Fees Payable to DPC.

(a)  Initial  Payment.  Within  thirty  (30)  days  after  the  Effective  Date,
     **************** ------------------- *********************************. (b)
     Subsequent     Payments.      *********************************************
     ***********************************************************************
     ****************************************************  may avoid any payment
     under  this  subparagraph  by  notifying  *** of its  intent to avoid  such
     payment       and       warranting       to        ************************
     ***********************************************************************  so
     long as the payment is not made by no later than the  payment due date.  No
     further amounts will be payable under this subparagraph

(b)  and DPC will be entitled to exercise it option under  Paragraph  2.4 above.
     In the event  Janssen  shall have  terminated  or  forfeited  its rights to
     develop  and  commercialize   X-Products  in  favor  of  Neurocrine,   then
     Neurocrine  will be solely  responsible  for the  warranty  made under this
     sub-Paragraph.  4.2 Milestone  Payments to DPC.  Janssen agrees to make the
     following payments to DPC upon the first occurrence of each milestone event
     for the first  *********************  developed by Janssen, its Affiliates,
     or  Sublicensees  during the term of this  Agreement.  Janssen shall not be
     required to make any milestone payment for **********************  once the
     applicable milestone payment has been paid for *********************. If an
     **********  is dropped  from  development  by  Janssen  and  replaced  with
     ******************  (a  ************************),  Janssen  shall  not  be
     obligated to make the same milestone



     payments for the  **********************  as it already made in  connection
     with the ********** which was replaced. Except as specifically provided for
     below, it is understood that in no event shall Janssen be obligated to make
     the payment due on any  milestone  more than once with  respect to the same
     **********  (or its  **********************),  regardless  of the number of
     indications for which such ********** is developed.

- --------------------------------------------------------------------------------
Milestone                                                             Payment
- --------------------------------------------------------------------------------
Filing and acceptance for review of an IND
 or its equivalent in any Major European Country                    $***********

Enrollment of the fifth patient in a Phase II
 clinical trial or its equivalent in any country                    $***********

Enrollment of the fifth patient in a Phase III
 clinical trial or its equivalent in any country                    $***********

Filing and acceptance for review of a U. S. NDA                     $***********

Regulatory Approval in the U. S. for a first indication             $***********

Regulatory Approval in any Major European
 Country or by the EMEA                                             $***********

Regulatory Approval in the U. S. of each additional indication      $***********



4.3 Milestone Payments to Janssen.  DPC agrees to make the following payments to
Janssen and/or Neurocrine, as the case may be, upon the first occurrence of each
milestone    event   for   the    first    ************************************,
collectively, developed by DPC, its Affiliates, or Sublicensees, during the term
of this  Agreement.  Payments  for  ***********  shall  be made to  Janssen  and
payments *************** shall be made to Neurocrine.  DPC shall not be required
to make any milestone payment for subsequent *********** or
***********



once    the    applicable     milestone    payment    has    been    paid    for
***************************  ********. If an ************************ is dropped
from      development      by     DPC     and     replaced      with     another
****************************************************                          or
"**********************"), DPC shall not be obligated to make the same milestone
payments for the  ********************** or ********************** as it already
made in connection with the ************************  which was replaced. Except
as specifically  provided for below, it is understood that in no event shall DPC
be  obligated  to make the  payment  due on any  milestone  more  than once with
respect to the same  ***********************************************************
*****************************************,  regardless  of the
*********************  ************************************.  For clarification,
**********************  shall be  considered to form a single group of compounds
for the determination of amounts due under this Paragraph.

- --------------------------------------------------------------------------------
Milestone                                                            Payment
- --------------------------------------------------------------------------------
Filing and acceptance for review of an IND or its
 equivalent in any Major European Country                           $***********

Enrollment of the fifth patient in a Phase II
 clinical trial or its equivalent in any country                    $***********

Enrollment of the fifth patient in a Phase III
 clinical trial or its equivalent in any country                    $***********

Filing and acceptance for review of a U. S. NDA                     $***********

Regulatory Approval in the U. S. for a first indication             $***********

Regulatory Approval in any Major European
 Country or by the EMEA                                             $***********

Regulatory Approval in the U. S. of each
 additional indication                                              $***********




4.4 Milestone  Payment  Timing.  The Party  achieving any milestone  event shall
promptly give notice to the Party  receiving  payment that a milestone event has
been achieved and a milestone payment earned under Paragraphs 4.2 or 4.3 hereof.
The payments set forth in  Paragraphs  4.2 and 4.3 shall each be due and payable
by the paying Party within thirty (30) days of receipt of such notice,  provided
however,  that in the event any of the milestone  events have occurred  prior to
the Effective  Date,  said  milestone  payments  shall be due and payable within
thirty (30) days of the Effective Date. 4.5 DPC Earned Royalties For X-Products.
On a  Product-by-Product  basis,  Janssen shall pay DPC a royalty,  based on Net
Sales of X-Products  sold by or for Janssen,  or its Affiliates or  Sublicensees
according to the following schedule:

(a)  for Net Sales in the United States (its territories and possessions)  only,
     where a Valid  Patent  Claim on a  composition  of  matter  exists in a DPC
     X-Patent  or any Patent  derived  from  ************  and any  counterparts
     thereof that covers the sale or use of an X-Product;

- ------------------------------------------------------------ --------------
Annual U. S. Net Sales                                       Royalty Rate
- ------------------------------------------------------------ --------------
Less that ***********                                        ***********

From ***********                                             ***********

Greater than ***********                                     ***********


(b)  for all  consolidated  Net Sales outside the United States (its territories
     and  possessions),  where a Valid Patent Claim on a  composition  of matter
     exists in a DPC  X-Patent or any Patent  derived from  ***********  and any
     counterparts thereof that covers the sale or use of an X-Product;




- ------------------------------------------------------------ --------------
Annual ex-U. S. Net Sales                                    Royalty Rate
- ------------------------------------------------------------ --------------

Less that ***********                                        ***********

From ***********                                             ***********

From ***********                                             ***********

Greater than ***********                                     ***********


The royalties  payable under  Section  4.5(a) are paid to DPC  regardless of the
*******************************************************************************.

4.6  Janssen and  Neurocrine  Earned  Royalties  For  Products.  On a Product by
Product basis, DPC shall pay Janssen a royalty, based on Net Sales of X-Products
and Neurocrine a royalty based on Net Sales of N-Products sold by or for DPC, or
its Affiliates or Sublicensees according to the following schedule:

(a)  for Net Sales in the United States (its territories and possessions)  only,
     where  a  Valid  Patent  Claim  on a  composition  of  matter  exists  in a
     Neurocrine N-Patent,  Neurocrine  X-Patent,  Janssen X-Patent or any Patent
     derived ********* ****** and any counterparts  thereof that covers the sale
     or use of an X-Product or N-Product;

- ------------------------------------------------------------ ---------------
Annual U. S. Net Sales                                       Royalty Rate
- ------------------------------------------------------------ ---------------

Less that $***********                                       ***********

From ***********                                             ***********

Greater than ***********                                     ***********



(b)  for all  consolidated  Net Sales outside the United States (its territories
     and  possessions),  where a Valid Patent Claim on a  composition  of matter
     exists in which Janssen or  Neurocrine  have rights and that covers sale or
     use of an X-Product or N-Product;

- ------------------------------------------------------------ ---------------
Annual ex-U. S. Net Sales                                    Royalty Rate
- ------------------------------------------------------------ ---------------

Less that $***********                                       ***********

From $***********                                            ***********

From $***********                                            ***********

Greater than $***********                                    ***********


The  royalties   payable  under  Section  4.6(a)  are  paid  regardless  of  the
*******************************************************************************.

