PHARMACOPEIA INC
10-Q, 1996-11-12
COMMERCIAL PHYSICAL & BIOLOGICAL RESEARCH
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<PAGE>


                                    UNITED STATES
                          SECURITIES AND EXCHANGE COMMISSION
                                WASHINGTON, D.C. 20549

                                      FORM 10-Q

[X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE
    ACT OF 1934

For the quarterly period ended September 30, 1996

                                          or

[ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
    EXCHANGE ACT OF 1934

                           Commission File Number:  0-27118

                                  PHARMACOPEIA, INC.
- --------------------------------------------------------------------------------
                (Exact name of registrant as specified in its charter)

         Delaware                           33-0557266
- --------------------------------------------------------------------------------
(State or other jurisdiction of        (I.R.S. Employer Identification No.)
incorporation or organization)

        101 College Road East, Princeton, New Jersey            08540
- --------------------------------------------------------------------------------
(Address of principal executive offices)                        (Zip code)

                                    (609) 452-3600
- --------------------------------------------------------------------------------
                 (Registrant's telephone number, including area code)

                                    Not Applicable
- --------------------------------------------------------------------------------
(Former name, former address and former fiscal year, if changed since last
report)

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding 12 months (or for such shorter period that the registrant was 
required to file such reports) and (2) has been subject to such filing 
requirements for the past 90 days -- Yes  X   No
                                         ---     ---

                                                                Outstanding at
                      Class                                    October 31, 1996
- ---------------------------------------------                 ------------------
Common Stock, $.0001 par value                                    10,976,462


<PAGE>

                                  PHARMACOPEIA, INC.
                                      FORM 10-Q
                                  TABLE OF CONTENTS

ITEM                                                                       Page
PART I.  FINANCIAL INFORMATION                                                 

Item 1.     Financial Statements:

            Balance Sheets-September 30, 1996 and December 31, 1995         3

            Statements of Operations-Three and Nine Months Ended
            September 30, 1996 and 1995                                     4

            Statements of Cash Flows-Nine Months Ended
            September 30, 1996 and 1995                                     5

            Notes to Financial Statements                                   6

Item 2.     Management's Discussion and Analysis of Financial
            Condition and Results of Operations                             6

PART II.  OTHER INFORMATION                                                 

Item 6.     Exhibits and Reports on Form 8-K                                9

SIGNATURE                                                                  11

INDEX TO EXHIBITS                                                          12


                                         -2-

<PAGE>

                                        PART I
                                FINANCIAL INFORMATION

ITEM 1.  FINANCIAL STATEMENTS

                                  PHARMACOPEIA, INC.

                                    BALANCE SHEETS
                           (IN THOUSANDS EXCEPT SHARE DATA)

<TABLE>
<CAPTION>
                                                                                        September 30,      December 31,
                                                                                            1996               1995
                                                                                       --------------   -----------------
                                                                                        (Unaudited)

<S>                                                                                    <C>              <C>
ASSETS
CURRENT ASSETS:
     Cash and cash equivalents                                                         $   32,731          $   28,612
     Marketable securities                                                                 44,223              32,288
     Prepaid expenses and other current assets                                              1,026               1,155
                                                                                       ----------          ----------

TOTAL CURRENT ASSETS                                                                       77,980              62,055
     Property and equipment, net                                                            7,823               2,928
     Intangible assets, net                                                                    32                  63
     Other assets                                                                             767                 495
                                                                                       ----------          ----------
                                                                                       $   86,602          $   65,541
                                                                                       ----------          ----------
                                                                                       ----------          ----------
LIABILITIES AND STOCKHOLDERS' EQUITY
CURRENT LIABILITIES:
     Accounts payable                                                                  $      786          $      500
     Accrued liabilities                                                                    1,960               1,741
     Notes payable and capital lease obligations, current portion                             709                 398
     Deferred revenue                                                                      14,885               7,599
                                                                                       ----------          ----------
TOTAL CURRENT LIABILITIES                                                                  18,340              10,238

