<PAGE>

                                                                   EXHIBIT 10.26

                                   [*] REDACTED CONFIDENTIAL TREATMENT REQUESTED


                            NON-EXCLUSIVE SUPPLY AGREEMENT

THIS AGREEMENT ENTERED INTO by and between [*] (hereinafter "[*]") with its
principal offices located at [*] and SuperGen, Inc.
(hereinafter "SuperGen") with its principal offices located at 2 Annabel Lane,
Suite 220, San Ramon, CA 94583, USA.

Whereas [*] has developed a process for the production of Paclitaxel [*] and 
has sought to implement a process which meets Good Manufacturing Practices 
(hereinafter "GMP") of the United States Food and Drug Administration;

Whereas SuperGen has consulted with [*] concerning the development plans for
production of Paclitaxel and other products, and has sought to assist [*] with
certain technical assistance relating to assays and stability testing resources
for this project;

Whereas SuperGen has a number of new products in Clinical trials and in other
stages of development [*];

Whereas [*] and SuperGen, both are interested in furthering a mutually
beneficial relationship particularly in relation to new products of potential
interest to both parties for development and marketing [*];

Whereas [*] and SuperGen have made disclosures to one another concerning the
future development plans for Paclitaxel and other products under development by
SuperGen and both parties favour pursuing discussions in connection with forming
particular joint projects [*] for the development and marketing of these
products [*];

Whereas [*] wishes to obtain certain advance consideration and guarantees for
the future purchase of Paclitaxel; and

Whereas SuperGen desires to secure assured supplies of Paclitaxel from a
qualified vendor on a non exclusive basis.

Now Therefore [*] and SuperGen agree as follows:

1.  Definitions

    A.   "ANDA" shall mean Abbreviated New Drug Application.

    B.   "DMF" shall mean a drug master file, or its equivalent for the Product
filed with a regulatory agency by or on behalf of [*] which is adequate to
comply with the applicable requirements and standards of such regulatory agency
with respect to the Product.


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                                   [*] REDACTED CONFIDENTIAL TREATMENT REQUESTED


    C.   "FDA" shall mean the United States Food and Drug Administration.

    D.   "GMP" shall mean good manufacturing practices as defined by the FDA in
    21 Code of Federal Regulations part 211.

    E.   [*]

    F.   "Specifications" shall mean the particulars pertaining to composition,
         -------------- quality and other characteristics for the Product as set
    forth in Exhibit A hereto as may be amended from time to time by mutual
    agreement of the parties.

    G.   "USP" shall mean United States Pharmacopoeia.

    H.   "Product" shall mean bulk Paclitaxel.
          -------

    I.   "Dollars" shall mean United States Dollars.
          -------

2.  SuperGen shall pay [*] during the GMP development process and FDA
    inspection period, the sum of $1,000,000 (one million dollars) to 
    be applied as follows:

    A.   A payment of Four Hundred Thousand Dollars ($400,000) to be paid 
    within 30 days of the acceptance by both parties of this Agreement.

    B.   A payment of Three Hundred Thousand Dollars ($300,000) to be paid 
    within 10 days after the conclusion of accelerated stability studies at 
    a testing facility to be agreed upon by the parties, showing that the 
    Product, produced according to GMP, is stable for the period of time 
    recommended [*] for accelerated stability protocols. In addition 
    SuperGen agrees to pay for costs of stability studies on certification 
    batches of Paclitaxel to be performed at a laboratory mutually agreed 
    upon by [*] and SuperGen for such stability studies, and the cost of a 
    method transfer protocol up to a total up to a total of [*] dollars ($[*])
    and agrees to pay fifty percent (50%) of such costs exceeding a total 
    of [*] dollars ($[*]) but less than a total of [*]dollars ($[*]) for a 
    maximum additional amount of [*] dollars ($[*]). [*] agrees to supply 
    the Paclitaxel and container closure system for stability studies.
    
    C.   A payment of Three Hundred Thousand Dollars ($300,000) to be paid 
    within 10 days after the FDA has submitted its preapproval inspection 
    report on [*]'s facility [*] and the FDA has indicated that it is 
    satisfied with [*]'s response to any deficiency, if any is cited, 
    observed in this FDA inspection report.  [*]agrees to send to SuperGen a 
    copy of the FDA inspectors initial observations and the official 
    Establishment Inspection Report of every FDA inspection of the [*] 
    facility for production of Bulk Paclitaxel.