4.7 Term For Royalty  Payment.  Royalties  payable under  Paragraphs 4.5 and 4.6
shall be paid on a country-by-country, Product-by-Product basis from the Date of
First Sale until the  expiration of the last to expire of any Janssen  X-Patent,
Neurocrine  X-Patent,  DPC X-Patent and/or Neurocrine N-Patent including a Valid
Patent  Claim on a  composition  of matter  that  covers the sale or use of such
Product. For clarification,  the royalty rates are applicable to the incremental
Net Sales with which they are associated only, so that, for example, the highest
royalty  rate is  applicable  to  those  incremental  Net  Sales  in  excess  of
$***********  only.  For further  clarification,  no royalty is due in countries
where there is no Valid  Patent Claim that covers the sale or use of the Product
and Net Sales therein are not included in any calculation of royalty due.



4.8 Third  Party  Patents.  In the event  that  during  the term of the  royalty
obligation  for a Product  under this Article IV, a Third Party shall  control a
Patent or  Patents in any  country  covering  the sale of a Product,  and in the
reasonable  judgment of the Party selling such Product  pursuant to the licenses
granted hereunder,  it would be impractical or impossible for such Party (or its
Affiliates or Sublicensees) to continue to sell the Product without  obtaining a
royalty bearing license from such Third Party, then such Party shall be entitled
to a credit  against the royalties due hereunder with respect to such country an
amount equal to *********** of the royalty paid to such Third Party, said credit
not to exceed *********** of the royalty rate due under this Agreement,  arising
from the sale of the Product in said  country.  By way of  example,  in no event
shall a  ***********  royalty  rate  be less  than  ***********

4.9  Compulsory  License.  If at any time and from time to time a Third Party in
any country shall, under the right of a compulsory license granted or ordered to
be granted by a competent  governmental  authority,  manufacture,  use or sell a
Product with respect to which royalties would be payable  pursuant to Paragraphs
4.5 or 4.6 hereof,  manufacture,  use or sale of such Product by the Third Party
shall not be considered  sales by a Sublicensee  hereunder.  The Party by whom a
royalty  would have been payable and the Party to whom a royalty would have been
payable  under  Paragraph  4.5 or 4.6,  shall each be entitled to fifty  percent
(50%) of the compulsory royalty payable by said Third Party as consideration for
the compulsory license.

4.10 Currency  Restrictions.  Except as herein provided in this  Paragraph,  all
royalties shall be paid in U.S.  Dollars.  If, at any time,  legal  restrictions
prevent the prompt  remittance of part of or all  royalties  with respect to any
country  where  Products  are sold,  the paying  Party  shall have the right and
option to make such payments by depositing  the amount thereof in local currency
to the receiving Party's accounts in a bank or depository in such country.





                                                                  22

4.11 Royalty Reports and Records.

(a)  Reports.  During the term of this Agreement and commencing with the Date of
     First Sale of  Product,  the paying  Party  shall  furnish,  or cause to be
     furnished  to the  receiving  Party,  written  reports,  including  royalty
     payment due,  within  sixty (60) days  following  the end of each  calendar
     quarter  for which  royalties  are due,  showing:  (i) the Net Sales of all
     X-Products or N-Products  sold by the paying Party,  its Affiliates and its
     Sublicensees,  during the calendar  quarter;  (ii)the  royalties payable in
     U.S.  Dollars,  which shall have  accrued  hereunder in respect to such Net
     Sales;  (iii) the exchange rates used, if any, in determining the amount of
     U.S. Dollars;  and (iv) any withholding taxes required to be paid from such
     royalties.
(b)  Currency.  All  payments  to be made by the paying  Party to the  receiving
     Party shall be made in U.S. Dollars,  except as provided in Paragraph 4.10.
     In the case of sales outside the United States,  royalty  payments shall be
     converted to U.S.  Dollars in accordance  with the paying  Party's  current
     customary and usual procedures for calculating  same.
(c)  Audit. The paying Party shall maintain  complete and accurate  records,  in
     accordance with U.S. generally  accepted  accounting  practices,  which are
     relevant to costs,  expenses and  payments  under this  Agreement  and such
     records shall be open during reasonable  business hours for a period of two
     (2) years from  creation  of  individual  records  for  examination  at the
     receiving  Party's  expense  and not more  often  than  once each year by a
     certified public accountant or other representative selected by the



                                                                  30
                        [***]  CONFIDENTIAL TREATMENT REQUESTED

     receiving  Party and acceptable to the paying Party for the sole purpose of
     verifying  the  correctness  of  calculations  or such  costs,  expenses or
     payments   made  under  this   Agreement.   In  the   absence  of  material
     discrepancies  (in  excess  of  five  percent  (5%))  in  any  request  for
     reimbursement  resulting from such audit,  the accounting  expense shall be
     paid by the  receiving  Party.  If material  discrepancies  do result,  the
     paying  Party  shall bear the  reasonable  audit  expense.  Any  records or
     accounting information received from the paying Party shall be Confidential
     Information for purposes of Article VII.

4.12 Taxes. The Party receiving  royalties shall pay any and all taxes levied on
account of royalties it receives  under this  Agreement.  If laws or regulations
require  that taxes be  withheld,  the paying  Party will (i) deduct those taxes
from  otherwise  remittable  royalty,  (ii)  timely  pay the taxes to the proper
taxing authority,  and (iii) send proof of payment to the receiving Party within
thirty (30) days of receipt of  confirmation of payment from the relevant taxing
authority.

4.13  Neurocrine  Receptor  License  Payment.  In the event  that DPC  elects to
receive a sublicense under the Neurocrine Receptor License, (i) in consideration
for ***************************************************************************,
DPC  shall pay  Neurocrine  the  amount of  ************************************
within thirty (30) days after the effective date of any such sublicense for said
rights under said  sublicense,  and (ii) DPC shall be responsible for payment to
the Third Party licensor of the Neurocrine Receptor License, all amounts payable
under the Neurocrine Receptor License which are attributable to DPC's activities
under its  sublicense.  DPC shall pay to Neurocrine  ***************************
********************************************************************************
********************************************************************************
**************************************************************************


******************************************************************. For purposes
of  clarification,  it is intended  that  Neurocrine  may arrange with its Third
Party  licensor that royalty or milestone  sums due under this Paragraph will be
paid directly to such Third Party licensor by DPC and DPC will cooperate in such
agreement.   4.14  Janssen  or  Neurocrine  Obligation  of  Payment.  Except  as
specifically  provided for otherwise,  any obligation of payment to DPC pursuant
to the terms of this  Article for the  development  and sale of Products are the
responsibility  of  Janssen.  In the event  Janssen  shall  have  terminated  or
forfeited  its  rights  to  develop  and  commercialize  a  Product  in favor of
Neurocrine  and where  the  obligation  of  payment  arose due to acts  taken by
Neurocrine  subsequent to such  termination  or  forfeiture,  then such payments
shall be the  obligation  of  Neurocrine  alone.  Additionally,  the  actions of
Janssen and  Neurocrine  under this Article will be considered  the actions of a
single party in the  determination  of what  milestone  payments are due, in the
determination of royalty rate and in the determination of the number of Products
developed.

