EXHIBIT 10.1

Dated March 23, 2005






                          FERRING PHARMACEUTICALS INC.

                                       and

                          SAVIENT PHARMACEUTICALS, INC.









                              COPROMOTION AGREEMENT




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                                      INDEX



1. DEFINITIONS

2. LIAISON TEAM

3. SAVIENT SALES FORCE

4. SAVIENT'S FINANCIAL COMMITMENT

5. AUDITS AND INSPECTIONS

6. FERRING'S OBLIGATION

7. PHARMACOVIGILANCE AND REGULATORY AFFAIRS

8. CONFIDENTIALITY

9. REVENUE SHARE

10. PAYMENT TERMS

11. JOINT INVENTIONS AND DISCOVERIES; COPYRIGHT MATERIAL

12. INTELLECTUAL PROPERTY AND INFRINGEMENT

13. TRADEMARKS

14. TERM AND TERMINATION

15. INDEMNIFICATIONS

16. ASSIGNMENT

17. INDEPENDENT CONTRACTOR

18. NOTICES

19. ENTIRE AGREEMENT

20. SEVERABILITY

21. REGISTRATIONS

22. GOVERNING LAW AND DISPUTE RESOLUTION

23. EXECUTION IN COUNTERPARTS



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This agreement (hereinafter "Agreement") is made as of the 23rd day of March,
2005

BETWEEN

(1)      Ferring Pharmaceuticals Inc., having its registered office at 400 Rella
         Boulevard, Suite 300, Suffern, NY 10901 USA (hereinafter "Ferring")

AND

(2)      Savient Pharmaceuticals, Inc., a company duly organised under the laws
         of Delaware and having its registered office at One Tower Center, 14th
         floor, East Brunswick, NJ 08816, USA (hereinafter "Savient")

WITNESSES THAT

WHEREAS:

(A)      Ferring has acquired the rights to market and sell the Product in the
         Territory

(B)      Savient is prepared, at its own expense, to undertake certain
         co-promotional activities with a view to a future share in the
         commercial returns of the said Product.

NOW THEREFORE, in consideration of the covenants and obligations expressed below
and intending to be legally bound.

THE PARTIES HEREBY AGREE AS FOLLOWS:

1.       DEFINITIONS

1.01     ADVERSE EVENT

         Any untoward medical occurrence in a patient or clinical investigation
         subject administered a pharmaceutical product and which does not
         necessarily have to have a causal relationship with this treatment.

1.02     AFFILIATE

         Any corporation, firm or other entity whether de jure or de facto which
         directly or indirectly owns, is owned by or is under common control
         with a party to this Agreement to the extent of at least 50% of the
         equity (or such less a percentage which is the maximum allowed to be
         owned by a foreign corporation in a particular jurisdiction) having the
         right to vote on or direct the affairs of the entity.

1.03     CONFIDENTIAL INFORMATION

         Any and all information regarding a party's technology, products,
         business information or objectives disclosed to the other party in
         connection with the performance of this Agreement. Notwithstanding the
         foregoing, Confidential Information shall not include information that:


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         (a)      was known or used by the receiving party or its Affiliates
                  prior to its date of disclosure to the receiving party as
                  demonstrated by contemporaneous written records (not including
                  information relating to the Product or the business sold by
                  Savient to Ferring and/or its Affiliates that was known or
                  used by Savient at the time of such sale);

         (b)      either before or after the date of the disclosure to the
                  receiving party is lawfully disclosed to the receiving party
                  or its Affiliates by sources other than the disclosing party
                  rightfully in possession of such information and not bound by
                  confidentiality obligations to the disclosing party, provided
                  that, with respect to such information disclosed to Savient,
                  such disclosure occurs after the sale to Ferring and/or its
                  Affiliates of the Product or business sold by Savient to
                  Ferring and/or its Affiliates;

         (c)      is independently developed by or for the receiving party or
                  its Affiliates without reference to or reliance upon the
                  Confidential Information of the disclosing party as
                  demonstrated by contemporaneous written records (not including
                  information relating to the Product or the business sold by
                  Savient to Ferring and/or its Affiliates that was known or
                  used by Savient at the time of such sale); or

         (d)      either before or after the date of the disclosure to the
                  receiving party or its Affiliates is or becomes published or
                  otherwise is or becomes part of the public domain without any
                  breach of this Agreement on the part of the receiving party or
                  its Affiliates.

1.04     EFFECTIVE DATE

         The Closing Date, as defined in the Share Purchase Agreement of even
         date herewith, between Savient and Ferring B.V., a Dutch corporation.

1.05     LAUNCH DATE

         With respect to any Product and to any country the date on which such
         Product was made available to the medical community other than by way
         of participation in a clinical trial.

1.06     LIAISON TEAM

         Savient and Ferring marketing and sales staff and other appropriate
         personnel assembled in accordance with Clause 2.01.

1.07     LICENSE INCOME


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         All amounts received by Ferring and/or its Affiliates from third
         parties in connection with or related to the licensing to such third
         parties of marketing or sales rights to the Product, including without
         limitation (a) all fees, milestone payments and royalties, (b) transfer
         pricing amounts paid in respect of Products supplied to such third
         parties, (c) investments in securities and (d) research and development
         funding, but (notwithstanding the foregoing) excluding:

         (i)      transfer pricing amounts equal to Ferring's and/or its
                  Affiliates' actual costs in respect of Products supplied to
                  such third parties,

         (ii)     amounts received by Ferring and/or its Affiliates from such
                  third parties as the purchase price for Ferring's and/or its
                  Affiliates' debt or equity securities at prices not in excess
                  of the then-current market price of such securities or, if
                  such securities are not publicly traded, the then-current fair
                  market value of such securities, and

         (iii)    amounts received by Ferring and/or its Affiliates for future
                  research and development activities undertaken for, or in
                  collaboration with, such third parties at rates not to exceed
                  the fair market value of such services.

         If non-monetary consideration is received from third parties by Ferring
         and/or its Affiliates, then a commercially reasonable monetary value
         will be assigned for purposes of calculating License Income.

