Exhibit 10.3

                      SUB-LICENSE AND DEVELOPMENT AGREEMENT

         THIS  AGREEMENT is effective this 30th day of June 1998, by and between
DOV  Pharmaceutical,  Inc., a New Jersey  corporation,  with offices at 1 Parker
Plaza, Suite 1500 Fort Lee, New Jersey 07024 ("DOV") and Neurocrine Biosciences,
Inc., a Delaware  corporation with offices at 3050 Science Park Road, Suite 405,
San Diego, California 92121 ("Neurocrine").


                                   WITNESSETH:

         WHEREAS,  DOV possesses  rights to a certain  chemical  compound and to
pharmaceutical  products to be processed from the Compound,  such rights arising
from the License Agreement (defined below); and

         WHEREAS,  Neurocrine desires to acquire, and DOV is willing to grant to
Neurocrine, an exclusive sublicense to the patent rights and know-how,  relating
to that certain chemical compound.

         NOW  THEREFORE,  in  consideration  of the  promises  and of the mutual
covenants and obligations set forth herein, the parties hereto agree as follows:


                                    ARTICLE 1
                                   Definitions

         1.1      "Affiliate"  means with  respect to a party,  any other entity
                  which directly or indirectly controls, is controlled by, or is
                  under  common  control  with,  such party.  An entity or party
                  shall be regarded as in control of another  entity if it owns,
                  or directly or  indirectly  controls,  at least fifty  percent
                  (50%) of the voting stock or other ownership  interest of such
                  entity, or if it directly or indirectly possesses the power to
                  direct or cause the direction of the  management  and policies
                  of the other entity by any means whatsoever.

         1.2      "Compound" means the chemical compound described in Exhibit 1.

         1.3      "DOV's Corporate Office" means 1 Parker Plaza, Suite 1500, 
                   Fort Lee, New Jersey.

         1.4      "FDA" means the United States Food and Drug Administration.

         1.5      "IND" means an investigational new drug as defined in 21 
                   CFR Part 312.





         1.6      "Know-How" means all ideas,  inventions,  data,  instructions,
                  processes,   formulas,   expert   opinions  and   information,
                  including,   without   limitation,    biological,    chemical,
                  pharmacological,  toxicological,  pharmaceutical, physical and
                  analytical,   clinical,  safety,   manufacturing  and  quality
                  control  data  and  information,   in  each  case,  which  are
                  necessary  or useful  for and are  specific  to the  research,
                  design, development,  testing, use, manufacture or sale of the
                  Compound or a Licensed Product.

         1.7      "License  Agreement" means the license  agreement  between DOV
                  and  American  Cyanamid  Company  ("ACY")  dated May 29,  1998
                  attached as Exhibit 2.

         1.8      "Licensed Product"means any product based upon or derived from
                  the Compound and approved for sale by the USFDA or its foreign
                  equivalent.

         1.9      "NDA"  means a new drug  application  submitted  to the United
                  States Food and Drug Administration in accordance with Section
                  505 of the  Federal  Food,  Drug  and  Cosmetic  Act  and  its
                  implementing  regulations,  or a comparable filing in Japan or
                  within the EU.

         1.10     "Net Sales" means the gross  amount  invoiced for the Licensed
                  Product   sold  by   Neurocrine   or  its   Affiliate  or  its
                  sublicensee, less:

                  (1)      transportation charges or allowances, if any;

                  (2)      trade, quantity or cash discounts, service allowances
                           and   broker's  or  agent's   commissions,   but  not
                           salaries, commissions, bonuses or other incentive pay
                           to in-house sales or other personnel, if any, allowed
                           or paid;

                  (3)      credits  or  allowances,  if  any,  given  or made on
                           account  of price  adjustments,  returns,  bad debts,
                           off-invoice  promotional discounts,  rebates, and any
                           or all  federal,  state or local  government  rebates
                           whether  in  existence  now or  enacted  at any  time
                           during  the  term  of  the  Agreement,   recalls,  or
                           destruction  requested  or  made  by  an  appropriate
                           government agency; and

                  (4)      Any  tax,  excise  or  governmental  charge  upon  or
                           measured by the sale, transportation, delivery or use
                           of the Licensed  Product;  provided that,  other than
                           pursuant to Section 1.5(e) below,  Net Sales shall in
                           no event be less than 80% of Gross Sales.