                                     *****


                                      *****


                                      *****



********************************************************************************
********************************************************************************
********************************************************************************
********************************************************************************
********************************************************************************
********************************************************************************
********************************************************************************
*******************************************************.


                                  ARTICLE VI **
                                   RELEASE **
6.1 Release.  Each of DPC,  Neurocrine,  and Janssen for itself,  its  officers,
directors,  investors, employees, assigns and ** successors, in consideration of
the promises and covenants  contained herein, the sufficiency of which is hereby
acknowledged,  does ** hereby  fully and  forever  release,  remise,  acquit and
discharge each other, their representatives,  agents,  employees,  employers, **
officers,  directors,  shareholders,   administrators,   successors,  attorneys,
insurers  and  assigns  and any of their  Affiliates  of and ** from any and all
actions, causes of action, suits, claims, cross-claims, demands, debts, damages,
losses, costs and expenses,  of ** every kind, nature and description,  which it
now has, ever had, or which its administrators, successors, insurers and assigns
now ** have or may hereafter  have on account of, or arising out of, or relating
to (i) the *********************************************************************
********************************************************************************
*******************************************************************************


********************************************************************************
********************************************************************************
********************************************************************************
********************************************************************************
********************************************************************************
***************.  Each of DPC,  Neurocrine  and  Janssen  expressly  agrees  and
intends  that this  release  shall  release  each other from any and all claims,
actual and potential,  known and unknown,  fixed and contingent including claims
of  which  the  Parties  are  not  aware  as of  the  date  hereof  relating  to
***************************  despite the fact that each may later discover facts
in addition to or different from those which it now believes to be true. Each of
DPC,  Neurocrine  and Janssen  agrees that it will  withdraw and desist from any
proceedings or arbitrations  presently in progress with the acknowledgement that
the issues of such  proceeding or  arbitration  have been finally  settled.  6.2
General Release. Each of DPC, Neurocrine and Janssen, being represented by legal
counsel,  acknowledges  that it is familiar with provisions of California  Civil
Code Section 1542, which provides as follows:  A GENERAL RELEASE DOES NOT EXTEND
TO CLAIMS WHICH THE  CREDITOR  DOES NOT KNOW OR SUSPECT TO EXIST IN HIS FAVOR AT
THE TIME OF EXECUTING  THE RELEASE,  WHICH IF KNOWN BY HIM MUST HAVE  MATERIALLY
AFFECTED HIS SETTLEMENT  WITH THE DEBTOR.  Each of DPC,  Neurocrine and Janssen,
being aware of said code  section,  agrees to expressly  waive any rights it may
have thereunder,  as well as under any other statute or common law principles of
similar effect. Neurocrine and Janssen further acknowledge and agree that this





waiver of rights under Section 1542 of the Civil Code by DPC has been separately
bargained for and is essential and material term of this Agreement and,  without
such waiver,  each of DPC,  Neurocrine  and Janssen  would not have entered into
this Agreement.

6.3 No Admission.  DPC acknowledges that Neurocrine and Janssen have denied, and
continue  to  deny,   any  and  all  liability   with  respect  to  or  relating
********************************************************************************
********************************************************************************
*******************************************************************************.
Nothing in this Agreement shall  constitute any  acknowledgment  or admission of
liability  whatsoever by Neurocrine  and/or  Janssen nor is this Agreement to be
construed as an admission or  suggestion  of liability on the part of Neurocrine
and/or Janssen.  At all times and for all purposes,  this is a settlement of any
disputed claims intended to forever  terminate any claims or continuing  demands
which may be or may have been made between DPC and/or Neurocrine and/or Janssen,
or any of  their  respective  representatives,  successors,  assigns,  officers,
directors,  shareholders,  members, agents employees or insurers with respect to
the foregoing.

6.4  Remedies.  The Parties agree that after the  Effective  Date,  each of DPC,
Neurocrine and Janssen shall be permitted to enforce this Agreement with respect
to any duty or obligation each other have undertaken hereunder,  but in no event
and under no circumstances will each of DPC, Neurocrine and Janssen be permitted
to assert,  publicly  allege,  threaten to bring or bring any claim against each
other for any act,  event or omission which occurred prior to the Effective Date
relating  **********************************************************************
********************************************************************************
********************************************************************************



********************************************************************************
********************************************************************************
********************************************************************************
********************************************************************************
********************************************************************************
********************************************************************************
********************************************************************************
***************************************************.


                                 ARTICLE VII **
                               CONFIDENTIALITY **

7.1  Confidentiality;  Exceptions.  Except to the extent expressly authorized by
this Agreement or otherwise agreed in writing,  **  ----------------------------
the Parties  agree that,  for the time  royalties are due and for five (5) years
thereafter, the receiving Party shall keep confidential and shall not publish or
otherwise  disclose  or use for any purpose  other than as provided  for in this
Agreement any Information and ** other confidential and proprietary  information
and materials  furnished to it by the other Party  pursuant to this Agreement **
(collectively,  "Confidential Information"), except to the extent that it can be
established by the receiving Party that such ** Confidential Information:

(a)  was in the lawful  knowledge and possession of the receiving Party prior to
     the time it was disclosed to, or learned by, the  receiving  Party,  or was
     otherwise  developed  independently by the receiving Party, as evidenced by
     written  **  records  kept in the  ordinary  course of  business,  or other
     documentary proof of actual use by the receiving Party;


                                       33

(b)  was  generally  available  to the  public or  otherwise  part of the public
     domain at the time of its disclosure to the receiving Party;
(c)  became  generally  available to the public or otherwise  part of the public
     domain after its  disclosure  and other than through any act or omission of
     the receiving Party in breach of this Agreement; or
(d)  was  disclosed to the  receiving  Party,  other than under an obligation of
     confidentiality,  by a Third Party who had no obligation to the  disclosing
     Party not to disclose such information to others.

7.2 Authorized  Disclosure.  If a Party is required by law or regulation to make
any disclosure of the other Party's  Confidential  Information  it will,  except
where  impracticable  for  necessary  disclosures,  for  example in the event of
medical  emergency,  give reasonable advance notice to the other Parties of such
disclosure  requirement  and, except to the extent  inappropriate in the case of
Patents,  will use its reasonable  efforts to secure  confidential  treatment of
such Confidential Information required to be disclosed.