1.08     NET SALES

         (a)      The worldwide gross invoiced sales of the Product by Ferring,
                  its Affiliates and its licensees to unrelated third party
                  customers, to any national or local governments, hospitals,
                  drug wholesalers, pharmacies, and other third party customers
                  (such as distributors, agents or surgicenters and other
                  institutions, the primary business of which is providing
                  medical care), less the following deductions ("Deductions"):
                  (i) direct or indirect credits and allowances or adjustments
                  (consistent with United States generally accepted accounting
                  principles, to the extent applicable) granted to such
                  customers on account of price adjustments, government or other
                  rebates (e.g. Medicare or Medicaid rebates), rejections,
                  recalls or returns in respect of the Product previously sold;
                  (ii) any trade and cash discounts (including any discounts for
                  prompt payment), rebates, and charge-backs granted to
                  customers in the case of sales by drug wholesalers where there
                  are no direct shipments by Ferring, and its Affiliates, to
                  such customers, and administrative fees paid during the
                  relevant time period to group purchasing organisations or to
                  third parties such as pharmaceutical benefit management
                  companies who are not customers but who are involved in the
                  acquisition dispensing, utulization or management of
                  prescriptions, in each case pursuant to this clause (ii) to
                  the extent and only to the extent such amounts relate to, and
                  only to, specific sales of the Product; (iii) bad debt amounts
                  included in Net Sales in prior periods that have remained
                  uncollected for more than one hundred eighty (180) days
                  (provided that if such bad debt amounts are subsequently
                  collected, such amounts will be included in Net Sales in the
                  period in which they are collected) and (iv) any sales or
                  other like taxes imposed upon the sale of the Product to the
                  extent included in the gross sales price (e.g. Value Added
                  Tax), but excluding any taxes on Ferring's or its Affiliates'
                  or licensees' income. In the event that Ferring or its
                  Affiliates obtain marketing authorisation for any Product
                  other than the Product authorised for sale in the USA under
                  the tradename NUFLEXXA as of the Effective Date, the parties
                  shall in good faith negotiate an adjustment to the calculation
                  of Net Sales for such new Product that excludes any
                  incremental portion of the sales price of the new Product
                  fairly attributable to value-adding component(s) or additional
                  cost of goods such as in relation to a premium delivery
                  device.


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1.09     PRODUCT

         The injectable product containing 1% sodium hyaluronate authorised for
         sale in the USA under the tradename NUFLEXXA and as may be approved for
         sale in any other country of the world under that or any other
         tradename, on application by Ferring, an Affiliate of Ferring or a
         third party so authorised to make such application by Ferring or an
         Affiliate of Ferring, as well as any new formulations, dosage
         strengths, combination products based on such product, and products
         sold in combination with premium delivery devices.

1.10     REASONABLE COMMERCIAL EFFORTS

         Such commercial efforts as are consistent with the commercial efforts
         generally applied to products of similar potential at similar stages in
         their life cycles by pharmaceutical companies of a similar size to the
         Ferring affiliate having management responsibility for the particular
         country under consideration.

1.11     SERIOUS ADVERSE EVENT

         A Serious Adverse Event is an Adverse Event that fulfils one or more of
         the following criteria: o fatal o immediately life threatening o
         results in persistent or significant disability/incapacity o results in
         in-patient hospitalisation or prolongs an existing hospitalisation o
         congenital abnormality/birth defect o cancer o manifested signs and
         symptoms caused by overdose

1.12     TERRITORY

         United States of America, its territories and dependents.


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1.13     THRESHOLD


         The worldwide Net Sales in United States Dollars which must be exceeded
         in any particular year for any revenue share to be due to Savient,
         being in 2006 USD 20 million, in 2007 USD 30 million and in 2008 USD 40
         million.

2.       LIAISON TEAM

2.01     The parties will each promptly after the date hereof appoint three
         members of staff to a Liaison Team. The Liaison Team shall meet as
         required at the reasonable request of either party until termination of
         this Agreement but in any case at least twice per year. It is the
         intention of the parties that the Liaison Team establish the mode,
         method and frequency of communications between the parties with respect
         to the activities under this Agreement. The parties will endeavour to
         maintain continuity in the staffing of the Liaison Team; however, the
         choice of members shall be a matter for the sole discretion of the
         appointing party. The Liaison Team will be chaired by a member of
         Ferring's staff, who shall have a casting vote in the event of any tied
         vote. In the event of a decision being made by a casting vote, any
         member of the Liaison Team may request that the decision be reviewed by
         the senior management of both parties before such decision is given
         effect. This Agreement may only be modified in accordance with Clause
         19.01 and not by the decision of the Liaison Team or the exercise of a
         casting vote.

2.02     The Liaison Team will manage and allocate resources for the creation
         and implementation of all promotional and educational programmes for
         the Product in the Territory including all aspects of design and
         implementation of such programmes and including spending for
         advertising, promotion, medical education, sales forces, Product
         samples and related matters. Such promotional and educational
         programmes shall be updated annually and provided to the senior
         management of each party for review. In managing and allocating
         resources for such programmes, the Liaison Team shall be guided by the
         principle that Reasonable Commercial Efforts are to be made to maximize
         the sales of the Product in the Territory.

3        SAVIENT SALES FORCE

3.01     Subject to the terms and conditions of this Agreement, Ferring hereby
         grants Savient the right to promote the Product in the Territory.

         Savient will establish a dedicated rheumatology sales force, which
         shall include a sufficient number of sales representatives to perform
         the call plan for such sales force established in accordance with
         Clause 2.02; provided that such obligations shall in no event require
         Savient to expend more financial resources in any given year than its
         financial commitment for such year pursuant to Clause 4. This sales
         force will promote the Product primarily to rheumatologist physicians
         treating osteoarthritis of the knee in the Territory. Savient shall be
         permitted to utilise the sales force to promote other products;
         provided that the Product shall in such cases be promoted in the
         primary promotion position and the Product must continue to be detailed
         with the agreed upon call reach and frequency as directed by the
         Liaison Team. Savient shall ensure that no products manufactured by any
         other person, firm or company which compete directly with the Product
         are included in any detail in which the Product is included.