                  (5)      In the case of  discounts on "bundles" of products or
                           services  which  include  Licensed  Products  or  the
                           Compound,  the selling  Party may, with notice to the
                           other Party,  calculate Net Sales by discounting  the
                           bona fide list price of such  product by the  average
                           percentage  discount  of all  products of the selling
                           party  and/or its  Affiliates  or  sublicensees  in a
                           particular "bundle", calculated as follows:

                           Average percentage
                           discount on a             = (1-A/B) x 100
                           particular "bundle"

                  where A equals  the  total  discounted  price of a  particular
                  "bundle" of products, and B equals the sum of the undiscounted
                  bona fide list  prices of each unit of every  product  in such
                  "bundle".  The  selling  party  shall  provide the other party
                  documentation,  reasonably  acceptable  to  the  other  party,
                  establishing  such  average  discount  with  respect  to  each
                  "bundle",  Net Sales shall be based on the  undiscounted  list
                  price  of  the  Licensed  Products  or  the  Compound  in  the
                  "bundle".  If a Licensed Product or the Compound in a "bundle"
                  is not sold  separately and no bona fide list price exists for
                  such  Licensed  Product or the  Compound,  the  Parties  shall
                  negotiate  in good  faith  an  imputed  list  price  for  such
                  Licensed  Product or the Compound,  and Net Sales with respect
                  thereto shall be based on such imputed list price.

         1.11     "Phase  I"  means  that  portion  of the  FDA  submission  and
                  approval process that provides for the first introduction into
                  humans of the Licensed Product with the purpose of determining
                  human toxicity, metabolism,  absorption, elimination and other
                  pharmacological  action  as more  fully  defined  in 21 C.F.R.
                  ss.213.2(a).

         1.12     "Phase  II"  means  that  portion  of the FDA  submission  and
                  approval  process that provides for the initial  trials of the
                  Licensed  Product  on a  limited  number of  patients  for the
                  purposes  of  determining  dose  and  evaluating   safety  and
                  efficacy in the proposed therapeutic  indication as more fully
                  defined as 21 C.F.R. ss.213.21(b).

         1.13     "Phase  III" means  that  portion  of the FDA  submission  and
                  approval  process that  provides for  continued  trials of the
                  Licensed   Product  on  sufficient   numbers  of  patients  to
                  establish the safety and efficacy of the Licensed  Product and
                  generate pharmacoeconomics date to support regulatory approval
                  in the proposed  therapeutic  indication as more fully defined
                  in 21 C.F.R.
                  ss.312.21(c).





         1.14     "Pre-Phase  I" means that portion of the  development  program
                  that starts with the  selection of a compound for  development
                  into the Licensed  Product or the  beginning of  toxicological
                  studies  relating  to such  compound.  Pre-Phase  I  includes,
                  without  limitation,  toxicological,  pharmacological  and any
                  other  studies,  the results of which are  required for filing
                  with an  IND,  as well as  Licensed  Product  formulation  and
                  manufacturing  development  necessary to obtain the permission
                  of  regulatory  authorities  to begin and continue  subsequent
                  human   clinical   testing.   Toxicology,   as  used  in  this
                  definition, means full scale toxicology using "Good Laboratory
                  Practices" for obtaining approval from a regulatory  authority
                  to administer the Licensed Product to humans.  This toxicology
                  is distinguished  from initial dose range finding  toxicology,
                  which  usually  includes a single and  repeated  dose  ranging
                  study  in two  species  with  less  than  half of the  animals
                  required  by the FDA,  an Ames test and a  related  chromosome
                  test.

         1.15     "Patent  Rights" means all United  States and foreign  patents
                  (including    all   reissues,    extensions,    substitutions,
                  confirmations,       re-registrations,        re-examinations,
                  revalidations and patents of addition) and patent applications
                  (including,    without    limitation,    all    continuations,
                  continuations-in-part  and  divisions  thereof)  in each case,
                  claiming an  invention  which is  necessary  or useful for the
                  design, development,  testing, use, manufacture or sale of the
                  Compound or a Licensed Product.

         1.16     "Pivotal  Trial"  means the ***] study  which  is  one of two 
                  Phase III  registerable  trials and which is comparable to and
                  of the same magnitude  as  the  trial described  in  Exhibit 3
                  hereto.

         1.17     "Territory" means all countries of the world.

         1.18     "Valid  Claim" means a claim of a pending  patent  application
                  within the Patent Rights  (provided such  application  has not
                  been  pending  for more than  [***] from the date it was first
                  filed with the  governmental  agency  with  jurisdiction  over
                  patent   applications)  or  an  issued  and  unexpired  patent
                  included  within  the  Patent  Rights  that has not been  held
                  unenforceable  or  invalid  by a court or  other  governmental
                  agency  of  competent  jurisdiction,  and  that  has not  been
                  disclaimed or admitted to be invalid or unenforceable  through
                  reissue or otherwise.