7.3 Survival.  This Article VII shall survive the  termination  or expiration of
this Agreement for a period of five (5) years.

7.4 Public Announcements.  No Party shall originate any publicity,  news release
or  public  announcements,  written  or oral,  whether  to the  public or press,
stockholders or otherwise, relating to this Agreement,  including its existence,
the  subject  matter  to which it  relates,  performance  under it or any of its
terms,  to any  amendment  hereto or  performances  hereunder,  other than those
announcements  that are  required by law to be made  without  the prior  written
consent of the other Parties.  Such announcements shall be brief and factual. If
a  Party  decides  to make  an  announcement  required  by  law,  it will  where
reasonable possible give the other Parties





at least five (5) business days advance notice,  of the text of the announcement
so that  the  other  Parties  will  have an  opportunity  to  comment  upon  the
announcement. To the extent that any Party reasonably requests that a disclosing
or  announcing  Party seek  confidential  treatment  pursuant to Rule 406 of the
Securities Act of 1933 or Rule 24b-2 of the  Securities  Exchange Act of 1934 as
amended,  as  applicable  (or any other  applicable  regulation  relating to the
confidential  treatment  of  information)  of  any  information  proposed  to be
disclosed  or  announced,  the  disclosing  or  announcing  Party  will omit the
information  from the  disclosure or  announcement  unless in the opinion of the
disclosing  Party's legal  counsel such  information  is legally  required to be
fully disclosed.

                                  ARTICLE VIII
                              INTELLECTUAL PROPERTY

8.1 Ownership of Patents. Patents shall be owned according to the laws in effect
and  agreements  made  by the  Parties  hereto.  There  is no  provision  herein
affecting or  transferring  the ownership of any Patent.  8.2 Patent  Filings on
N-Compounds or N-Products. Neurocrine will cooperate with DPC to file divisional
applications  worldwide,  as  necessary,  to isolate  those  claims  relating to
N-Compounds  or N-Products  and  contained in  Neurocrine  N-Patents in separate
applications.  In regard to such divided  applications  relating N-Compounds and
N-Products,  DPC  shall  assume  all  control  and  responsibility  for  filing,
prosecuting and maintaining  such Patents,  including having the right to direct
or control all material  actions  relating to the  prosecution or maintenance of
such Patents. DPC will determine the countries in which to file Patents relating
to N-





Compounds and  N-Products  and will assume all Patent Costs  relating to filing,
prosecuting and maintaining  such Patents.  The parties will cooperate with each
other with respect to any  interference  between subject matter in DPC's patents
covering  subject matter that overlaps with the subject matter in the Neurocrine
N-Patents.

8.3 Patent Filings.

(a)  Prosecution and  Maintenance.  Each Party shall prepare,  file,  prosecute,
     maintain  and  own  Janssen  X-Patents,  Neurocrine  X-Patents,  Neurocrine
     N-Patents and DPC X-Patents to cover discoveries and inventions made solely
     by its own  employees or  consultants  and use  reasonable  efforts to file
     initially all such  applications in the United States,  the European Patent
     Office or the appropriate forum under the circumstances.

(b)  Control.  The  Party who is  responsible  for  filing a  Janssen  X-Patent,
     Neurocrine X-Patent, or DPC X-Patent will be termed the "Filing Party" and,
     unless specifically provided for otherwise,  shall have the right to direct
     or control all material  actions relating to the prosecution or maintenance
     of such Patent and shall bear all Patent Costs  associated  therewith.  The
     Filing  Party shall keep the other  Parties  apprised of the status of each
     Janssen X-Patent,  Neurocrine X-Patent,  or DPC X-Patent and shall seek the
     advice of the other  Parties with  respect to patent  strategy and drafting
     applications and shall give reasonable  consideration to any suggestions or
     recommendations  of the other Parties  concerning the preparation,  filing,
     prosecution,  maintenance and defense thereof, in so far as such status and
     advice relates to X-Compounds,  or X-Products.  The Parties shall cooperate
     reasonably  in  the  prosecution  of  all  Janssen  X-Patents,   Neurocrine
     X-Patents,  or DPC  X-Patents  and  shall  share all  material  information
     relating  thereto,   including  all  material  communications  from  patent
     offices,  promptly  after  receipt of such  information,  in so far as such
     information relates to X-Compounds, or X-Products.





                                       34
                     [***] CONFIDENTIAL TREATMENT REQUESTED

 ***  **************************************************************************
      **************************************************************************
      **************************************************************************
      **************************************************************************
      ***********************************.

(d)  Breadth  of  Filing.  Unless  specifically  provided  for  otherwise,   the
     determination  of  the  countries  in  which  to  file  Janssen  X-Patents,
     Neurocrine X-Patents,  and DPC X-Patents shall be made by the Filing Party.
     In the case of applications *********** and ***********, equivalent Patents
     covering    X-Compounds    and    X-Products    must   be   filed   in   at
     least***********************************************************
     ************************************************.  The country list of this
     sub-Paragraph may be reduced as to one application or the other where there
     is a good faith discussion and agreement among the Parties that such filing
     would not serve the interest of the Parties.

(e)  Discontinuation.  If, during the term of this  Agreement,  the Filing Party
     intends to allow any Janssen X-Patent, Neurocrine X-Patent, or DPC X-Patent
     to lapse or go  abandoned,  the Filing Party shall,  whenever  practicable,
     notify the  non-filing  Parties of such  intention at least sixty (60) days
     prior to the date upon which such Patent  shall lapse or become  abandoned,
     and the  non-filing  Parties shall  thereupon  have the right,  but not the
     obligation,  to assume responsibility for the prosecution,  maintenance and
     defense  thereof and all expenses  related  thereto.  The Filing Party will
     receive a  non-exclusive,  royalty-free  license  under such  Patent in the
     countries concerned.



                                      41

8.4 Infringement by Third Parties. If any Janssen X-Patent, Neurocrine X-Patent,
and/or DPC X-Patent is  infringed by a Third Party in any country in  connection
with the manufacture,  use and sale of a X-Product in such country, the Party to
this Agreement first having knowledge of such infringement shall promptly notify
the  others in  writing.  The  notice  shall  set forth the known  facts of that
infringement in reasonable  detail.  The Party owning such Patent shall have the
primary right, but not the obligation, to institute,  prosecute, and control any
action or proceeding  with respect to such  infringement,  by counsel of its own
choice, and at its own expense.  If the owning Party fails to bring an action or
proceeding  within a period of one hundred  eighty (180) days after a request by
the  exclusively  licensed  Party of the infringed  subject matter to do so, the
exclusively  licensed Party of the infringed subject matter shall have the right
to bring and control  any such  action by counsel of its own choice,  and at its
own expense.  The Party bringing suit under this Paragraph  shall bear all costs
and expenses of the suit and shall retain any damages or other  monetary  awards
recovered. A settlement or consent judgment or other voluntary final disposition
of a suit brought by such exclusively licensed Party under this Paragraph may be
entered  into  without  the  consent of the  owning  Party;  provided  that such
settlement,  consent judgment or other disposition does not admit the invalidity
or  unenforceability  of any Patent;  and provided  further,  that any rights to
continue the infringing  activity in such settlement,  consent judgment or other
disposition  shall be limited to the Product or activity that was the subject of
the suit. A settlement or consent judgment or other voluntary final  disposition
of a suit brought by the owning Party under this  Paragraph  may be entered into
only with the  consent of such  exclusively  licensed  Party.  8.5  Defense  and
Settlement  of Third  Party  Claims.  If a Third  Party  asserts  that a patent,
trademark or other intangible right owned by it is infringed by the manufacture,
use or sale of





any Product,  the Party responsible for the payment of royalties on such Product
pursuant to Article IV above (the "Defending  Party') will be solely responsible
for defending against any such assertions at its cost and expense. The Defending
Party  shall  have the  right to  defend  and  settle  against  such  charge  of
infringement