NOTES PAYABLE AND CAPITAL LEASE OBLIGATIONS, LONG-TERM PORTION                              1,576                 969

COMMITMENTS

STOCKHOLDERS' EQUITY:
     Preferred stock, $.0001 par value, 2,000,000 shares authorized; none issued and
       outstanding
     Common stock, $.0001 par value; 40,000,000 shares authorized; 10,969,913 and
       10,272,527 shares issued and outstanding at September 30, 1996 and December 31,
       1995, respectively                                                                       1                   1
     Additional paid-in capital                                                            92,400              73,745
     Accumulated deficit                                                                  (25,715)            (19,412)
                                                                                       ----------          ----------
TOTAL STOCKHOLDERS' EQUITY                                                                 66,686              54,334
                                                                                       ----------          ----------
                                                                                       $   86,602          $   65,541
                                                                                       ----------          ----------
                                                                                       ----------          ----------

</TABLE>


                  See notes to these unaudited financial statements.


                                         -3-

<PAGE>

                                  PHARMACOPEIA, INC.

                               STATEMENTS OF OPERATIONS
                                     (UNAUDITED)

<TABLE>
<CAPTION>

                                             Three Months Ended September 30,         Nine Months Ended September 30,
                                            ----------------------------------      ----------------------------------
                                                    1996             1995                   1996             1995     
                                            ----------------  ----------------      ----------------  ----------------
                                                               (In thousands except share data)
<S>                                          <C>               <C>                  <C>               <C>
Contract revenue                             $     4,652       $    1,541             $     9,506       $    3,648
Operating expenses:
    Research and development
       Collaborative                                3,751            1,541                   8,638            3,706
       Proprietary                                  2,227            1,357                   5,967            3,866
    General and administrative                      1,361              882                   3,931            2,607
                                              -----------       ----------             -----------       ----------
Operating loss                                     (2,687)          (2,239)                 (9,030)          (6,531)
Interest income                                     1,036              145                   2,920              536
Interest expense                                      (78)             (28)                   (192)             (60)
                                              -----------       ----------             -----------       ----------
Net loss                                      $    (1,729)      $   (2,122)            $    (6,302)      $   (6,055)
                                              -----------       ----------             -----------       ----------
                                              -----------       ----------             -----------       ----------
Net loss per share                            $      (.16)      $     (.79)            $      (.59)      $    (2.26)
                                              -----------       ----------             -----------       ----------
                                              -----------       ----------             -----------       ----------
Weighted-average number of common shares
outstanding during the period                  10,967,630        2,677,489              10,770,825        2,677,489
                                              -----------       ----------             -----------       ----------
                                              -----------       ----------             -----------       ----------

</TABLE>


                  See notes to these unaudited financial statements


                                         -4-

<PAGE>

                                  PHARMACOPEIA, INC.

                               STATEMENTS OF CASH FLOWS

                                    (IN THOUSANDS)
                                     (UNAUDITED)

<TABLE>
<CAPTION>

                                                                      Nine Months Ended September 30,
                                                                      -------------------------------
                                                                          1996              1995
                                                                      ------------      -------------
<S>                                                                   <C>                <C>
CASH FLOWS FROM OPERATING ACTIVITIES
Net loss                                                              $  (6,302)        $  (6,055)
Adjustments to reconcile net loss to net cash provided by 
  (used in) operating activities:
    Depreciation                                                          1,032               323
    Amortization                                                             30                30
    Changes in operating assets and liabilities:
       (Increase) decrease in prepaid expenses and other 
         current assets                                                     129              (265)
       (Increase) in other assets                                          (272)             (216)
       Increase (decrease) in accounts payable                              286               (17)
       Increase in accrued liabilities                                      220                38
       Increase (decrease) in deferred revenue                            7,286            (1,586)
                                                                      ---------         ---------
Net cash provided by (used in) operating activities                   $   2,409         $  (7,748)
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures                                                     (5,927)           (1,957)
Purchase of marketable securities                                       (74,463)           (9,103)
Proceeds from sales of marketable securities                             62,528            13,109
                                                                      ---------         ---------
Net cash provided by (used in) investing activities                   $ (17,862)        $   2,049
CASH FLOWS FROM FINANCING ACTIVITIES
Net proceeds from issuance of common stock                               18,655                 1
Net proceeds from issuance of convertible preferred stock                                   3,500
Acquisition of treasury stock                                                                  (2)
Increase in notes payable                                                 1,344               782
Repayments of note payable                                                 (427)             (136)
                                                                      ---------         ---------
Net cash provided by financing activities                                19,572             4,145
                                                                      ---------         ---------
Increase (decrease) in cash and cash equivalents                          4,119            (1,554)
Cash and cash equivalents at beginning of period                         28,612             9,485
                                                                      ---------         ---------
Cash and cash equivalents at end of period                            $  32,731         $   7,931
                                                                      ---------         ---------
                                                                      ---------         ---------