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                                   [*] REDACTED CONFIDENTIAL TREATMENT REQUESTED


3.  SuperGen agrees to purchase a minimum of [*] of Paclitaxel before the end
    of one year from the date of approval of SuperGen's ANDA for Paclitaxel
    drug product. After SuperGen has purchased [*] of Paclitaxel the payments
    pursuant to paragraph 2B and 2C, subject to the provisions of paragraph 7
    shall be creditable against orders of Paclitaxel from [*] after commercial
    production of Paclitaxel approved by the FDA has begun.

4.  SuperGen agrees to an initial purchase price of [*] dollars ($[*]) per
    kilogram of Paclitaxel; however, in the event that SuperGen's average
    wholesale selling price to its customers of generic Paclitaxel drug product
    falls below $[*] per 30 mg vial, [*] and SuperGen will implement a lower
    bulk Paclitaxel purchase price which shall then be effective according to
    the following schedule:

       Average Wholesale Price
      30 Mg/vial Paclitaxel                              Bulk Drug Cost (Kg)
      ---------------------                           -------------------------

    $[*]/30 mg vial, or higher                        $[*]/Kg

    $[*]/30mg vial, or higher but below $[*]          $[*]/Kg

    $[*]/30 mg vial, or higher but below $[*]         $[*]/Kg

    $[*]/30 mg vial, or higher but below $[*]         $[*]/Kg

    Below $[*]/30 mg vial                             $[*]/Kg

    SuperGen agrees to present in confidence to [*] reasonable evidence from
    SuperGen's sales records of the immediately previous forty five days of any
    average wholesale selling price decline of Paclitaxel before any price
    change becomes effective.

5.  SuperGen agrees to issue to [*] an irrevocable Letter of Credit on account
    of a bank mutually acceptable to SuperGen and [*] in the amount of
    [*] Dollars ($[*]) at the time of the payment pursuant to paragraph 2A of 
    this Agreement, an additional irrevocable Letter of Credit in the amount of 
    [*] Dollars ($[*]) at the time of payment pursuant to paragraph 2B of this
    Agreement, and a further additional irrevocable Letter of Credit in the
    amount of [*] Dollars ($[*]) at the time of the payment pursuant to 
    paragraph 2C, which shall be security for delivery of SuperGen's initial 
    purchase and partial subsequent purchases of Paclitaxel. The irrevocability 
    of the above-mentioned Letters of Credit shall be subject to the provisions
    of paragraphs 7 and 12 F of this Agreement.

6.  [*] shall be free to sell Paclitaxel to any party in any place for any
    purpose and SuperGen shall be free to purchase Paclitaxel from third
    parties.

7.  If Bristol Myers-Squibb's exclusivity period for Taxol does not expire in
    December 1997 because of further extension, addition or replacement by
    another right or period of exclusivity, SuperGen's obligation to purchase
    Paclitaxel in the agreed period shall be suspended at SuperGen's option,


                                                                              3

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                                   [*] REDACTED CONFIDENTIAL TREATMENT REQUESTED


    the payments under paragraph 2B and 2C shall be refunded to SuperGen, and
    all of the Letters of Credit issued under paragraph 5 of this Agreement
    shall become revocable by SuperGen.

8.  [*] agrees to send to SuperGen a complete copy of the Analytical Methods
    used to characterize the Product, complete Validation Data for the
    Analytical Methods, and copy of the Environmental Impact Statement for the
    Product within one month of the signing of this Agreement.

9.  None of the Product supplied to SuperGen under this Agreement shall be
    adulterated or misbranded within the meaning of the Federal Food, Drug and
    Cosmetic Act, as amended and in effect at the time of shipment (the "ACT"),
    or within the meaning of any state or municipal laws applicable to
    pharmaceuticals or the Product and containing terms with substantially
    similar meanings as the meanings of adulteration or misbranding under the
    Act; provided however, that this provision shall not apply to, and [*]
    shall have no responsibility for, misbranding caused directly by SuperGen
    as a result of labels or package text specified by SuperGen for the
    Product.

    [*] will provide written notice to SuperGen of any proposed alterations to
    the Facility or to any Product manufacturing or testing process; provided
    however, that under no circumstances shall any such alteration be made
    without SuperGen's prior written consent, or before regulatory approval if
    required for any such alteration is received in each country in which
    Product is being sold.