8.6  Patent  Assignment.  No Party may  assign  its  rights  under  any  Janssen
X-Patent,  Neurocrine X-Patent, Neurocrine N-Patent or DPC X-Patent, except with
the prior  written  consent of the  Party(ies)  obligated  to pay  royalties  on
Products covered by such Patent under Article IV above; provided,  however, that
a Party may assign such rights without consent to permitted  assignee under this
Agreement in connection with a merger or similar  reorganization  or the sale of
all or  substantially  all of its assets.

8.7 Notices  Relating to the Act.  The Filing  Party with respect to any Janssen
X-Patent,   Neurocrine  X-Patent,  DPC  X-Patent  shall  notify  the  Party(ies)
obligated to pay  royalties on Products  covered by such Patent under Article IV
above, of communications as to which the Filing Party receives (as patent owner)
a notice pursuant to the Drug Price  Competition and Patent Term Restoration Act
of 1984  (hereinafter  the  "Act"),  including  but not  necessarily  limited to
notices  pursuant to ss.ss.101 and 103 of the Act from persons who have filed an
abbreviated NDA ("ANDA") or a "paper" NDA.

     8.8  Authorization  Relating to Patent Term Extension.  The Filing Party of
any Janssen X-Patent, Neurocrine X-Patent, or DPC X-Patent hereby authorizes the
Party(ies)  obligated to pay royalties on Products  covered by such Patent under
Article IV above, to (a) provide in any NDA a list of patents which includes the
Filing Party Patents that relate to such Product and such other  information  as
the Party believes is  appropriate;  (b) commence suit for  infringement  of the
Patents  under ss.  271(e) (2) of Title 35 of the United  States  Code;  and (c)
exercise any rights that





may be exercisable by the Filing Party as Patent owner under the Act,  including
without limitation, applying for an extension of the term of any patent licensed
to such  Party  hereunder.  In the  event  that  applicable  law in any  country
provides for the extension of the term of any patent  included  among the Filing
Party's Patents,  such as under the U.S. Drug Price  Competition and Patent Term
Restoration  Act of 1984,  the  Supplementary  Certificate  of Protection of the
Member  States of the  European  Union and other  similar  measures in any other
country,  the Filing  Party  shall apply for and use its  reasonable  efforts to
obtain such an extension or, should the law require the Party(ies)  obligated to
pay  royalties to so apply,  the Filing Party  hereby gives  permission  to such
Party  hereunder to do so. The Party(ies)  obligated to pay royalties  hereunder
and the Filing  Party  agree to  cooperate  with one another in  obtaining  such
extension. The Filing Party agrees to cooperate with the Party(ies) obligated to
pay  royalties  or  its  Sublicensee,  as  applicable,  in the  exercise  of the
authorization  granted  herein and will  execute  such  documents  and take such
additional  action as such Party hereunder may reasonably  request in connection
therewith, including, if necessary, permitting itself to be joined as a Party in
any suit for infringement  brought by such Party licensed hereunder.  DPC agrees
that  Janssen  and  Neurocrine  will in all  cases be  considered  as the  Party
obligated  to pay  royalties  under this  Paragraph  for any Product for any DPC
X-Patent.

                                   ARTICLE IX
                                 INDEMNIFICATION

9.1  Indemnification.  Each Party (the  "Indemnifying  Party") shall  indemnify,
defend and hold the other Parties (each an  "Indemnified  Party")  harmless from
and against any and all liabilities,  claims,  damages, costs, expenses or money
judgments ("Losses") incurred by or





rendered  against the  Indemnified  Party and its  Affiliates  and  Sublicensees
incurred  in  the  defense  or  settlement  of a  Third  Party  lawsuit  or in a
satisfaction  of a Third Party  judgment  arising out of any  injuries to person
and/or  damage  to  property  resulting  from  the  research,   development  and
commercialization  of Products by the Indemnifying  Party,  provided however, an
Indemnified  Party  shall not be entitled to  indemnification  hereunder  to the
extent any Loss is  attributable  to the  Indemnified  Party's  negligence.  9.2
Procedure.  In the event that an  Indemnified  Party is seeking  indemnification
under  Paragraph 9.1, it shall inform  Indemnifying  Party of a claim as soon as
reasonably  practicable after it receives notice of the claim,  shall permit the
Indemnifying  Party to assume  direction and control of the defense of the claim
(including the right to settle the claim solely for monetary consideration), and
shall  cooperate as requested (at the expense of the  Indemnifying  Party in the
defense of the claim.

                                    ARTICLE X
                              TERM AND TERMINATION

10.1. Term. This Agreement shall commence on the Effective Date and shall remain
in effect on a  Product-by-Product  basis until the expiration of the obligation
to pay royalties on the part of any Party for such Product.

10.2     Material Breach.
     (a)  In the event that either Party  commits a breach of any material  term
          or  condition  of this  Agreement  and that Party fails to remedy that
          breach within sixty (60) days after receipt of written  notice of that
          breach  from the other  Party,  the Party  giving  notice  may, at its
          option,  begin arbitration  proceedings pursuant to Paragraph 11.2 and
          seek whatever relief he is entitled  to   under the law.





     (b)  The Parties agree that a breach,  including a material breach,  by one
          Party under this  Agreement in its  obligations to a second Party will
          not effect the rights and  obligations  of the third Party  hereunder.
          Specifically,  a breach by Janssen of its obligations owed to DPC will
          not disturb the rights of  Neurocrine,  including the licenses held by
          Neurocrine,  and a breach by Neurocrine of its obligations owed to DPC
          will not disturb the rights of Janssen, including the licenses held by
          Janssen.