                                    ARTICLE 2
                                  License Grant

         As  of  the  effective  date  of  this  Agreement,  DOV  hereby  grants
Neurocrine an exclusive sublicense to DOV's interest under the License Agreement
in the Patent Rights and Know-How to make,  have made,  use,  import,  offer for
sale and sell the Compound and the Licensed  Product in the Territory,  with the
right to grant sublicenses.


                                    ARTICLE 3
                             Development Activities






         3.1      As  soon  as  practicable  after  the  effective  date of this
                  Agreement,  Neurocrine  shall commence,  adequately  fund, and
                  pursue a worldwide  research and  development  program for the
                  development  of the Licensed  Product ("R & D Program")  using
                  commercially reasonable and diligent efforts in its conduct of
                  the R & D Program in accordance  with  Neurocrine's  usual and
                  customary   practices  for  products  of  similar   commercial
                  potential and value.

         3.2      Management   of  the  R  &  D  Program  will  be  provided  by
                  Neurocrine.  Arnold Lippa and Bernard Beer, upon  Neurocrine's
                  request,   will  provide  reasonable   consultative   services
                  pursuant to consulting  agreements  substantially  in the form
                  set forth on Exhibit 4.

         3.3      Neurocrine  shall provide to DOV, on a [***] basis  throughout
                  the term of this  Agreement a written report setting forth the
                  efforts  (and  results of such  efforts)  taken by  Neurocrine
                  pertaining to the R & D Program,  including [***].  Neurocrine
                  shall  provide  such  reports  until  the  R  & D  Program  is
                  terminated,  or upon the first sale of the Licensed Product in
                  the United States, Japan or within the EU.

         3.4      If  Neurocrine  terminates  the R&D  Program  or halts all R&D
                  Program  activities for a period of [***] or longer within the
                  United States (for reasons other than regulatory constraints),
                  DOV shall have the right to terminate  this  Agreement  within
                  the entire  Territory,  or any country  within the  Territory,
                  effective  upon  Neurocrine's  receipt  of  written  notice of
                  termination from DOV. If Neurocrine terminates the R&D Program
                  or halts  all R&D  activities  for a period of [***] or longer
                  within any other country of the  Territory  (for reasons other
                  than  regulatory  constraints)  DOV  shall  have the  right to
                  terminate this Agreement  within such country,  effective upon
                  Neurocrine's  receipt of  written  notification  from DOV.  In
                  either  such  event  DOV  will  be  entitled  to any  payments
                  previously paid to, or which have accrued to DOV.


                                    ARTICLE 4
                              Development Payments

         4.1      In  consideration  of the  rights  granted  to  Neurocrine  in
                  Article 2, herein, Neurocrine shall pay to DOV a licensing fee
                  of $5,000 upon the execution of this Agreement.

         4.2      Neurocrine  shall make  scheduled  payments and issue warrants
                  for the purchase of shares of  Neurocrine's  capital  stock to
                  DOV in the amounts, and at the times, stated below:






                           US [***] plus  warrants to purchase  75,000 shares of
                           Neurocrine  common stock, upon [***] for the Licensed
                           Product.  A  warrant  to  purchase  15,000  shares of
                           Neurocrine  common stock shall have an exercise price
                           equal to the Market Price, as defined  herein,  as of
                           the effective  date of this  Agreement.  Such warrant
                           shall be  exercisable,  at any  time,  in whole or in
                           part,   from  the  grant  date   through   the  fifth
                           anniversary  of the grant date. A warrant to purchase
                           60,000 shares of  Neurocrine  common stock shall have
                           an  exercise  price  equal to the  Market  Price,  as
                           defined herein, as of the date that the first Pivotal
                           Trial  commences.  Such warrant shall be exercisable,
                           at any time, in whole or in part, from the grant date
                           through the fifth anniversary of the grant date. Upon
                           approval  by a majority of the  signatories  thereto,
                           Neurocrine's New Registration  Rights Agreement dated
                           March 29,  1996  shall be  amended  to  include  such
                           warrant in the definition of "Registrable Securities"
                           thereunder,  those shares of Neurocrine  common stock
                           issuable upon exercise of such warrants. The terms of
                           the warrants shall be  substantially  as set forth as
                           the Form of Warrant  attached  to this  Agreement  as
                           Exhibit 5. For purposes of this Article 4.2,  "market
                           price"  shall mean the mean of the  closing  price of
                           Neurocrine's  common  stock as quoted on the National
                           Association  of  Security  Dealers,   Inc.  Automated
                           Quotation  System or such other  national  securities
                           exchange  or  over-the-counter  market on which  such
                           common stock is quoted for the twenty  business  days
                           prior to the date of this Agreement,  and at the date
                           that  the   first   Pivotal   Trial   is   commenced,
                           respectively.