    The parties agree to the following terms concerning shipment, delivery and
    return of non-conforming Products.

    A.   The agreed price per kilogram of Paclitaxel pursuant to paragraph 4 of
    this Agreement includes [*]'s payment of all shipping, freight forwarding
    fees, taxes, customs, duties, licenses, permits and other governmental fees
    and documentation [*] [*]. After delivery, SuperGen shall be
    responsible for all payments of all taxes, customs, duties, licenses,
    permits, and any other governmental requirements [*]. [*] and [*] agrees to
    replace such Product as maybe lost in shipment at this price.

    B.   The shipments shall each include a complete certificate of analysis
    including lot number or numbers and expiration date of not less than
    eighteen (18) months from the date of arrival [*].

    C.   In the event that a monograph for Paclitaxel is approved by the
    U.S.P., the Product shall meet any specifications of the U.S.P. monograph
    and all tests used to characterize the Product described by the U.S.P.
    monograph will be run in conformity with the U.S.P. prescribed tests. In


                                                                              4

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                                   [*] REDACTED CONFIDENTIAL TREATMENT REQUESTED


    the event that the requirements of the FDA conflict with the U.S.P.
    monograph for the Product and [*]'s manufacturing and control process of
    Product described in the DMF, the parties will consult to seek a mutually
    acceptable solution.

    D.   The Product shall be delivered to SuperGen with a completed Materials
    Safety Data Sheet, a letter authorizing SuperGen and its agents to refer to
    the DMF filed with the FDA, a Certificate of Analysis describing all
    current requirements of the Specifications, results of tests performed and
    a copy of the Batch Release Sheet certifying that the batch(es) of Product
    supplied has been manufactured, controlled, and released according to the
    Specifications, valid DMF and all relevant and current GMP requirements at
    the manufacturing facility.

    E.   [*] warrants that the Product is merchantable and fit for the intended
    purpose of further sterile processing to make parenteral pharmaceutical
    preparations, that the Product shipped in fulfilment of any order has been
    made, stored, and shipped in full compliance with Current Good
    Manufacturing Practices of the U.S. Food And Drug Administration and that
    the Product conforms to current Specifications. Prior to each shipment of
    Product, [*] shall perform quality control procedures to verify that all of
    the Product to be shipped conforms fully with the Specifications.

    F.   SuperGen shall have 30 days from the date of delivery of the Product
    to SuperGen to complete analysis of the Product. If the Product conforms to
    Product Specifications agreed to by SuperGen and [*] as reflected by the
    certificate of analysis, SuperGen shall authorize payment under the Letters
    of Credit. If the Letters of Credit mentioned in paragraph 5 of this
    Agreement are exhausted, SuperGen agrees, at its sole option, to issue a
    new sufficient Letter of Credit or will tender a cash deposit in the amount
    of 50% of the original purchase price at the time when order is placed. The
    shipment will be delivered upon receipt of (i) the new Letter of Credit or
    (ii) the deposit, and in the event that the shipment is made on deposit the
    remaining 50% of the purchase price will be due within 30 days of arrival
    of the shipment [*], provided that the Product conforms to
    the certificate of analysis. For the analysis SuperGen agrees to use a
    laboratory that has participated in and satisfactorily completed the method
    transfer protocol for all methods used in the analysis of the Product.

    G.   If the Product fails to conform to the certificate of
    analysis, SuperGen shall immediately notify the [*] and [*] offices of [*]
    via facsimile, diligently investigate the failure, determine whether to
    reassay or to resample and retest, and complete such reassay or retest
    within six weeks of the date of receiving the Product. If the Product again
    fails to conform, SuperGen shall immediately notify the [*] and [*] offices
    of [*], and [*] shall replace the non-conforming Product with conforming
    Product (the "First Replacement Goods") within 10 working days of such
    notification. SuperGen shall have 30 days from the date of delivery of the
    First Replacement Goods to SuperGen to complete analysis of the First
    Replacement Goods. If the First Replacement Goods fail to conform to the
    certificate of analysis, SuperGen shall immediately notify the [*] and [*]
    offices of [*] via facsimile, and [*] shall replace the non-conforming
    First Replacement Goods with conforming Product (the "Second Replacement
    Goods") within 10 working days of such notification.