     (c)  A material  breach by Janssen under this Agreement  which results in a
          loss of rights by Janssen  which effects  Janssen's  ability to market
          X-Products  will be considered a material  breach by Janssen under the
          agreement  between Janssen and Neurocrine  effective  January 1, 1995.
          10.3  Bankruptcy.  Each Party may, in  addition to any other  remedies
          available  to it by law or in  equity,  exercise  the rights set forth
          below by written notice to any other Party (the "Insolvent Party"), in
          the event the Insolvent Party shall have become insolvent or bankrupt,
          or shall have made an assignment for the benefit of its creditors,  or
          there shall have been appointed a trustee or receiver of the Insolvent
          Party or for all or a substantial part of its property, or any case or
          proceeding  shall  have been  commenced  or other  action  taken by or
          against the Insolvent  Party in bankruptcy or seeking  reorganization,
          liquidation,   dissolution,  winding-up  arrangement,  composition  or
          readjustment  of its debts or any other relief  under any  bankruptcy,
          insolvency,  reorganization  or  other  similar  act  or  law  of  any
          jurisdiction  now or  hereafter  in effect,  or there  shall have been
          issued a  warrant  of  attachment,  execution,  distraint  or  similar
          process against any substantial  part of the property of the Insolvent
          Party,  and any such event  shall have  continued  for sixty (60) days
          undismissed,  unbonded  and  undischarged.  All  rights  and  licenses
          granted





          under or pursuant to this Agreement are, and shall otherwise be deemed
          to be, for  purposes of Section 365 (n) of the U.S.  Bankruptcy  Code,
          licenses of rights to "intellectual property" as defined under Section
          101 of the U.S. Bankruptcy Code. The Parties agree that the Parties as
          licensees  of such rights under this  Agreement,  shall retain and may
          fully  exercise  all of their  rights  and  elections  under  the U.S.
          Bankruptcy  Code. The Parties  further agree that, in the event of the
          commencement of a bankruptcy  proceeding by or against any Party under
          the U.S.  Bankruptcy  Code,  the other  Parties shall be entitled to a
          complete duplicate of (or complete access to, as appropriate) any such
          intellectual   property  and  all  embodiments  of  such  intellectual
          property,  and same, if not already in the their possession,  shall be
          promptly  delivered  to them  (i)  upon  any  such  commencement  of a
          bankruptcy  proceeding upon its written request  therefor,  unless the
          Party subject to such proceeding  elects to continue to perform all of
          their  obligations under this Agreement or (ii) if not delivered under
          (i) above, upon the rejection of this Agreement by or on behalf of the
          Party subject to such proceeding upon written request  therefor by the
          other  Party.  Upon the  insolvency  of any  Party  hereto,  the other
          Parties shall have the option to (i) terminate  this Agreement or (ii)
          keep this  Agreement  in full force and effect and retain all licenses
          granted  hereunder  subject  to  the  payment  of all  milestones  and
          royalties set forth above.  The Parties  expressly  agree that a Party
          reserves a security  interest  in any  amounts  owed to the  Insolvent
          Party and  maintains a right of setoff  against  amounts  owed to such
          Party by the  Insolvent  Party or the value of  damages  caused by any
          failure to perform by the Insolvent Party. 10.4 Survival. Termination,
          relinquishment  or expiration of the Agreement for any reason shall be
          without prejudice to any obligations which shall have accrued prior to
          such  termination,  relinquishment or expiration,  including,  without
          limitation, the any payment obligations and any





          and all damages arising from any breach  hereunder.  Such termination,
          relinquishment   or  expiration  shall  not  relieve  any  Party  from
          obligations  that are expressly  indicated to survive  termination  or
          expiration of the Agreement.

                                   ARTICLE XI
                               DISPUTE RESOLUTION

11.1 Dispute Resolution and Arbitration. In the case of any disputes between the
Parties arising from this Agreement, and in case this Agreement does not provide
a solution  for how to resolve  such  disputes,  the Parties  shall  discuss and
negotiate in good faith a solution  acceptable to both Parties and in the spirit
of this Agreement. If after good faith discussions, the Parties fail to reach an
amicable  agreement,  then  either  Party may upon  written  notice to the other
submit to binding  arbitration  pursuant to Section 11.2. 11.2 Arbitration.  Any
dispute,  controversy or claim arising out of or in connection  with or relating
to this Agreement, or the interpretation,  application,  breach,  termination or
validity  thereof,  including  any claim of inducement by fraud or otherwise not
settled by the  procedures  set forth in  Paragraph  11.1 above or the breach or
alleged breach of a material provision of this Agreement shall be adjudicated by
arbitration  in  accordance  with the  Arbitration  Proceedings  as set forth in
Exhibit A attached hereto.

                                   ARTICLE XII
                  REPRESENTATIONS AND WARRANTIES; EXCLUSIVITY.

12.1  Representations and Warranties.  Each of the Parties hereby represents and
warrants and covenants as follows: (a)



                                       42
                     [***] CONFIDENTIAL TREATMENT REQUESTED

     (a)  Binding  Agreement.  This  Agreement  is a legal and valid  obligation
          binding upon such Party and  enforceable in accordance  with its terms
          except as (i) enforceability may be limited by bankruptcy, insolvency,
          reorganization,  moratorium or similar laws  affecting  enforcement of
          creditor's   rights   and  (ii)   equitable   principles   of  general
          applicability.
     (b)  Due Authorization.  Each party is duly authorized and validly existing
          under the laws of the state of Delaware and has full  corporate  power
          and  authority  to  enter  into  this  Agreement  and  carry  out  the
          provisions hereof.
     (c)  No Conflict. The execution,  delivery and performance of the Agreement
          by such Party does not  conflict  with any  agreement,  instrument  or
          understanding,  oral or written, to which it is a Party or by which it
          is bound, nor violate any law or regulation of any court, governmental
          body or administrative or other agency having jurisdiction over it.
     (d)  Third  Party  Rights.  Each Party has not,  and during the term of the
          Agreement will not, grant any right to any Third Party relating to its
          respective  technology  in the Field  which  would  conflict  with the
          rights granted to the other Party hereunder.
     (e)  Patents.  Each Party owns or  otherwise  controls  all of the  rights,
          title and interest in and to Patents licensed by it hereunder.

12.2 Patents  Warranties.  To its reasonable  best knowledge as of the Effective
Date, each Party represents and warrants that it is not aware of any Third Party
right, other than *************************************************************;
which would  interfere  with the  exercise by the Parties of the rights  granted
hereunder.


                                       53

12.3 Exclusivity.  Unless  specifically stated herein or provided for elsewhere,
the Parties are free to compete in any market or therapeutic area, including the
Field, without restriction and make no promises of exclusivity.

                                  ARTICLE XIII
                                  MISCELLANEOUS

13.1 Relationship of Parties. For the purposes of this Agreement,  each Party is
an independent  contractor  and not an agent or employee of any other Party.  No
Party  shall  have  authority  to  make  any  statements,   representations,  or
commitments  of any kind,  or to take any action  which  shall be binding on any
other Party,  except as may be  explicitly  provided for herein or authorized in
writing.

13.2  Counterparts.  This Agreement may be executed in one or more counterparts,
each of which shall be deemed an original,  and all of which  together  shall be
deemed to be one and the same instrument.