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3.02     The sale representatives utilised by Savient will in each case be
         employees or agents of Savient and Savient shall manage all obligations
         in respect of their employment, including without prejudice to the
         foregoing generality, their salary, bonuses and other benefits, social
         security obligations, accommodation and subsistance. Notwithstanding
         the foregoing, any bonus plan shall be reasonably designed, consistent
         with industry norms, to incentivize Savient's sales representatives to
         promote the Product. Savient shall ensure that its staff engaged in
         carrying out any activities hereunder work at all times in full
         compliance with all applicable laws, regulations and codes of ethical
         conduct including the Prescription Drug Marketing Act of 1987. Savient
         shall be responsible for all disciplinary matters relating to its sales
         representatives; however, Savient shall give reasonable consideration
         to any request by Ferring that Savient replace any sales represenative
         whom Ferring believes is underperforming or who fails to promote the
         Product in a professional and competent manner.

3.03     Savient shall ensure that its staff has an adequate level of training
         and knowledge of the Product, and company strategy to carry out its
         obligations hereunder and shall provide such specific training for the
         disease area and Product as the Liaison Team shall direct.

3.04     Savient will cooperate with respect to any training meetings, fairs and
         exhibitions approved by the Liaison Team and shall ensure that its
         sales force use only marketing material developed and expressly
         approved by Ferring and shall make no claims for the Product beyond
         those contained in the marketing authorisation and expressly approved
         by Ferring. During the term of this Agreement Savient shall furnish
         Ferring with those periodic forecasts reports and work plans as may be
         agreed by the Liaison Team from time to time.

3.05     During the term of this Agreement and for a period of one (1) year
         thereafter, neither party shall solicit sales representatives employed
         or otherwise engaged by the other party for activities under this
         Agreement to seek employment or other engagement with such first party;
         however, neither party shall be prohibited from engaging any sales
         representatives of the other party who independently seek employment
         with such first party or who respond to a public advertisement placed
         by such first party.

3.06     Savient shall be responsible for sample accountability for its sales
         representatives, who shall provide samples to physicians as directed by
         the annual marketing plan agreed by the Liaison Team.

3.07     All documents, data and other records obtained by Savient from Ferring
         as a result of the Agreement, including any promotional or training
         materials, will be and remain the property of Ferring. Such documents,
         data and other records shall be kept safely and securely and, with the
         exception of those distributed or otherwise used up in the course of
         Savient's performance hereunder, shall be promptly returned to Ferring
         together with all remaining samples upon expiry or termination of the
         Agreement.


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4        SAVIENT'S FINANCIAL COMMITMENT

         Savient hereby commits to an expenditure of USD 20 million during the
         period between the Effective Date and December 31, 2006 (which
         expenditures during such period shall be allocated by the Liaison Team
         with the intent of applying such expenditures to the effective
         promotion of the Product) and USD 10 million per year during the
         remainder of the term of this Agreement. This shall include the cost of
         creating and maintaining the sales force detailed above in Section 3
         and Savient's reasonable and documented internal costs reasonably
         allocated to Savient's performance of obligations hereunder, with any
         sales force costs pro rated for any additional products the Savient
         sales force may promote. To the extent that Savient spends less than
         its expenditure commitment (as described above in this Clause 4) in any
         period, Savient shall contribute the balance of such expenditure
         commitment towards the advertising, promotion and medical education
         spend for the Product in the Territory as directed by the Liaison Team.
         In exceptional circumstances the Liaison Team may agree that a spending
         commitment for one period may be carried forward into the following
         period. Notwithstanding the foregoing, if the Effective Date of this
         Agreement occurs after July 31, 2005, the Liaison Team will discuss and
         agree upon changes, if any, to the timing (but not the amounts) of
         Savient's financial commitments under this Section 4 required based on
         any resulting delay in the commencement of activities under this
         Agreement.

5.       AUDITS AND INSPECTIONS:

         Ferring or its agents shall be entitled during the term of this
         Agreement and for six months thereafter in its absolute discretion to
         audit or inspect, not more than once per calendar year, the conduct by
         Savient of any work undertaken hereunder and Savient's associated
         expenditure. Such audits and inspections shall take such form as
         Ferring may reasonably think fit and shall include without prejudice to
         the foregoing generality the right to inspect any facility being used
         by Savient or any subcontractor in relation to such work and to examine
         and make copies of any procedures and records both commercial and
         financial, relating to the work, always provided that such audits and
         inspections are not incompatible with local laws, that such audits and
         inspections do not cause unreasonable disruption to the operations of
         Savient and that such audits and inspections are undertaken during
         normal working hours. Ferring shall give not less than 5 days prior
         notice to Savient of its intention to audit or inspect as aforesaid. No
         such auditing or inspecting by Ferring shall relieve Savient of any of
         its obligations hereunder.


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         With respect to audits or inspections required by third parties, such
         as regulatory or governmental authorities, the parties agree to give
         each other such notice as is reasonably practicable of any such audit
         or inspection of which they become aware and shall grant the other such
         access to data, personnel or facilities as may be reasonably necessary
         to comply with such audit or inspection. Savient will advise Ferring
         promptly of any adverse action by regulatory authorities in relation to
         its sales and marketing activities, whether or not the relevant action
         is in relation to the work hereunder. The rights of access and
         information granted under this Clause 5 shall be without prejudice to
         the obligations of confidentiality and rights of ownership contained
         elsewhere in the Agreement.

         In addition, Ferring shall have the right to monitor the performance
         and activities of the Savient sales force in accordance with a plan
         approved by the Liaison Team.


6.       FERRING'S OBLIGATIONS

6.01     Ferring will commit to a spending level during the term of the
         Agreement sufficient to support the sales and marketing effort
         necessary to ensure that Reasonable Commercial Efforts are utilised to
         maximise sales of the Product in the Territory taking into account the
         efforts of Savient's sale force under Clause 3 above and Savient's
         financial commitment under Clause 4 above. Outside the Territory
         Ferring will ensure that its Affiliates are offered the Product for
         each of the countries in which they are active and will launch the
         Product themselves or license the rights to third party to launch the
         Product if it is commercially reasonable to do so however the decision
         as to whether or not a such launch or outlicensing is commercially
         reasonable shall be in the sole discretion of the Affiliate concerned
         as shall any decisions relating to any subsequent marketing or
         promotion of the Product in any such countries outside the Territory.

6.02     Within the Territory Ferring will primarily promote the Product to
         orthopaedic surgeons and high prescribing physicians treating
         osteoarthritis of the knee.