                                                                              5

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                                   [*] REDACTED CONFIDENTIAL TREATMENT REQUESTED


    SuperGen shall have 30 days from the date of delivery of the Second
    Replacement Goods to SuperGen to complete analysis of the Second
    Replacement Goods. If the Second Replacement Goods fail to conform to the
    certificate of analysis, SuperGen shall immediately notify the [*] and [*]
    offices of [*] via facsimile. SuperGen and [*] agree to use a laboratory
    mutually acceptable to the parties which shall have authority to arbitrate
    the test results and objectively determine the results of the reassay, or
    resample and retest as the case may be and complete such arbitration within
    10 days. If the Product is found to conform to Product Specifications then
    SuperGen agrees to accept the Product and pay for the arbitration costs
    incurred. If the Product is found to be non-conforming to Product
    Specifications, [*] shall pay for the arbitration costs incurred. SuperGen
    agrees to hold the non-conforming Product for a period of two weeks for [*]
    to investigate the failure and to return the shipment of non-conforming
    Product to the [*] office of [*], if [*] decides not to investigate. If
    [*] cannot supply conforming goods in the First Replacement Goods and the
    Second Replacement Goods shipment, or cannot make an original shipment or
    replacement shipment, SuperGen shall have the right to obtain bulk
    Paclitaxel from any other vendor who can supply bulk Paclitaxel meeting the
    acceptance specification for Paclitaxel, and [*] shall pay the increase in
    cost, if any, up to Ten Percent (10%) of the agreed original purchase price
    between [*] and SuperGen and the price for the same amount of bulk
    Paclitaxel ordered from [*] but obtained from a third party.

    H.   SuperGen agrees to initially order [*] of Paclitaxel from [*] upon FDA
    approval of [*]'s manufacturing facility. At the time of the initial order,
    SuperGen shall notify [*] of the amount of Paclitaxel it expects to order
    for the subsequent quarter. No less than thirty days before the subsequent
    quarter, SuperGen shall confirm the amount. SuperGen shall order Paclitaxel
    in this manner for all orders after the initial order.

10. Representations and Warranties

    A.   [*] [*] represents and warrants that: (I) it has full power to enter
    into this Agreement and to grant and to assign to SuperGen, Inc. the rights
    granted and assigned to SuperGen Inc. hereunder. (ii) it has obtained all
    necessary corporate approvals to enter into and execute the Agreement.
    (iii) it has not entered and will not enter into any Agreements with any
    third party that are inconsistent with this Agreement; (iv) [*] shall fully
    comply with the requirements of any and all applicable federal, state,
    local and foreign laws regulations, rules and orders of any governmental
    body having jurisdiction over the activities contemplated by this
    Agreement [*].

    B.   SUPERGEN   SuperGen represents and warrants that (i) it has full power
    to enter into this agreement; and (ii) it has obtained all necessary
    corporate approvals to enter into and execute the Agreement (iii) it has
    not entered and will not enter into any agreements with any third party
    that are inconsistent with this Agreement; (iv) SuperGen shall fully comply
    with the requirements of any and all applicable federal, sate, local and
    foreign laws regulations, rules and orders of any governmental body having
    jurisdiction over the activities contemplated by this Agreement [*]


                                                                              6

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                                   [*] REDACTED CONFIDENTIAL TREATMENT REQUESTED


    [*].

11A.SuperGen will indemnify defend and hold harmless [*] its directors,
    officers, employees, agents, successors and assigns from and against any
    liabilities, expenses or costs (including reasonable attorney's fees)
    arising out of any claim, complaint, suit, proceeding or cause of action
    against any of them by a third party alleging physical injury or death or
    otherwise resulting from (i) the promotion, distribution, sale, handling,
    possession or use of the Product by or on behalf of SuperGen following its
    or their acceptance thereof in accordance with paragraph 9 of this
    Agreement (ii) the clinical use or testing of SuperGen's pharmaceutical
    products incorporating Product, (iii) the negligent or intentional wrongful
    acts or omissions of SuperGen and (iv) any breach by SuperGen of its
    representations and warranties under paragraph 10 of this agreement, in
    each case subject to the requirements set forth in paragraph 11 C of this
    agreement. Notwithstanding the foregoing, SuperGen shall have no
    obligations under this paragraph for any liabilities, expenses or costs
    arising out of on relating to claims covered under paragraph 11(B) below.