                           [***].

                           [***].


                                    ARTICLE 5
                                    Royalties

         5.1      In  consideration  of the rights  granted in Article 2 hereof,
                  and in addition to the  payments  and issuance of warrants set
                  forth in Article 4 herein,  Neurocrine shall pay to DOV during
                  the term of this  Agreement,  on a  country-by-country  basis,
                  royalties  consisting  of  [***]  of  Net  Sales  of  Licensed
                  Product.






         5.2      If  within  any  country  of  the   Territory   (I)  marketing
                  exclusivity is lost to Neurocrine or its sublicensee  prior to
                  the expiration of this Agreement and (ii) the manufacture, use
                  or sale of a Licensed Product would not infringe a Valid Claim
                  of a patent within the Patent Rights, then the royalty rate on
                  the Net Sales of such Licensed  Product which would  otherwise
                  be  payable  to DOV by  Neurocrine  will be  reduced to a rate
                  which is equal to the [***].

         5.3      All royalty payments shall be made in U.S. dollars,  Net Sales
                  shall be  converted  on a  country-by-country  basis  from the
                  currency used in each such country to United  States  Dollars.
                  The  applicable  exchange rate shall be the rate quoted in the
                  Wall Street Journal on the last business day of the period for
                  which  royalties are being  calculated.  All royalty  payments
                  shall be made in United  States  Dollars and remitted to DOV's
                  Corporate Office.

         5.4      Within thirty (30) days after the end of [***] during the term
                  of this  Agreement,  Neurocrine  shall pay to DOV the  royalty
                  payment due for those three months.

                  Together with [***] royalty  payment,  Neurocrine shall submit
                  to  DOV  a  written  accounting  showing  its  computation  of
                  royalties  due under this  Agreement  for such  three  months,
                  which shall set forth gross  sales,  Net Sales,  the  specific
                  deductions  used in  arriving  at Net  Sales,  and  the  total
                  royalties due for the [***] in question. Such accounting shall
                  be on a country-by-country basis within the Territory.




         5.5      Neurocrine  shall  keep full and  accurate  books and  records
                  setting forth gross sales, Net Sales, the specific  deductions
                  used in  arriving  at Net  Sales and the  amount of  royalties
                  payable to DOV  hereunder for no less than [***] after the end
                  of each year  during  the term of this  Agreement.  Neurocrine
                  shall  permit DOV, to have such books and records  examined by
                  an independent certified public accountant retained by DOV and
                  acceptable to Neurocrine,  during regular  business hours upon
                  reasonable   advance  notice.   Such  accountant   shall  keep
                  confidential any information  obtained during such examination
                  and shall report to DOV,  only the amounts of royalties  which
                  he or she  believes  to be due and payable  hereunder.  In the
                  event of a difference of opinion  between such  accountant and
                  Neurocrine  as to the  amount of  royalties  which are due and
                  payable,  the parties  hereto  shall use their best efforts to
                  resolve  such  differences.  If they  cannot do so, each party
                  will  appoint  one  additional  independent  certified  public
                  accountant,  and those two individuals will jointly appoint an
                  additional independent certified public accountant. A majority
                  decision of those three  accountants  will be conclusive as to
                  the  amount  of  royalties  which  are  due and  payable.  The
                  expenses of this dispute  resolution  procedure  will be borne
                  equally by Neurocrine and DOV.


                                    ARTICLE 6
                                 Confidentiality

                  If, during the performance of this Agreement, one party hereto
                  discloses   information   to  the  other  which  it  considers
                  confidential,   such   information  may  not  be  subsequently
                  disclosed by the receiving party to a third party, without the
                  written  permission of the  disclosing  party.  The parties to
                  this Agreement  agree to hold in confidence  all  information;
                  including,  but not  limited to, all  information  that is the
                  subject   of   this   Agreement,   Know-How,   marketing   and
                  manufacturing practices,  processes,  product information,  or
                  financial  information disclosed or submitted in writing or in
                  other tangible form which is considered to be confidential for
                  a period of five (5) years  from the date of such  disclosure,
                  except:

                  (1)      information, which at the time of disclosure, is in 
                           the public domain;

                  (2)      information,  which after disclosure, is published or
                           otherwise  becomes part of the public domain  through
                           no fault of the receiving party;

                  (3)      information  which  was in the  possession  of  the
                           receiving  party  at  the  time  of disclosure;

                  (4)      information which is developed by or on behalf of the
                           receiving  party  independently  of any disclosure to
                           them by the disclosing party hereunder; or

                  (5)      information  which is provided to the receiving party
                           by a third party with the right to so provide.