7.       PHARMACOVIGILANCE AND REGULATORY AFFAIRS

7.01     During the term of this Agreement, Ferring shall be responsible for
         reporting Adverse Events with respect to the Product to the appropriate
         regulatory authorities in accordance with the laws and regulations of
         the relevant countries and authorities; however, in the event that
         Savient becomes aware of an Adverse Event or Serious Adverse Event it
         shall report such information to Ferring's Director of Regulatory
         Affairs as follows:

         1.       Fatal unexpected Adverse Events by telephone or facsimile
                  within one (1) working day of receipt.

         2.       All other Serious Adverse Events in writing within five (5)
                  working days of receipt.


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         3        A summary of all Adverse Events, including Serious Adverse
                  Events in writing on a monthly basis and giving as far as
                  reasonably possible a considered interpretation of all such
                  events, and indicating those cases which have previously been
                  reported to Ferring. Further information received on any
                  Serious Adverse Event (or any information which changes an
                  Adverse Event from an Adverse Event to a Serious Adverse
                  Event) will also be reported to Ferring within one (1) or five
                  (5) working days of receipt, according to the above criteria.

         Savient's sales representatives shall provide to the physicians they
         call upon the telephone number to Ferring's Adverse Event reporting
         line (such telephone number to be provided to Savient by Ferring) to
         which all Adverse Event reports are to be made. Ferring shall provide
         to Savient a bi-monthly summary of Adverse Events reported to Ferring
         as well as a copy of each annual safety report that Ferring submits to
         the FDA.

7.02     Ferring shall have sole responsibility for contacts with the FDA and
         all other regulatory authorities and, except as otherwise required by
         applicable law or regulation, Savient shall refer all FDA enquiries
         regarding the Product to Ferring. Similarly Savient shall, except as
         otherwise required by applicable law or regulation, refer all medical
         enquiries regarding the Product to Ferring.

8.       CONFIDENTIALITY

8.01     Neither party will disclose or use, at any time during or subsequent
         to the term of this Agreement, any Confidential Information of the
         other party, its Affiliates or its commercial partners obtained by
         such first party in the course of performing its obligations
         hereunder, except as required in connection with such first party's
         performance of obligations pursuant to this Agreement or with the
         other party's prior written approval.

         Each party shall only disclose Confidential Information of the other
         party to its employees or agents as reasonably required for the
         purposes contemplated under this Agreement. Each party shall be
         responsible for the acts and omissions of its employees and agents
         who have received Confidential Information of the other party, as if
         such were such first party's own acts or omissions.

         Neither party's obligation of confidence and limitation on use
         hereunder shall apply to information that is required by law to be
         disclosed; provided that, in the event of any such legal requirement,
         the party subject to such requirement shall give prompt notice of the
         requirement to the other party so that it may seek appropriate relief
         to prevent or limit such disclosure; provided further that any such
         legally required disclosure shall be only to the extent so required.

         Each party agrees, in addition, not to make any statement on the
         other party's behalf or concerning the other party to the press,
         media, investors, brokers, banks, financial analysts and/or any other
         third party without the prior approval of the other party. Neither
         party will use the name of the other party or that of the other
         party's staff for advertising or publicity purposes without their
         respective consents, except that each may include in its promotional
         material or otherwise, references to and quotations from
         publications. Notwithstanding anything to the contrary in this Clause
         8, either party shall have the right to disclose such information
         about the subject matter of this Agreement as such party reasonably
         determines is necessary to comply with applicable securities laws or
         regulations or the rules of any stock exchange or NASDAQ. This Clause
         8 will survive any expiry or termination of this Agreement.


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9.       REVENUE SHARE

9.01     Ferring shall book all the worldwide sales of the Product. Commencing
         with the 2006 calendar year, Savient shall be entitled to receive 50%
         of the worldwide Net Sales of the Product for all indications exceeding
         the applicable annual Threshold.

9.02     In the event that, subject to Clause 6.01, Ferring or an Affiliate of
         Ferring licenses the marketing and sales rights to the Product to a
         third party outside the Territory, all License Income received by
         Ferring or its Affiliate with respect to such licence (and not the
         licensee's Net Sales) shall be deemed to constitute Net Sales for the
         purpose of determining the parties' sharing of Net Sales pursuant to
         Clause 9.01. For the avoidance of doubt, Ferring shall not license the
         marketing or sales rights to the Product in the Territory, or in any
         other way sell or dispose of the marketing or sales rights to the
         Product in the Territory, during the term of this Agreement.

9.03     All payments made to Savient pursuant to this Clause 9 are in
         consideration for Savient's performance of promotional obligations in
         the Territory. Therefore, the parties acknowledge that no foreign
         withholding tax or similar tax based on foreign source economic
         activity shall be withheld from any amount payable to Savient pursuant
         to this Clause 9.

10.      PAYMENT TERMS

10.01    Commencing with the 2006 calendar year, beginning in the calendar
         quarter in which the relevant Threshold has been reached for any
         calendar year during the term of this Agreement, payments due under
         Clause 9 above shall be calculated quarterly on a calendar basis and
         shall be payable within thirty (30) days after the end of the relevant
         quarter. Each remittance shall be accompanied by a true accounting of
         all Net Sales, sales by licensees or co-promoters and License Income
         received by Ferring and its Affiliates and any other relevant
         information. In addition, during the term of this Agreement, Ferring
         shall report all Net Sales, sales by licensees or co-promoters and
         License Income received by Ferring and its Affiliates on a monthly
         basis to Savient within ten (10) days after the end of each calendar
         month.


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10.02    Savient with respect to any payment due hereunder shall have the right
         at its own expense (save as provided below) for an independent
         certified public accountant or like person reasonably acceptable to
         Ferring to examine all records, including those held by licensees and
         co-promoters, relating to Net Sales, sales by licensee and co-promoters
         and License Income received by Ferring and its Affiliates and any other
         relevant information during regular business hours during the life of
         this Agreement and for one (1) year after its termination, provided
         however that such examination shall not take place more than once a
         year and shall not cover such records for more than the preceding two
         (2) years and, provided further that such accountant shall report to
         Savient only as to the accuracy of the payments made to it by Ferring
         under this Agreement. In the event that such inspection reveals a
         discrepancy in payments made in excess of 5% for any calendar quarter,
         Ferring shall pay Savient's reasonable costs incurred in connection
         with the inspection. Any sums found to be owing to either party as a
         result of the inspection shall be paid over promptly with interest as
         set forth in Clause 10.05; provided that Savient shall not be required
         to pay interest on any overpayment by Ferring discovered as a result of
         such inspection.