    B.   [*] shall indemnify defend and hold harmless SuperGen its directors,
    officers, employees, agents, successors and assigns from and against any
    liabilities, expenses or costs (including reasonable attorneys' fees)
    arising out of any claim, complaint, suit, proceeding or cause of action
    against any of them by a third party alleging physical injury or death or
    otherwise resulting from (i) the negligent or intentionally wrongful acts
    or omissions of [*]; (ii) the loss of Product for which [*] bears the risk
    and (iii) any breach by [*] of paragraphs 9 and 10 of this Agreement, in
    each case subject to the requirements set forth in paragraph 11 C of this
    Agreement.

    C.   Any party seeking indemnification under this Article (the
    "Indemnitee") shall (i) promptly notify the indemnifying party (the
    "Indemnitor") of such claim (ii) provide the Indemnitor sole control over
    the defense and or settlement thereof and (iii) at the Indemnitor's request
    and expense provide full information and reasonable assistance to
    Indemnitor with respect to such claims. Without limiting the forgoing with
    respect to claims brought under paragraphs 11 A and 11 B above, the
    Indemnitee, at its own expense shall have the right to participate with
    counsel of its own choosing in the defense and/or settlement of any such
    claim.

12. General Provisions

    A.   ASSIGNMENT. The parties agree that their rights and obligations under
    this Agreement may not be assigned or otherwise transferred to a third
    party without the prior written consent of the other party hereto.
    Notwithstanding the foregoing, either party may transfer or assign its
    rights and obligations under this Agreement to a successor to all or
    substantially all of its business or assets relating to this Agreement
    whether by sale, merger, operation of law or otherwise; provided that such
    assignee or transferee has agreed to be bound by the terms and conditions
    of this Agreement. Subject to the foregoing, this Agreement shall be
    binding upon and insure to the benefit of the parties hereto, their
    successors and assigns.


                                                                              7

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                               [*] REDACTED CONFIDENTIAL TREATMENT REQUESTED


    B.   GOVERNING LAW. This Agreement shall be governed by, and construed and
    interpreted in accordance with, the laws of the State of California without
    reference to conflict of laws principles [*].

    C.   ARBITRATION. Any dispute or claim arising out of or in connection 
    with this Agreement or the performance, breach or termination thereof, 
    shall be finally settled by binding arbitration in San Francisco, 
    California under the Rules of Arbitration [*] by three (3) arbitrators 
    appointed in accordance with said rules. The decision and/or award 
    rendered by the arbitrators shall be written, final and non-appealable 
    and may be entered in any court of competent jurisdiction. The parties 
    agree that, any provision of applicable law notwithstanding, they will 
    not request, and the arbitrator shall have no authority to award, 
    punitive or exemplary damages against any party. The costs of any 
    arbitration, including administrative fees and fees of the arbitrators, 
    shall be shared equally by the parties, unless otherwise determined by 
    the arbitrators. Each party shall bear the cost of its own attorneys' and 
    expert fees [*]. Notwithstanding the foregoing, either party may apply 
    to any court of competent jurisdiction for injunctive relief without 
    breach of this arbitration provision.

    D.   NOTICES.  Any notice or report required or permitted to be given or
    made under this agreement by either party shall be in writing and delivered
    to the other party at its address indicated below (or to such other address
    as a party may specify by notice hereunder by courier or by registered or
    certified airmail, postage prepaid, or by facsimile; provided, however,
    that all facsimile notices shall be promptly confirmed, in writing, by
    registered or certified airmail, postage prepaid. All notices shall be
    effective as of the date received by the addressee:

    If to SuperGen, Inc.:         SuperGen, Inc.
                                  2 Annabel Lane, Suite 220
                                  San Ramon, CA 94583
                                  Attn: Dr. Joseph Rubinfeld

    With a copy to:               Wilson, Sonsini, Goodrich & Rosati
                                  650 Page Mill Road
                                  Palo Alto, California 94304-1050
                                  Attn: Paige Maillard, Esq.

    If to [*]:                    [*]


                                                                              8

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                                   [*] REDACTED CONFIDENTIAL TREATMENT REQUESTED


    With a copy to:               [*]

    With a copy to:               [*]


    E.   LIMITATION OF LIABILITY. Neither party shall be liable to the other
    party or any third party for any special, consequential, exemplary or
    incidental damages (including lost or anticipated revenues or profits
    relating to the same), arising from any claim relating to this agreement,
    whether such claim is based on contract, tort (including negligence) or
    otherwise, even if an authorized representative of such party is advised of
    the possibility or likelihood of same. These limitations shall apply
    notwithstanding the failure of the essential purpose of any limited remedy,
    and the parties acknowledge that this paragraph represents a reasonable
    allocation of risk.