                                    ARTICLE 7
                               Adverse Experiences

         7.1      During the term of this Agreement,  Neurocrine shall keep, and
                  shall cause its  sublicensees  to keep DOV  promptly and fully
                  informed of all pharmaceutical,  toxicological,  clinical, and
                  all  other   findings,   including   clinical  use,   studies,
                  investigations,   tests  and  prescription,  relating  to  any
                  adverse experiences with the Licensed Product.




         7.2      Neurocrine  undertakes to notify DOV, as soon as possible,  of
                  any  serious  adverse  event as such  event is  defined by the
                  responsible  regulatory agency in the United States, Japan, or
                  within the EU, thought to be associated with clinical  studies
                  of, or the use or application of, the Licensed  Product.  Such
                  notification shall be made promptly but in no event later than
                  five (5) working days after  Neurocrine first learns of, or is
                  advised of, any adverse event described above.

         7.3      Neurocrine shall inform DOV without delay, of any governmental
                  action,  correspondence  or  reports  to or from  governmental
                  authorities  which may affect the continued  distribution  and
                  sale of the  Licensed  Product  and furnish DOV with copies of
                  any relevant documents relating thereto.


                                    ARTICLE 8
                               Patent Infringement

         8.1      In case any  actions,  claims,  demands,  suits or other legal
                  proceedings  are brought or threatened  to be brought  against
                  Neurocrine,  its Affiliates or sublicensees,  by a third party
                  for infringement of such third party's patent(s), by virtue of
                  Neurocrine's  manufacture,  use, sale or offer for sale of the
                  Licensed Product, Neurocrine shall notify DOV forthwith of the
                  threat or existence of such actions with  sufficient  evidence
                  thereof,  to enable the  parties  to  prepare  an  appropriate
                  defense strategy. The parties shall consult together as to the
                  action to be taken and as to how the defense  will be handled.
                  [***].

                  Neurocrine  undertakes  not to make any admission of liability
                  to  a  claimant  or   plaintiff  or  his,  her  or  its  legal
                  representative  or insurer  and not to sign any  agreement  in
                  respect of such proceedings  adversely affecting the rights of
                  DOV [***], which will not be unreasonably withheld.

                  If  Neurocrine,  because  of any  settlement  of  the  claimed
                  infringement or a final unappealable or non-appealed  judgment
                  of a court of  competent  jurisdiction,  is  required  to make
                  payments  to one or more  third  parties  to  obtain a license
                  without which the marketing of the Licensed  Product could not
                  be  made  in a  given  country,  Neurocrine  may  deduct  such
                  payments  from  the  royalty  payments  due to DOV  hereunder,
                  provided  however  that in no event shall the royalty  rate be
                  reduced by more than [***] of that which  would  otherwise  be
                  due to DOV.

         8.2      Neurocrine  shall promptly inform DOV of any suspected  patent
                  infringement  by a  third  party  and  provide  DOV  with  any
                  available evidence of such suspected infringement.




                  DOV shall have the right but not the  obligation  to institute
                  any  claim,  suit or  proceeding  against  an  infringer  or a
                  presumed  infringer.  DOV shall control the prosecution of any
                  such suit, claim or proceeding, including, without limitation,
                  the choice of counsel and any  settlement  of any such suit or
                  claim.  Neurocrine  shall  provide  DOV  with  all  reasonable
                  assistance  (other than  financial)  required to institute and
                  maintain such proceedings.

                  Neurocrine  shall only have the right to institute  any claim,
                  suit  or  proceeding   against  an  infringer  or  a  presumed
                  infringer  in the event  that DOV elects not to do so. In such
                  event,  Neurocrine  shall control the  prosecution of any such
                  suit, claim or proceeding,  including, without limitation, the
                  choice  of  counsel  and any  settlement  of any such  suit or
                  claim.  DOV  shall  provide  Neurocrine  with  all  reasonable
                  assistance  (other than  financial)  required to institute and
                  maintain   such   proceedings.    During   such   proceedings,
                  Neurocrine's  royalty  obligations  to DOV shall be reduced to
                  the greater of [***] of the royalty payable  hereunder and the
                  royalty  rate that DOV owes to ACY at that time.  Any proceeds
                  from such  proceedings  shall first be  allocated to reimburse
                  Neurocrine  for its  costs  in  such  proceedings,  second  to
                  reimburse DOV for its lost royalty  revenue during such period
                  and the remainder to Neurocrine.  In the event that Neurocrine
                  is not successful in its suit, DOV shall not be reimbursed for
                  any lost royalty revenue.