13.3 Headings. All headings in this Agreement are for convenience only and shall
not affect the  meaning of any  provision  hereof.  13.4  Binding  Effect.  This
Agreement  shall  inure to the  benefit of and be binding  upon the  Parties and
their respective  lawful successors and assigns.  13.5 Assignment.  No party may
assign this  Agreement  without the prior written  consent of the other Parties,
except that a Party may assign this  Agreement to an Affiliate or to a successor
in connection with the merger,  consolidation,  or sale of all or  substantially
all of its assets or that  portion of its  business  pertaining  to the  subject
matter of this Agreement.





13.6  Amendment  and Waiver.  This  Agreement may be amended,  supplemented,  or
otherwise modified at any time, but only by means of a written instrument signed
by all of the Parties.  Any waiver of any rights or failure to act in a specific
instance  shall  relate only to such  instance  and shall not be construed as an
agreement to waive any rights or fail to act in any other  instance,  whether or
not similar.

13.7  Governing Law. This  Agreement and the legal  relations  among the parties
shall be governed by and construed in  accordance  with the laws of the State of
Delaware,  USA,  irrespective  of  any  choice  of  laws  or  conflict  of  laws
principles.

13.8 Severability.  In the event that any provision of this Agreement shall, for
any  reason,  be  held to be  invalid  or  unenforceable  in any  respect,  such
invalidity or unenforceability  shall not affect any other provision hereof, and
this Agreement shall be construed as if such invalid or unenforceable  provision
had not been included herein.

13.9 Entire Agreement. This Agreement constitutes the entire agreement among the
Parties with respect to the subject  matter  hereof and  supersedes  any and all
prior or contemporaneous  oral and prior written agreements and  understandings.

13.10 Advice of Counsel. The Parties have each consulted counsel of their choice
regarding this Agreement,  and each  acknowledges and agrees that this Agreement
shall not be deemed to have been  drafted  by one party or  another  and will be
construed  accordingly.

13.11 Consents Not  Unreasonably  Withheld.  Whenever  provision is made in this
Agreement  for a Party to secure the  consent  or  approval  of any other,  that
consent or approval  shall not  unreasonably  be withheld,  and whenever in this
Agreement  provision  is made for a Party to object to or  disapprove  a matter,
such objection or disapproval shall not unreasonably be exercised.





13.12 Retained Rights.  Nothing in this Agreement shall limit in any respect the
right of any Party to  conduct  research  and  development  with  respect to and
market  products  outside the Field  using such  Party's  know-how.

13.13 Force  Majeure.  No Party shall lose any rights  hereunder or be liable to
any other  Party for damages or losses on account of failure of  performance  by
the  defaulting  Party if the failure is occasioned by government  action,  war,
fire,  explosion,  flood,  strike,  lockout,  embargo,  act of God, or any other
similar  cause beyond the control of the  defaulting  Party,  provided  that the
Party  claiming  force  majeure has exerted all  reasonable  efforts to avoid or
remedy such force majeure; provided,  however, that in no event shall a Party be
required  to settle  any  labor  dispute  or  disturbance.  Notwithstanding  the
foregoing,  this  Section  13.13  shall not  operate  to  relieve  a Party  from
performance  of any  obligation  for more than ninety (90) days.

13.14 Further  Actions.  Each Party agrees to execute,  acknowledge  and deliver
such further instruments,  and to do all such other acts, as may be necessary or
appropriate  in order to carry out the  purposes  and intent of this  Agreement.

13.15 No  Trademark  Rights.  Except as  otherwise  provided  herein,  no right,
express or implied, is granted by the Agreement to use in any manner the name of
any  Party,  or any  other  trade  name or  trademark  of the any  Party  or its
Affiliates in connection with the  performance of the Agreement.

13.16  Notices.  All notices  hereunder  shall be in writing and shall be deemed
given if delivered personally or by facsimile  transmission  (receipt verified),
telexed,  mailed by registered  or certified  mail (return  receipt  requested),
postage  prepaid,  or sent by express  courier  service,  to the  Parties at the
following  addresses  (or at such  other  addresses  for a  Party  as  shall  be
specified




by like notice; provided, that notices of a change of address shall be effective
only upon receipt thereof).

         If to DPC,
                  addressed to:     Vice-President
                                    Product Planning & Acquisition
                                    DuPont Pharmaceuticals Company
                                    974 Centre Road
                                    Chestnut Run Plaza, Walnut Run
                                    Wilmington, DE 19805
                  Phone:            (302) 992-4545
                  Facsimile:        (302) 992-3040

                  With a copy to:   Patent Department
                                    Chief Intellectual Property Counsel
                                    DuPont Pharmaceuticals Company
                                    974 Centre Road
                                    Chestnut Run Plaza, Walnut Run
                                    Wilmington, DE 19805
                                    Facsimile:   (302) 992-3999

         If to Janssen:

                  addressed to: President, JRF

                  Janssen Pharmaceutica N. V.
                  Turnhoutseweg 30
                  2340 Beerse, Belgium
                  Phone: (32 +14) 602111
                  Facsimile:   (32+14) 602841

                  With a copy to:   Office of General Counsel
                                    Johnson & Johnson
                                    One Johnson & Johnson Plaza
                                    New Brunswick, NJ 08933
                                    Facsimile:   732-524-2788

         If to Neurocrine:


                  addressed to: President & CEO

                  Neurocrine Biosciences Inc.
                  10555 Science Center Drive
                  San Diego, CA 92121
                  Phone: 858-658-7600
                  Facsimile:  858-658-7605

                  With a copy to:   General Counsel


Each of the Parties  consent to the personal  jurisdiction  of the U.S.  Federal
Courts  and agree to accept  any legal  process  served  upon such  Party at the
addresses  specified above for such Party.

13.17 Waiver.  Except as specifically  provided for herein, the waiver from time
to time by any Party of any of its rights or its failure to exercise  any remedy
shall not operate or be construed as a continuing waiver of same or of any other
of such Party's rights or remedies provided in this Agreement.

13.18  Compliance with Laws. The Parties shall comply with all applicable  laws,
rules,  regulations  and orders of the United  States  and  applicable  European
countries and  supra-governmental  organizations  and all  jurisdictions and any
agency or court thereof in connection  with this Agreement and the  transactions
contemplated thereby.







         IN WITNESS  WHEREOF,  the undersigned  have duly executed and delivered
this  Agreement  as a sealed  instrument  effective  as of the date first  above
written.
                                    ........JANSSEN PHARMACEUTICA, N.V.



                                    ........By:....../s/ Dr. Alan Dunton
                                    .................President


                                            NEUROCRINE BIOSCIENCES, INC.


                                    ........By:....../s/ Gary Lyons
                                    .................President



                                            DUPONT PHARMACEUTICALS COMPANY.

                                    ........By: ...../s/ Kurt M. Landgraf
                                    .................Kurt M. Landgraf
                                    .................Executive Vice-President &
                                                 Chief Operating Officer, DuPont






                                    Exhibit A
                             Arbitration Proceedings

1.1      (a)        Any  dispute,  controversy  or  claim  arising  out of or in
                    connection  with  or  relating  to  this  Agreement,  or the
                    interpretation, application, breach, termination or validity
                    thereof,  including  any  claim  of  inducement  by fraud or
                    otherwise, shall, before submission to arbitration, first be
                    mediated  through  non-binding  mediation in accordance with
                    the Model Procedures for the Mediation of Business  Disputes
                    promulgated by the Center for Public Resources  ("CPR") then
                    in effect,  except  where  those rules  conflict  with these
                    provisions,  in which case  these  provisions  control.  The
                    mediation shall be conducted in  Philadelphia,  PA and shall
                    be attended by a senior  executive with authority to resolve
                    the dispute from each of the  operating  companies  that are
                    Parties.