</TABLE>


                  See notes to these unaudited financial statements


                                         -5-

<PAGE>

                                  PHARMACOPEIA, INC.

                            NOTES TO FINANCIAL STATEMENTS
                                     (UNAUDITED)


NOTE (1) -- BASIS OF PRESENTATION

      The unaudited financial statements have been prepared in accordance with
generally accepted accounting principles for interim financial information. 
Accordingly, they do not include all of the information and footnotes required
by generally accepted accounting principles for complete financial statements. 
In the opinion of management, all adjustments (consisting of normal recurring
accruals) considered necessary for a fair presentation have been included. 
Interim results are not necessarily indicative of the results that may be
expected for the year.  For further information, refer to the financial
statements and footnotes thereto included in the Company's Annual Report on
Form 10-K for the year ended December 31, 1995.

NOTE (2) -- NET LOSS PER COMMON SHARE

      Net loss per common share is based on net loss for the relevant period
divided by the weighted average number of shares issued and outstanding during
the period.  Stock options and common stock issuable upon conversion of warrants
are not reflected as their effect would be antidilutive for both primary and
fully diluted earnings per share computations.

NOTE (3) -- COLLABORATION AND STOCK PURCHASE AGREEMENTS

      On May 31, 1996, the Company entered into a Collaboration Agreement and 
Common Stock Purchase Agreement with N.V. Organon ("Organon"). Organon 
purchased 168,623 shares of the Company's common stock for $4,165,000 and 
under the terms of the Collaboration Agreement will provide research 
funding, license fees and future milestone payments as products are developed.

NOTE (4) -- LONG-LIVED ASSETS

      On January 1, 1996, the Company adopted SFAS No. 121, "Accounting For the
Impairment of Long-Lived Assets and for Long-Lived Asssets to be Disposed Of."
The Company records impairment losses on long-lived assets used in operations
and intangible assets, when events and circumstances indicate that the assets 
might be impaired and the undiscounted cash flow estimated to be generated by 
those assets are less than the carrying amounts of those assets.  The 
adoption of SFAS 121 had no material impact on the Company's financial 
condition or results of operations. 

ITEM 2. MANAGEMENTS DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS 
        OF OPERATIONS

OVERVIEW

      Pharmacopeia, Inc. ("Pharmacopeia" or the "Company") was incorporated 
in March 1993 and is engaged in research and development and chemical library 
production for collaborations and for its own use.  The Company's research 
and development has focused on efficient, cost effective, high throughput 
systems for synthesizing and screening large libraries of chemicals for new 
drug discovery and optimization.  The Company has incurred losses since 
inception and, as of September 30, 1996 had an accumulated deficit of $25.7 
million.  The Company anticipates incurring additional losses over at least 
the next several years as it expands its research and development and 
chemical library production efforts.  The Company expects that its losses 
will fluctuate from quarter to quarter and that such variations may be 
substantial.

                                         -6-

<PAGE>

RESULTS OF OPERATIONS

      The Company expects that its revenue sources for at least the next
several years will be limited to future collaboration payments from Schering
Corporation and Schering-Plough Ltd. ("Schering-Plough"), Berlex Laboratories,
Inc. ("Berlex"), Sandoz Pharma, Ltd. ("Sandoz"), Bayer Corporation ("Bayer"),
Daiichi Pharmaceutical Co., Ltd. ("Daiichi"), N.V. Organon ("Organon") and 
from other customers under arrangements that may be entered into in the 
future.  The timing and amounts of such revenues, if any, will likely 
fluctuate. Historical results should not be viewed as indicative of future 
operating results.  The Company will be required to conduct significant 
research, development and production activities during the next several years 
to fulfill its obligations under the Schering-Plough, Berlex, Sandoz, Bayer, 
Daiichi, and Organon collaborative agreements and to develop other 
collaborations and technologies.  The Company does not anticipate having net 
income in the next several years.