                                    ARTICLE 9
                    Indemnification, Liability and Insurance

         9.1      Neurocrine, in the absence of negligence or willful misconduct
                  on the part of DOV, its Affiliates and  sublicensees and their
                  respective   employees,   agents,   officers,   directors  and
                  permitted assigns,  shall at all times during the term of this
                  Agreement and thereafter,  indemnify,  defend and hold DOV and
                  its respective directors,  officers, partners,  employees, and
                  agents  harmless  from  and  against  any and all  claims  and
                  expenses, including, without limitation, legal expenses, court
                  costs,  and  reasonable  attorney's  fees,  arising  out of or
                  relating  to the death of or actual or  alleged  injury to any
                  person(s)  or damage  to third  party  property,  and from and
                  against  any other  third  party  claim,  proceeding,  demand,
                  expense,   cost  and   liability   of  any   kind   whatsoever
                  (collectively "liabilities") resulting from, arising out of or
                  related to product  liability  claims  involving  the Licensed
                  Product.




         9.2      DOV, in the absence of negligence or willful misconduct on the
                  part of Neurocrine,  its Affiliates and sublicensees and their
                  respective   employees,   agents,   officers,   directors  and
                  permitted  assigns  shall at all times during the term of this
                  Agreement   and   thereafter,   indemnify,   defend  and  hold
                  Neurocrine and its respective directors,  officers,  partners,
                  employees,  and agents  harmless  from and against any and all
                  claims  and  expenses  including,  without  limitation,  legal
                  expenses,  court costs and reasonable  attorney's fees arising
                  out of, or  relating  to,  the  death of or actual or  alleged
                  injury to any person(s) or damage to third party property, and
                  from and  against  any other  third-party  claim,  proceeding,
                  demand,  expense,  cost and  liability of any kind  whatsoever
                  resulting from,  arising out of, or related to DOV's breach of
                  Article 10.9 herein,  and any actions taken by DOV  pertaining
                  to the  Compound or Licensed  Product  prior to the  effective
                  date of this Agreement.

         9.3      Neurocrine  shall  maintain,   and  cause  any  sublicense  to
                  maintain,  a product  liability  insurance  program  which may
                  include  funded  self-insurance   reserves,   with  additional
                  coverage by a  nationally-recognized  insurance carrier,  with
                  respect  to  the  development,  manufacture  and  sale  of the
                  Licensed  Product.  Coverage  shall be in such  amounts as are
                  customary within the industry.  Neurocrine and any sublicensee
                  shall  maintain such  insurance  program for so long as it, or
                  any sublicensee, continues to develop, manufacture or sell the
                  Licensed  Product  and  thereafter  for so long as required to
                  cover manufacture or sales of distributed Licensed Product.

         9.4      Neurocrine  (and  its  sublicensee)  will  name DOV and ACY as
                  additional   insureds  on  its  product  liability   insurance
                  policies.  Upon execution of this  Agreement,  Neurocrine will
                  supply DOV with evidence of such coverage, and Neurocrine will
                  inform  DOV,  during  the  term  of  this  Agreement,  of  any
                  modifications to such coverages.


                                   ARTICLE 10
                         Warranties and Representations

         10.1     Neurocrine  represents  and warrants  that it is a corporation
                  duly  organized,  validly  existing and in good standing under
                  the laws of Delaware.

         10.2     Neurocrine  represents and warrants that it has full corporate
                  authority to enter into, and to perform this Agreement.

         10.3     Neurocrine  represents and warrants that it is fully cognizant
                  of Good Laboratory  Practices  ("GLP") and Good  Manufacturing
                  Practices  ("GMP")  as set forth by the FDA,  and that it, and
                  any  sublicensee,  shall  manufacture,  or have  manufactured,
                  Licensed Product in full compliance with GLP and GMP.

         10.4     Neurocrine  represents  and  warrants  that  the  terms of any
                  sublicense it grants in accordance with Article 2 herein, will
                  not be  inconsistent  with the terms of this  Agreement or the
                  License  Agreement  between  DOV and ACY  attached  hereto  as
                  Exhibit I.

         10.5     Neurocrine  represents and warrants that it has full corporate
                  authority  to issue the  warrants  referred to in Article 4.2,
                  herein  and  that  it  shall  have  a  sufficient   amount  of
                  authorized  shares  of  capital  stock to which  the  warrants
                  apply.






         10.6     DOV  represents  and warrants  that it is a  corporation  duly
                  organized,  validly  existing and in good  standing  under the
                  laws of New Jersey.

         10.7     DOV represents  and warrants that it has full  corporate  
                  authority to enter into, and to perform this Agreement.

         10.8     DOV represents and warrants that it has the right to grant the
                  sub-license to Neurocrine set forth in Article 2 herein.

         10.9     DOV represents and warrants that all  representations  made by
                  it to Neurocrine  pertaining  to Licensed  Product are true to
                  the best of DOV's knowledge.