10.03    All payments due under this Agreement shall be payable in United States
         Dollars.

10.04    Monetary conversion of Net Sales into United States Dollars shall be
         calculated in accordance with the rates and methodology utilised by
         Ferring in preparing its own monthly accounts as verified by Ferring's
         auditors.

10.05    Either party shall, without prejudice to its other rights, be entitled
         to charge the other interest on overdue payments of 2% (two percent)
         per annum above the EURIBOR accruing at a daily rate from the date
         payment becomes due until payment is made.



11.      JOINT INVENTIONS AND DISCOVERIES; COPYRIGHT MATERIAL

         Any invention, discovery or know-how (whether patentable or not) made
         jointly by the parties in the course of activities under this Agreement
         shall be jointly owned by the parties; provided that any such joint
         invention or discovery that is incorporated into or otherwise applied
         to the Product shall not be incorporated into or applied to any product
         that competes with the Product by either party.

         Any copyright material which may be created by Savient or to which
         Savient may contribute under this Agreement will belong absolutely to
         Ferring, provided that such copyright material is created in the course
         of fulfilling Savient's obligations hereunder. Savient will at
         Ferring's request and expense, assign to Ferring its title to any such
         copyright material.

         No royalty or other payment will be due by either party to the other in
         respect of any such joint invention, discovery or know-how, or by
         Ferring to Savient in respect of any such copyright material.


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12.      INTELLECTUAL PROPERTY AND INFRINGEMENT

12.01    Savient shall promptly inform Ferring of any information that comes to
         its attention involving actual or apparent infringements or
         misappropriations of patents, know-how or trademarks by any third party
         or any claims of intellectual infringement made by any third party
         regarding the manufacture, import, offer for sale, sale or use of the
         Product. In the event of such infringement by a third party, it shall
         be a matter for Ferring's sole discretion whether and what action to
         take in response to any such information but in the event that Ferring
         decides to initiate any action or proceeding against an alleged
         infringer Savient will provide all such reasonable support and
         assistance as Ferring may request all at Ferring's expense. In the
         event of any claim of intellectual infringement made by any third party
         regarding the manufacture, import, offer for sale, sale or use of the
         Product, Ferring shall indemnify and hold harmless Savient, its
         officers, directors, shareholders, employees, successors and assigns
         from any loss, damage or liability including reasonable attorneys' fees
         resulting from such claim and any related complaint, suit, proceeding
         or cause of action; provided that Ferring shall not have any obligation
         to indemnify or hold harmless Savient for any matter as to which
         Savient has an obligation to indemnify Ferring or any Affiliate of
         Ferring pursuant to the agreement under which Savient transferred
         ownership rights in the Product to an Affiliate of Ferring.

12.02    Any compensation awarded from third parties as a result of Ferring's
         enforcement of its rights shall, after deduction of Ferring's costs and
         expenses incurred in relation to obtaining such compensation, be
         retained by Ferring, save for any portions of any award that are
         reasonably attributable to lost sales, which portions shall be deemed
         to constitute Net Sales for the purpose of determining the parties'
         sharing of Net Sales pursuant to Clause 9.01.

13.      TRADEMARKS

13.01    In connection with its co-promotion function hereunder Savient shall be
         entitled to use the trademarks of Ferring and/or its Affiliates in the
         form in which they are displayed on the labels, packaging and
         advertising provided or approved by Ferring. Savient shall not acquire
         any property rights whatsoever in Ferring's trademarks nor shall it use
         any other trademark in relation to the use or marketing of the Product.

14.      TERM AND TERMINATION

14.01    Notwithstanding anything to the contrary herein, neither party shall
         have any obligations under this Agreement (other than Sections 2 and 8)
         until the Effective Date. This Agreement shall become effective on the
         Effective Date (except for Sections 2 and 8, which shall become
         effective on the date hereof) and shall, unless earlier terminated,
         remain in effect until 31 December 2008. Savient shall be entitled to
         terminate this Agreement effective as of 31 March 2007 in the event
         that worldwide Net Sales of the Product fail to exceed USD 20 million
         during 2006. For each calendar quarter commencing after 31 December
         2006, Savient may also terminate this Agreement effective as of the
         close of the next ensuing calendar quarter, in the event that worldwide
         Net Sales of the Product during such calendar quarter do not meet or
         exceed the sum of (a) one quarter of the Threshold set for the
         applicable calendar year plus (b) USD 5 million. Savient's notice of
         its intention to terminate must in each case be provided to Ferring no
         less than ten (10) days after Savient's receipt, pursuant to Clause
         10.01, of (i) with respect to 2006, the Net Sales report for the fourth
         quarter of 2006 and (ii) with respect to any subsequent calendar
         quarter, the Net Sales report for such calendar quarter.


                                       14


14.02    If either party fails or neglects to perform material covenants or
         provisions of this Agreement and if such default is not corrected
         within sixty (60) days after (or, in the case of payment defaults, ten
         (10) days after) receiving written notice from the other party with
         respect to such material default, such other party shall have the right
         to terminate this Agreement by giving written notice to the party in
         default, provided the notice of termination is given within six (6)
         months of the default and prior to correction of the default.

14.03    Either party may terminate this Agreement at any time if the other
         party shall file in any Court or agency pursuant to any statute or
         regulation of any state or country a petition in bankruptcy or
         insolvency or for re-organisation (other than for the purposes of
         merger or amalgamation) or for an arrangement with its creditors or for
         the appointment of a receiver or trustee of the party or of all or a
         significant portion of its assets or if that party proposes a written
         agreement of composition or extension of its debts or shall be served
         with an involuntary petition against it filed in any insolvency
         proceeding, and such petition shall not be dismissed within one hundred
         twenty (120) days after the filing thereof or if such party shall
         propose or be a party to any dissolution or liquidation or shall make
         an assignment for the benefit of its creditors.