    F.   FORCE MAJEURE. Neither party will be liable for its failure to perform
    any of its obligations hereunder during any period in which such
    performance is delayed by acts of God, fire, war, embargo, riots, strikes
    or other similar cause outside the control of such party; however,
    notwithstanding the forgoing, if during such period, [*] fails for 90
    consecutive days to deliver Product ordered by SuperGen, the balance of any
    Letters of Credit not yet drawn upon shall be revoked, and payment under
    paragraphs 2 B and 2 C which has not yet been credited against Product
    already delivered to SuperGen, shall be refunded by [*] to SuperGen.

    G.   CONFIDENTIAL TERMS. Except as expressly provided herein, each party
    agrees not to disclose any terms of this Agreement to any third party
    without the consent of the other party, except as required by securities or
    other applicable laws, to prospective investors and to such party's
    accountants, attorneys and other professional advisors.

    H.   HEADINGS. Headings included herein are for convenience only, do not
    form a part of this Agreement and shall not be used in any way to construe
    or interpret this Agreement.

    I.   NON-WAIVER. Any waiver of the terms and conditions hereof must be
    explicitly in writing. The waiver by either of the parties of any breach of
    any provision hereof by the other shall not be construed to be a waiver of
    any succeeding breach of such provision or a waiver of the provision
    itself.

    J.   SEVERABILITY. Should any section, or portion thereof, of this
    Agreement be held invalid by reason of any law, statute or regulation
    existing now or in the future in any jurisdiction by any court of competent
    authority or by a legally enforceable directive of any governmental body,
    such section or portion thereof shall be validly reformed so as to
    approximate the intent of the parties



                                                                              9

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                                   [*] REDACTED CONFIDENTIAL TREATMENT REQUESTED


    as nearly as possible and, if unreformable, shall be deemed divisible and
    deleted with respect to such jurisdiction, but the Agreement shall not
    otherwise be affected.

    K.   INDEPENDENT CONTRACTORS. The relationship of SuperGen, Inc. and [*]
    established by this Agreement is that of independent contractors. Nothing
    in this Agreement shall be construed to create any other relationship
    between SuperGen, Inc., and [*]. Neither party shall have any right, power
    or authority to assume, create or incur any expense, liability or
    obligation, express or implied on behalf of the other.

    L.   ENTIRE AGREEMENT. The terms and provisions contained in the Agreement,
    including the Exhibits hereto, constitute the entire Agreement between the
    parties and shall supersede all previous communications, representations,
    Agreements or understandings, either oral or written, between the parties
    with respect to the subject matter hereof.  No Agreement or understanding
    varying or extending this Agreement shall be binding upon either party
    hereto, unless set forth in a writing which specifically refers to the
    Agreement signed by duly authorized officers or representatives of the
    respective parties, and the provisions hereof not specifically amended
    thereby shall remain in full force and effect.

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

The forgoing is AGREED and ACCEPTED

For [*]                                          For SuperGen


                                                 /s/ Dr. Joseph Rubinfeld
-------------------------------------            ------------------------------
[*]                                              Dr. Joseph Rubinfeld
President and Chief Executive Officer            President and Chief Executive
                                                 Officer
[*]                                              SuperGen, Inc.


May 7, 1997                                      May 7, 1997
-----------------------------------              ------------------------------
Date                                             Date



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                                      EXHIBIT A

                                    Specification


The Product shall have the following minimum characteristics and limits
specified in the certificate of analysis and these limits, unless otherwise
agreed to between the parties, shall be SuperGen's acceptance criteria for the
Product:

   1.    Identity:                     [*]
   2.    Appearance:
   3.    Potency by HPLC:              [*]
   4.    Related Substances:           [*]
                                       
                                       
                                       
                                       
                                       
                                       
                                       
    5.   Moisture:                     

Both parties agree to further discuss the viability and necessity of including
batch information on the following characteristics of the Product: Specific
Rotation, Crystallinity, Residual Solvent, pH, Residue on Ignition, Heavy
Metals, Microbiological Counts and Endotoxin. [*] agrees to make its best effort
to ensure that any or all of the above characteristics required by FDA will meet
with FDA standards. SuperGen agrees to provide [*] with technical assistance in
finding the best method development for acquiring information on these
characteristics.