                                   ARTICLE 11
                                   Assignment

                  This Agreement  shall be binding upon and inure to the benefit
                  of the parties hereto and the successors to substantially  the
                  entire  business and assets of the respective  parties hereto.
                  Notwithstanding  the  foregoing,   any  party  may  void  this
                  Agreement  if the  Agreement  is assigned for the benefit of a
                  creditor.  This  Agreement  shall not be  assignable by either
                  party,  except to an  Affiliate,  without the prior consent of
                  the other party; any other attempted assignment is void.


                                   ARTICLE 12
                                 Payments to ACY

                  DOV shall be responsible  for all payments due to ACY pursuant
                  to the  License  Agreement,  a true copy of which is  attached
                  hereto as Exhibit 1.


                                   ARTICLE 13
                                 Applicable Law

                  This Agreement shall be governed by and construed according to
                  the laws of the State of Delaware.

                                   ARTICLE 14
                                  Force Majeure




                  None of the parties shall be responsible  for failure or delay
                  in the performance of any of its obligations  hereunder due to
                  Force  Majeure.  Force  Majeure  shall mean any  circumstances
                  which,  due to an event or a legal position beyond the party's
                  reasonable control, shall render impossible the fulfillment of
                  any of the  party's  obligations  hereunder,  such as, but not
                  limited to,  acts of God,  acts,  regulations,  or laws of any
                  government, war, civil commotion, destruction of facilities or
                  materials   by   fires,   earthquakes,    or   storms,   labor
                  disturbances,  shortages of public utilities, common carriers,
                  or raw  materials,  or any other  cause,  or causes of similar
                  effects, except, however, any economic occurrence.  During any
                  such case of Force Majeure,  this License  Agreement shall not
                  be  terminated,  but only  suspended and the party so affected
                  shall continue to perform its obligations as soon as such case
                  of Force Majeure is removed or alleviated.


                                   ARTICLE 15
                              Term and Termination

         15.1     This Agreement shall continue in full force and effect in each
                  country  of  the  Territory  until  the  later  of  the  final
                  expiration  of a patent  covering the Compound or the Licensed
                  Product  in  such  country,  or a  period  of ten  (10)  years
                  following the first sale of Licensed  Product by Neurocrine or
                  its sublicensee in such country.

         15.2     Upon  expiration  of  this  Agreement,  with  respect  to each
                  country of the Territory, Neurocrine shall be deemed to have a
                  full-paid, royalty-free license with the right to make or have
                  made,  use or sell the Compound  and the  Licensed  Product as
                  well as to freely  utilize  all data  generated  hereunder  or
                  received from DOV by Neurocrine, without further obligation to
                  DOV,  except for  maintaining  confidentiality  as required by
                  Article 6 of this Agreement.

         15.3     In the event  that a party  hereto  shall be  presumed  by the
                  other  to  have   breached  any  material   condition   herein
                  contained,  the  complaining  party  shall  provide  a written
                  notice  of  such  presumed  breach,  requesting  rectification
                  within a thirty  (30) day  period  from the date of receipt of
                  such  notice.  The  party  presumed  to be in  breach  of  the
                  Agreement  shall either submit a commercially  reasonable plan
                  for  rectification  within 15  (fifteen)  days of  receipt  of
                  notice (if the breach  cannot be  rectified  within the thirty
                  (30) day  period),  or take  appropriate  steps to remedy  the
                  breach within such period.  If, within such thirty-day period,
                  neither the aforesaid plan shall have been submitted,  nor the
                  breach cured,  the party claiming  breach shall be entitled to
                  [***]written notice to the other party, [***].

         15.4     This  Agreement may be terminated  immediately by either party
                  by  giving  notice  to the  other  party if such  other  party
                  becomes  insolvent or has committed an act of bankruptcy or if
                  an order or  resolution  is made  for the  winding  up of such
                  other party.






         15.5     In the event that this Agreement is terminated by DOV prior to
                  is full term  pursuant  to  Article  15.3,  or  Article  15.4,
                  herein,  Neurocrine  shall,  as soon as  reasonably  possible,
                  transfer, or authorize the transfer of, [***] to DOV. Any such
                  transfers or transfer  authorizations  shall be in writing and
                  acceptable, in form, to DOV.

         15.6     Article 6 and Section 16.9 shall survive termination of this
                  agreement.



                                   ARTICLE 16
                                  Miscellaneous

         16.1     This Agreement  constitutes the full understanding between the
                  parties  and  supersedes  any and all  prior  oral or  written
                  understandings  and  agreements  with  respect to the  subject
                  matter  hereof.  No  terms,   conditions,   understandings  or
                  Agreements  purporting to modify, amend or vary this Agreement
                  shall be  binding  unless  made in  writing  and signed by the
                  parties hereto.