14.04    Termination of this Agreement shall not affect the rights of either
         party accrued up to the date of termination.

14.05    Notwithstanding termination of this Agreement for whatever reason, the
         terms of Clauses 1, 5, 6, 8, 10.02, 10.05, 11, 12 15, 18, 20, 22 and 23
         shall remain in full force and effect.


                                       15


15.      INDEMNIFICATIONS

15.01    Ferring shall indemnify and hold harmless Savient, its officers,
         directors, shareholders, employees, successors and assigns from any
         loss, damage or liability including reasonable attorneys' fees
         resulting from any claim, complaint, suit, proceeding or cause of
         action against any of them alleging physical or other injury including
         death brought by or on behalf of an injured party, loss of service or
         consortium or a similar such claim, complaint, suit, proceeding or
         cause of action brought by a friend, spouse, relative or companion of
         an injured third party due to such physical injury or death and arising
         out of the administration, utilisation and/or ingestion of Product
         manufactured, sold or otherwise provided to the injured party by
         Ferring (or its Affiliates, co-marketeers, co-promoters, distributors
         or licensees). Savient shall indemnify and hold harmless Ferring, its
         officers, directors, shareholders, employees, successors and assigns
         from any loss, damage or liability including reasonable attorneys' fees
         resulting from any claim, complaint, suit, proceeding or cause of
         action against any of them alleging physical or other injury including
         death brought by or on behalf of an injured third party, loss of
         service or consortium or a similar such claim, complaint, suit,
         proceeding or cause of action brought by a friend, spouse, relative or
         companion of an injured third party due to such physical injury or
         death, and arising out of the administration, utilisation and/or
         ingestion of Product manufactured, sold or otherwise provided to the
         injured third party by Savient or its Affiliates, and arising out of
         the negligence, wilful misconduct or unlawful activity of, or promotion
         of any claim not expressly approved by Ferring by, Savient or any
         member of its staff, its agents or contractors. In either case:

         (a)      the indemnifying party shall not be obligated under this
                  clause if it is shown by evidence acceptable in a court of law
                  having jurisdiction over the subject matter and meeting the
                  appropriate degree of proof for such action that the injury
                  was the result of the negligence or wilful misconduct or
                  unlawful activity of any employee or agent of the other party.

         (b)      the indemnifying party shall have no obligation under this
                  clause to the extent:

                  1.       the party seeking indemnification fails to give the
                           indemnifying party prompt written notice of any claim
                           or lawsuit or other action for which the party
                           seeking indemnification seeks to be indemnified under
                           this Agreement and, as a consequence, the
                           indemnifying party is prejudiced;

                  2.       the indemnifying party acknowledges that it is
                           obligated to indemnify and hold harmless the party
                           seeking indemnification from such lawsuit or other
                           action and the party seeking indemnification refuses
                           to grant the indemnifying party full authority and
                           control over the defence and settlement of such
                           lawsuit or other action; or

                  3.       the party seeking indemnification fails to co-operate
                           as reasonably requested by the indemnifying party and
                           its agents in the defence of the claims or lawsuit or
                           other action.

         (c)      The indemnified party shall have the right to participate in
                  the defence of any such claim, complaint, suit, proceeding or
                  cause of action referred to in this clause utilising legal
                  counsel of its choice providing, however, that the
                  indemnifying party shall have full authority and control to
                  handle any such claim, complaint, suit, proceeding or cause of
                  action including any settlement or other disposition thereof
                  for which indemnification is sought under this clause;
                  provided that the indemnifying party shall not settle any such
                  claim, complaint, suit, proceeding or cause of action unless
                  such settlement includes a full release of all liabilities and
                  obligations of the party seeking indemnification in connection
                  therewith other than financial liabilities against which the
                  indemnifying party will indemnify and hold harmless the party
                  seeking indemnification.


                                       16


15.02    Each party shall defend, indemnify and hold harmless the other and said
         other's officers, directors, shareholders, employees, successors and
         assigns from and against any and all third party damages, claims,
         costs, law suits, liabilities or expenses including reasonable
         professional fees arising out of or resulting from or in connection
         with such party's breach of this Agreement or the negligence or wilful
         misconduct or unlawful activity of any employee or agent of such party,
         provided:

         (a)      the indemnifying party shall not be obligated under this
                  clause if it is shown by evidence acceptable in a court of law
                  having jurisdiction over the subject matter and meeting the
                  appropriate degree of proof for such action that the injury
                  was the result of the negligence or wilful misconduct or
                  unlawful activity of any employee or agent of the other party.

         (b)      the indemnifying party shall have no obligation under this
                  clause to the extent:

                  1.       the party seeking indemnification fails to give the
                           indemnifying party prompt written notice of any claim
                           or lawsuit or other action for which the party
                           seeking indemnification seeks to be indemnified under
                           this Agreement and, as a consequence, the
                           indemnifying party is prejudiced;

                  2.       the indemnifying party acknowledges that it is
                           obligated to indemnify and hold harmless the party
                           seeking indemnification from such lawsuit or other
                           action and the party seeking indemnification refuses
                           to grant the indemnifying party full authority and
                           control over the defence and settlement of such
                           lawsuit or other action; or

                  3.       the party seeking indemnification fails to co-operate
                           as reasonably requested by the indemnifying party and
                           its agents in the defence of the claims or lawsuit or
                           other action.

         (c)      The indemnified party shall have the right to participate in
                  the defence of any such claim, complaint, suit, proceeding or
                  cause of action referred to in this clause utilising legal
                  counsel of its choice providing, however, that the
                  indemnifying party shall have full authority and control to
                  handle any such claim, complaint, suit, proceeding or cause of
                  action including any settlement or other disposition thereof
                  for which indemnification is sought under this clause;
                  provided that the indemnifying party shall not settle any such
                  claim, complaint, suit, proceeding or cause of action unless
                  such settlement includes a full release of all liabilities and
                  obligations of the party seeking indemnification in connection
                  therewith other than financial liabilities against which the
                  indemnifying party will indemnify and hold harmless the party
                  seeking indemnification.


                                       17



16.      ASSIGNMENT

16.01    This Agreement and the licences herein granted shall be binding upon
         and inure to the benefit of the successors in interest of the
         respective parties.