      THREE MONTHS ENDED SEPTEMBER 30, 1996 AND 1995

      Revenues totaled $4.6 million and $1.5 million in the three months 
ended September 30, 1996 and 1995, respectively. The increase of $3.1 million 
primarily reflects expanded efforts in the Company's collaborations with 
Schering-Plough, Berlex, Sandoz, Bayer, Daiichi and Organon. The 1995 
revenues were attributable entirely to the Schering-Plough and Berlex 
collaborations.

      The Company incurred research and development expenses of $6.0 million 
and $2.9 million in the three months ended September 30, 1996 and September 
30, 1995, respectively.  These increased amounts primarily reflect increased 
salaries and personnel expenses inasmuch as the Company continued to hire 
additional research and development personnel, equipment depreciation and 
facilities expenses, and laboratory supplies purchased in connection with the 
expansion of the Company's chemical library production and screening efforts 
for collaborations and for its own use.

      General and administrative expenses increased by $0.5 million to $1.4 
million for the three months ended September 30, 1996 from the three months 
ended September 30, 1995.  The increase is primarily attributable to 
increased payroll and personnel expenses inasmuch as the Company continued 
to hire additional management and administrative personnel and the increased 
legal, insurance and other professional fees incurred in connection with the 
overall scale up of the Company's operations.

      The Company had interest income of $1.0 million and $0.1 million in the 
three months ended September 30, 1996 and 1995, respectively.  The increase 
in interest income resulted from higher balances of cash and investment 
securities from the public offering of common stock and to a lesser extent, 
from research collaboration payments. Interest expense for both periods is a 
result of increases in notes payable and capital lease obligations.

      NINE MONTHS ENDED SEPTEMBER 30, 1996 AND 1995

      Revenues totaled $9.5 million and $3.6 million in the nine months ended 
September 30, 1996 and 1995, respectively. The increase of $5.9 million 
primarily reflects expanded efforts in the Company's collaborations with 
Schering-Plough, Berlex, Sandoz, Bayer, Daiichi and Organon. The 1995 
revenues were attributable entirely to the Schering-Plough and Berlex 
collaborations.

      The Company incurred research and development expenses of $14.6 million 
and $7.6 million in the nine months ended September 30, 1996 and September 
30, 1995, respectively. These increased amounts primarily reflect increased 
salaries and personnel expenses inasmuch as the Company continued to hire 
additional research and development personnel, equipment depreciation and 
facilities expenses, and laboratory supplies purchased in connection with the 
expansion of the Company's chemical library production and screening efforts 
for collaborations and for its own use.

                                         -7-

<PAGE>

      Research and development expenses are expected to continue to increase 
as the Company further expands its activities and incurs, among other things, 
expenses related to staff increases, increased rent for expanded facilities, 
and increased equipment and reagent purchases.

      General and administrative expenses increased by $1.3 million to $3.9 
million for the nine months ended September 30, 1996 from the nine months 
ended September 30, 1995.  The increase is primarily attributable to 
increased payroll and personnel expenses inasmuch as the Company continued to 
hire additional management and administrative personnel and increased legal, 
insurance and other professional fees incurred in connection with the overall 
scale up of the Company's operations.

      The Company had interest income of $2.9 million and $0.5 million in the 
nine months ended September 30, 1996 and 1995, respectively.  The increase in 
interest income resulted from higher balances of cash and investment 
securities from the public offering of common stock and to a lesser extent, 
from research collaboration payments. Increases in interest expense for both 
periods is a result of increases in notes payable and capital lease 
obligations.

LIQUIDITY AND CAPITAL RESOURCES

      As of September 30, 1996, the Company had working capital of $59.6 
million.  The Company has funded its activities through September 30, 1996 
primarily through the sale of equity securities, funding under collaborative 
arrangements and equipment financing.  From inception through September 30, 
1996, the Company received $92.4 million in net proceeds from equity 
financing, received $26.8 million in research and development and license 
fees under collaborative agreements, and utilized $3.0 million of equipment 
financing.