         16.2     The invalidity or  unenforceability  of an Article or any part
                  of an Article of this Agreement in any jurisdiction  shall not
                  cause  the  invalidity  of the  entire  Agreement  as to  such
                  jurisdiction,   and  shall  not   affect   the   validity   or
                  enforceability  of such  Article or such part of an Article in
                  any other jurisdiction.  The parties shall replace any Article
                  or  part of an  Article  found  invalid  or  unenforceable  by
                  alternative  provisions  which shall be as similar as possible
                  in their conditions with regard to their spirit and commercial
                  effect.  If this Agreement in any  jurisdiction is found to be
                  invalid or  unenforceable,  the parties shall replace it by an
                  alternative agreement which shall be as similar as possible in
                  its  conditions  with  regard  to its  spirit  and  commercial
                  effect.

         16.3     No actual  waiver of breach or default by either  party hereto
                  of  any  provision  of  this  Agreement  shall  be  deemed  or
                  construed to be a waiver of any  succeeding  breach or default
                  of the same or any other provision of this Agreement.

         16.4     This Agreement shall not constitute  either party as the joint
                  venturer, legal representative or agent of the other party for
                  any purpose, whatsoever. Neither party shall have any right or
                  authority to assume or create any obligation or responsibility
                  for, or on behalf of, the other party,  or to  otherwise  bind
                  the other party.





         16.5     The parties recognize that this is a master agreement covering
                  a number of countries. If, for any country in the Territory it
                  becomes necessary to execute a separate instrument in order to
                  satisfy local requirements,  the parties agree to execute such
                  further  instrument,  which shall, to the extent  permitted by
                  the laws of the particular  country,  conform to the terms and
                  conditions of this Agreement.

         16.6     This Agreement has been  originally  written and signed in the
                  English  language.  If any translation into any other language
                  is required for purposes of governmental  filings, the parties
                  shall  arrange  for such  translation,  and the costs  thereof
                  shall be borne by the  party  legally  required  to make  such
                  filing.  In the event of any  question  or  dispute  as to the
                  meaning or interpretation of any term,  condition or provision
                  of this Agreement,  the English  language version shall in all
                  events govern for all purposes, whatsoever.

         16.7     Termination of this Agreement for any reason, or expiration of
                  this  Agreement,  will not affect  obligations,  including the
                  payment of any  Scheduled  Payments  or  royalties  which have
                  accrued  as of the  date of  termination  or  expiration,  and
                  rights  and  obligations   which,   are  intended  to  survive
                  termination or expiration of this Agreement.

         16.8     This  Agreement is executed  simultaneously  in  counterparts,
                  each of which  shall be deemed an  original,  but all of which
                  shall constitute but one and the same instrument.

         16.9     Neither party shall issue any press release or other publicity
                  materials, or make any oral or written presentation concerning
                  the  Compound  or  Licensed  Product  without the 15 day prior
                  consent of the other  party,  which  will not be  unreasonably
                  withheld.  This  restriction  shall not  apply to  disclosures
                  required by law or  regulation  within any country  within the
                  Territory.  However,  the parties shall  coordinate,  to every
                  extent possible, as to the wording of any such disclosure.


                                   ARTICLE 17
                                     Notices

All notices  pursuant to this Agreement will be in writing and sent by telecopy,
facsimile or other electronic means or sent by pre-paid  regular,  registered or
certified  mail. All such notices will be delivered  personally to, or addressed
as follows:






                  TO:      Neurocrine

                           Neurocrine Biosciences, Inc.
                           3050-Science Park Road, Suite 405
                           San Diego, California  92121
                           Attn: Gary Lyons

                  TO:      DOV

                           DOV Pharmaceutical, Incorporated
                           1-Parker Plaza, Suite 1500
                           Fort Lee, New Jersey  07024
                           Attn:  Dr. Arnold Lippa

         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed by their authorized representatives.

                                 DOV Pharmaceutical, Inc.

                                 By:      /s/Arnold Lippa
                                          Chief Executive Officer


                                 Neurocrine Biosciences, Inc.

                                 By:   /s/Gary Lyons
                                       President and
                                       Chief Executive Officer





                                    EXHIBIT 1
                          CHEMICAL COMPOUND DESCRIPTION




                                    EXHIBIT 2
                                LICENSE AGREEMENT



                                    EXHIBIT 3
                                      [***]



                                    EXHIBIT 4
                          FORM OF CONSULTING AGREEMENT



                                    EXHBIT 5
                                WARRANT AGREEMENT