16.02    Neither party shall assign any of its rights or obligations under this
         Agreement without the prior written consent of the other party, save
         that either party may assign its rights and obligations under this
         Agreement to any of its respective Affiliates or to any company with
         which it may merge or consolidate or to any company to whom it may
         transfer all or substantially all of its assets or to any company by
         which it may be acquired (including in each case any company created as
         a new vehicle upon any such merger, transfer or acquisition), provided
         that such company undertakes directly to the other original party under
         this Agreement to be bound by the terms of this Agreement.

17.      INDEPENDENT CONTRACTORS

17.01    The parties are independent contractors under this Agreement and no
         other relationship is intended, including without limitation any
         partnership, joint venture or agency relationship. Neither party shall
         act in a manner that expresses or implies a relationship other than of
         independent contractor nor bind the other party except as otherwise
         expressly provided in this Agreement. Nothing in this Agreement shall
         be deemed to infer any direct relationship between Savient and any
         Affiliate of Ferring.

18.      NOTICES

18.01    Any notice required or permitted under this Agreement shall be sent by
         air mail, postage pre-paid to the following addresses of the parties
         (except as otherwise provided by Clause 7.01).

         Ferring Pharmaceuticals Inc.         400 Rella Boulevard, Suite 300
                                              Suffern, New York 10901 USA

                                              (Attention President)
         with a copy to

         Ferring International Center SA      Avenue de Rhodanie 60
                                              1007 Lausanne
                                              Switzerland
                                              (Attention: General Counsel)

         Savient Pharmaceuticals, Inc.        One Tower Center, 14th floor
                                              East Brunswick, NJ 08816 USA
                                              (Attention: General Counsel)


                                       18


         with a copy to

         Wilmer Cutler Pickering
           Hale and Dorr LLP                  399 Park Avenue
                                              New York, New York 10022 USA
                                              Attention:  David E. Redlick, Esq.

18.02    Any notice required or permitted to be given concerning this Agreement
         shall be effective upon receipt by the party to whom it is addressed.

19.      ENTIRE AGREEMENT

19.01    This Agreement constitutes the entire Agreement between the parties
         relating to the subject matter hereof and supersedes all previous
         writings and understandings. No terms or provisions of this Agreement
         shall be varied or modified in any prior or subsequent statement,
         conduct or act of either of the parties, except that the parties may
         amend this Agreement by written instruments executed on behalf of both
         parties and making express reference to this Agreement.

20.      SEVERABILITY

20.01    In the event any portion of this Agreement shall be held illegal, void
         or ineffective, the remaining portions hereof shall remain in full
         force and effect.

20.02    If any of the terms or provisions of this Agreement are in conflict
         with any applicable statute or rule of law, then such terms or
         provisions shall be deemed inoperative to the extent that they may
         conflict therewith and shall be deemed to be modified to conform with
         such statute or rule of law.

20.03    In the event that the terms and conditions of this Agreement are
         materially altered as a result of Clause 20.01 or 20.02 above, the
         parties will renegotiate the terms and conditions of this Agreement to
         resolve any inequities.

21.      REGISTRATION

21.01    Either party shall have the right at any time to record, register or
         otherwise notify this Agreement to appropriate governmental or
         regulatory offices having first given thirty (30) days' written notice
         to the other party of its intention so to do. The other party shall
         provide reasonable assistance in effecting such recording, registering
         or notifying.


                                       19



22.      GOVERNING LAW AND DISPUTE RESOLUTION

22.01.   This Agreement shall be governed by the laws of State of New York
         (excluding any rules of conflicts of laws that would apply the
         substantive laws of any other jurisdiction). Any disputes arising from
         this Agreement, which can not be resolved through good faith
         discussions, shall be referred to and finally settled by in accordance
         with the procedure set out in Appendix A.

23.      EXECUTION IN COUNTERPARTS

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



IN WITNESS WHEREOF, the parties have caused this Agreement to be executed as of
the date first written above.

                          FERRING PHARMACEUTICALS INC.



                          By: /s/ Wayne C. Anderson
                              -------------------------------------------
                              Name: Wayne C. Anderson
                              Title: President & CEO


                          SAVIENT PHARMACEUTICALS, INC.



                          By: /s/ Philip K. Yachmetz
                              ---------------------------------------------
                              Name: Philip K. Yachmetz
                              Title: Senior Vice President -
                                     Corporate Strategy & General
                                     Counsel




                                       20



                                   APPENDIX A


                          DISPUTE RESOLUTION MECHANISM

The parties recognise that a bona fide dispute as to certain matters may arise
from time to time during the term of this Agreement that relates to either
party's rights and/or obligations. To have such a dispute resolved by this
Alternative Dispute ("ADR") provision, a party first must send written notice of
the dispute to the other party for attempted resolution by good faith
negotiations between the parties. In the event that the parties fail to reach a
negotiated resolution within fourteen (14) days after written notice of the
dispute, the matter shall be referred to their respective Chief Executive
Officers.

If the matter has not been resolved by the parties' respective Chief Executive
Officers within fourteen (14) days after referral to such Chief Executive
Officers, either party may initiate an ADR proceeding as provided herein. The
parties shall have the right to be represented by counsel in such a proceeding.

1.   To begin an ADR proceeding, a party shall provide written notice to the
     other party of the issues to be resolved by ADR. Within fourteen (14) days
     after its receipt of such notice, the other party may, by written notice to
     the party initiating the ADR, add additional issues to be resolved within
     the same ADR.

2.   Within twenty-one (21) days following receipt of the original ADR notice,
     the parties shall select a mutually acceptable neutral to preside in the
     resolution of any disputes in this ADR proceeding. If the parties are
     unable to agree on a mutually acceptable neutral within such period, either
     party may request the President of the CPR Institute for Dispute Resolution
     ("CPR"), 366 Madison Avenue, 14th Floor, New York, NY 10017, to select a
     neutral pursuant to the following procedures:

     (a)  The CPR shall submit to the parties a list of not less than five (5)
          candidates within fourteen (14) days after receipt of the request,
          along with a Curriculum Vitae for each candidate. No candidate shall
          be an employee, director, or shareholder of either party or any of
          their subsidiaries or Affiliates.