         (b)      The  mediator  shall be an attorney  specializing  in business
                  litigation who has at least 15 years of experience as a lawyer
                  with a law firm of over 25  lawyers  or was a judge of a court
                  of general  jurisdiction  and who shall be appointed  from the
                  list of neutrals maintained by CPR.

         (c)      The  Parties  shall  promptly  confer in an effort to select a
                  mediator  by  mutual  agreement.  In the  absence  of  such an
                  agreement,   the  mediator  shall  be  selected  from  a  list
                  generated  by CPR with each Party having the right to exercise
                  challenges  for cause  and two  peremptory  challenges  within
                  three business days of receiving the CPR list.

         (d)      The   mediator   shall  confer  with  the  Parties  to  design
                  procedures  to  conclude  the  mediation  within  no more than
                  forty-five (45) days after  initiation.  Unless agreed upon by
                  the  Parties  in  writing,  under no  circumstances  shall the
                  commencement  of  arbitration  under  Section  1.2  hereof  be
                  delayed  more  than  forty-five  (45)  days  by the  mediation
                  process specified herein.

         (e)      Each  Party  agrees  to  toll  all   applicable   statutes  of
                  limitation  during the  mediation  process  and not to use the
                  period or pendency of the mediation to disadvantage  the other
                  Party procedurally or otherwise.  All negotiations pursuant to
                  this  clause  will be  confidential  and shall be  treated  as
                  compromise and settlement negotiations for the purposes of the
                  Federal Rules of Evidence and all other evidentiary purposes.

         (f)      Each Party has the right to pursue provisional relief from any
                  court, such as attachment,  preliminary injunction,  replevin,
                  etc., to avoid irreparable  harm,  maintain the status quo, or
                  preserve the subject  matter of the  arbitration,  even though
                  mediation has not been commenced or completed.

1.2     (a)       Following the mediation  procedures set forth in Exhibit A
                  Section 1.1, any dispute,  controversy or claim arising out of
                  or in connection  with or relating to this  Agreement,  or the
                  interpretation,  application,  breach, termination or validity
                  thereof,  including  any  claim  of  inducement  by  fraud  or
                  otherwise,  will be submitted for  resolution  to  arbitration
                  pursuant to the commercial  arbitration  rules then pertaining
                  of the Center for Public Resources ("CPR"), except where those
                  rules  conflict  with  these  provisions,  in which case these
                  provisions   control.   The   arbitration   will  be  held  in
                  Philadelphia, PA.

         (b)      The panel shall consist of three  arbitrators  chosen from the
                  CPR Panels of Distinguished  Neutrals each of whom is a lawyer
                  specializing  in  business  litigation  with at least 15 years
                  experience  with a law firm of over 25  lawyers or was a judge
                  of a court of general jurisdiction.

         (c)      The Parties agree to cooperate (1) to obtain  selection of the
                  arbitrators  within  thirty  (30)  days of  initiation  of the
                  arbitration,  (2) to meet with the  arbitrators  within thirty
                  (30) days of  selection  and (3) to agree at that  meeting  or
                  before upon  procedures for discovery and as to the conduct of
                  the hearing which will result in the hearing  being  concluded
                  within no more than nine (9)  months  after  selection  of the
                  arbitrators  and in the award being rendered within sixty (60)
                  days of the conclusion of the hearings, or of any post-hearing
                  briefing,  which  briefing  will be  completed by both Parties
                  with twenty (20) days after the conclusion of the hearings. In
                  the event no such  agreement  is reached,  the CPR will select
                  arbitrators,  allowing  appropriate  strikes  for  reasons  of
                  conflict or other cause and three  peremptory  challenges  for
                  each side. The  arbitrators  shall set a date for the hearing,
                  commit to the rendering of the award within sixty (60) days of
                  the  conclusion  of the  evidence  at the  hearing,  or of any
                  post-hearing  briefing  (which  briefing  will be completed by
                  both  sides  in no  more  than  twenty  (20)  days  after  the
                  conclusion  of  the  hearings),   and  provide  for  discovery
                  according  to these time  limits,  giving  recognition  to the
                  understanding  of the  Parties  hereto  that they  contemplate
                  reasonable   discovery,   including   document   demands   and
                  depositions,  but that such  discovery  be limited so that the
                  time  limits   specified  herein  may  be  met  without  undue
                  difficulty. In no event will the arbitrators allow either side
                  to obtain more than a total of forty (40) hours of  deposition
                  testimony from all  witnesses,  including both fact and expert
                  witnesses.  In the event  multiple  hearing days are required,
                  they will be scheduled  consecutively  to the greatest  extent
                  possible.

         (d)      The  arbitrators   shall  render  their  award  following  the
                  substantive law of Delaware.  The arbitrators  shall render an
                  opinion  setting forth findings of fact and conclusions of law
                  with the reasons therefor stated. A transcript of the evidence
                  adduced at the hearing shall be made and shall,  upon request,
                  be made available to either Party.

         (e)      To the extent  possible,  the  arbitration  hearings and award
                  will be maintained in confidence.

         (f)      Any United States  District Court having  jurisdiction  of the
                  matter may enter  judgment  upon any  award.  In the event the
                  panel's  award  exceeds Five Million  Dollars  (5,000,000)  in
                  monetary damages or includes or consists of equitable  relief,
                  then the court shall vacate, modify or correct any award where
                  the  arbitrators'  findings  of fact  are  clearly  erroneous,
                  and/or  where  the   arbitrators'   conclusions   of  law  are
                  erroneous;  in other words,  it will undertake the same review
                  as if it were a federal  appellate  court reviewing a district
                  court's findings of fact and conclusions of law rendered after
                  a bench  trial.  An award for less than Five  Million  Dollars
                  (5,000,000) in damages and not including  equitable relief may
                  be  vacated,  modified  or  corrected  only  upon the  grounds
                  specified in the Federal  Arbitration Act. The Parties consent
                  to the  jurisdiction of the District Court for the enforcement
                  of these  provisions,  the entry of judgment on any award, and
                  the vacatur, modification and correction of any award as above
                  specified.

         (g)      Each Party has the right before or during the  arbitration  to
                  seek  and  obtain  from  the  appropriate   court  provisional
                  remedies such as attachment, preliminary injunction, replevin,
                  etc. to avoid  irreparable  harm,  maintain the status quo, or
                  preserve the subject matter of the arbitration.

         (h)      Each  Party  hereto  waives its right to trial of any issue by
                  jury.

         (i)      Each Party hereto waives any claim to punitive,  exemplary and
                  consequential damages from the other.