     (b)  Such list shall include a statement of disclosure by each candidate of
          any circumstances likely to affect his or her impartiality.

     (c)  Each party shall number the candidates in order of preference (with
          the number one (1) signifying the greatest preference) and shall
          deliver the list to the CPR within seven (7) days following receipt of
          the list of candidates. If a party believes a conflict of interest
          exists regarding any of the candidates, that party shall provide a
          written explanation of the conflict to the CPR along with its list
          showing its order of preference for the candidates. Any party failing
          to return a list of preferences on time shall be deemed to have no
          order of preference.



                                       21


     (d)  If the parties collectively have identified fewer than three (3)
          candidates deemed to have conflicts, the CPR immediately shall
          designate as the neutral the candidate for whom the parties collective
          have indicated the greatest preference. If a tie should result between
          two (2) candidates, the CPR may designate either candidate. If the
          parties collectively have identified three (3) or more candidates
          deemed to have conflicts, the CPR shall review the explanations
          regarding conflicts and, in its sole discretion, may either (i)
          immediately designate as the neutral the candidate for whom the
          parties collectively have indicated the greatest preference, or (ii)
          issue a new list of not less than five (5) candidates, in which case
          the procedures set forth in subparagraphs 2(a) - 2(d) shall be
          repeated.

3.   No earlier than twenty-eight (28) days or later than fifty-six (56) days
     after selection, the neutral shall hold a hearing to resolve each of the
     issues identified by the parties. The ADR proceeding shall take place at a
     location agreed upon by the parties. If the parties cannot agree, the
     neutral shall designate a location other than the principal place of
     business of either party or any of their subsidiaries or Affiliates.

4.   Each party to the proceeding shall be entitled to make one (1) document
     request to the other party, limited to no more than five (5) specific
     requests, subject to the right of the neutral to rule on any objection to
     such request, which shall not be subject to appeal. Any such document
     request shall be delivered no later than twenty-four (24) days prior to the
     hearing. Documents in response to such requests shall be provided within
     ten (10) days of the request. Each party may also take up to three (3)
     depositions, subject to the right of the neutral to rule on any objection
     to such deposition, which shall not be subject to appeal.

5.   At least seven (7) days prior to the hearing, each party shall submit the
     following to the other party and the neutral:

     (a)  a copy of all exhibits on which such party intends to rely in any oral
          or written presentation to the neutral;

     (b)  a list of any witnesses such party intends to call at the hearing, and
          a short summary of the anticipated testimony of each witness;

     (c)  a pre-hearing brief setting forth the party's factual and legal
          contentions, as well as its contentions on damages claimed. The brief
          shall not exceed twenty (20) pages. This page limitation shall apply
          regardless of the number of issues raised in the ADR proceeding.

6.   The hearing shall be conducted on two (2) consecutive days and shall be
     governed by the following rules:

     (a)  Each party shall be entitled to five (5) hours of hearing time to
          present its case. The neutral shall determine whether each party has
          had the five (5) hours to which it is entitled.


                                       22


     (b)  Each party shall be entitled, but not required, to make an opening
          statement, to present regular and rebuttal testimony, documents or
          other evidence, to cross-examine witnesses, and to make a closing
          argument. Cross-examination of witnesses shall occur immediately after
          their direct testimony, and cross-examination time shall be charged
          against the party conducting the cross-examination.

     (c)  The party initiating the ADR shall begin the hearing and, if it
          chooses to make an opening statement, shall address not only issues it
          raised but also any issues raised by the responding party. The
          responding party, if it chooses to make an opening statement, also
          shall address all issues raised in the ADR. Thereafter, the
          presentation of regular and rebuttal testimony and documents, other
          evidence, and closing arguments shall proceed in the same sequence.

     (d)  Except when testifying, witnesses shall be excluded from the hearing
          until closing arguments.

     (e)  Settlement negotiations, including any statements made therein, shall
          not be admissible under any circumstances. Affidavits prepared for
          purposes of the ADR hearing also shall not be admissible. As to all
          other matters, the neutral shall have sole discretion regarding the
          admissibility of any evidence.

7.   Within seven (7) days following completion of the hearing, each party may
     submit to the other party and the neutral a post-hearing brief in support
     of its contentions, provided that such brief shall not contain or discuss
     any new evidence and shall not exceed ten (10) pages. This page limitation
     shall apply regardless of the number of issues raised in the ADR
     proceeding.

8.   The neutral shall rule on each disputed issue within fourteen (14) days
     following completion of the hearing. Such ruling shall adopt in its
     entirety the proposed ruling and remedy of one of the parties on each
     disputed issue but may adopt one party's proposed rulings and remedies on
     some issues and the other party's proposed rulings and remedies on the
     other issues. The neutral shall not issue any written opinion or otherwise
     explain the basis of the ruling.

9.   The neutral shall be paid a reasonable fee plus expenses. These fees and
     expenses, along with the reasonable legal fees and expenses of the
     prevailing party (including all expert witness fees and expenses), the fees
     and expenses of a court reporter, and any expenses for a hearing room,
     shall be paid as follows:

     (a)  If the neutral rules in favour of the one party on all disputed issues
          in the ADR, the losing party shall pay one hundred percent (100%) of
          such fees and expenses.

     (b)  If the neutral rules in favour of one party on some issues and the
          other party on other issues, the neutral shall issue with the rulings
          a written determination as to how such fees and expenses shall be
          allocated between the parties. The neutral shall allocate fees and
          expenses in a way that bears a reasonable relationship to the outcome
          of the ADR, with the party prevailing on more issues, or on issues of
          greater value or gravity, recovering a relatively larger share of its
          legal fees and expenses.


                                       23


10.  The rulings of the neutral, including rulings on the allocation of fees and
     expenses, shall be binding, non-reviewable, and non-appealable, and may be
     entered as a final judgement in any court having jurisdiction.

11.  Except as provided in paragraph 10 or as required by law, the existence of
     the dispute, any settlement negotiations, the ADR hearing, any submissions
     (including exhibits, testimony, proposed rulings and briefs), and the
     rulings shall be deemed Confidential Information. The neutral shall have
     the authority to impose sanctions for unauthorised disclosures of
     Confidential Information.





                                       25