      In connection with the Company's agreement with the Trustees of 
Columbia University and Cold Spring Harbor Laboratory, the Company is 
required to pay annual license fees and, in addition, expend $3.0 million and 
$4.0 million for the one year periods ending mid-July 1996 and 1997, 
respectively, in development and commercialization of the licensed 
technology. The $3.0 million expenditure requirement for 1996 has been met by 
the Company.  The Company is also required to pay to Columbia University 
certain royalties.  In addition, as of September 30, 1996, the Company had 
outstanding commitments for construction and equipment purchases totaling 
$1.1 million.  The Company anticipates that its capital requirements will 
increase over the next two years as the Company expands its research and 
development activities.  In connection with such expansion, the Company 
expects to incur substantial expenditures for hiring additional management, 
scientific and administrative personnel and for planned expansion of its 
facilities and replacement of laboratories currently subleased, including 
acquisition of additional equipment.

      The Company anticipates that its existing capital resources will be 
adequate to fund the Company's operations at least through 1998.  There can 
be no assurance that changes will not occur that would consume available 
capital resources before such time.  The Company's capital requirements 
depend on numerous factors, including the ability of the Company to enter 
into additional collaborative arrangements, competing technological and 
market developments, changes in the Company's existing collaborative 
relationships, the cost of filing, prosecuting, defending and enforcing 
patent claims and other intellectual property rights, the purchase of 
additional capital equipment, the progress of the Company's drug discovery 
programs and the progress of the Company's customers' milestone and royalty 
producing activities. There can be no assurance that additional funding, if 
necessary, will be available on favorable terms, if at all.  The Company's 
forecasts of the period of time through which its financial resources will be 
adequate to support its operations is forward looking information, and actual 
results could vary.  The factors described earlier in this paragraph will 
impact the Company's future capital requirements and the adequacy of its 
available funds.

                                         -8-

<PAGE>

                                       PART II

                                  OTHER INFORMATION











                                         -9-

<PAGE>

      ITEM 6.        EXHIBITS AND REPORTS ON FORM 8-K

      (a)    Exhibits:

      3.1*           Restated Certificate of Incorporation of the Company.
      3.3*           Bylaws of the Company.
      4.3*           Stockholders Rights Agreement, dated February 15, 1995.
      10.1*          Series A and Series B Preferred Stock Purchase Agreement,
                     dated July 21, 1993.
      10.2*          Series B Preferred Stock Purchase Agreement, dated
                     March 11, 1994.
      10.3*          Series C Preferred Stock Purchase Agreement, dated
                     December 22, 1994.
      10.4*          Series D Preferred Stock Purchase Agreement, dated
                     February 15, 1995.
      10.5**         Amended 1994 Incentive Stock Plan.
      10.6*          1995 Employee Stock Purchase Plan.
      10.7*          1995 Director Option Plan.
      10.8*+         Library Collection Agreement, dated as of October 1, 1995,
                     between Pharmacopeia and Sandoz Pharma Ltd.
      10.9*+         Research, License, and Royalty Agreement, dated as of
                     February 15, 1995, between Pharmacopeia and Berlex
                     Laboratories, Inc.
      10.10*+        License Agreement, dated as of October 6, 1995, among
                     Pharmacopeia, the Trustees of Columbia University in the
                     City of New York and Cold Spring Harbor Laboratory.
      10.11*+        Collaboration Agreement, dated as of December 22, 1994,
                     between Pharmacopeia and Schering Corporation and
                     Schering-Plough, Ltd.
      10.12*+        Random Library Agreement, dated as of December 22, 1994,
                     between Pharmacopeia and Schering Corporation and
                     Schering-Plough, Ltd.
      10.13*         Lease Agreement between Pharmacopeia and Eastpark at 8A.
      10.13(a)**     Amendment dated January 22, 1996 to Lease Agreement
                     between Pharmacopeia and Eastpark at 8A
      10.13(b)****   Third Amendment to Lease Agreement dated March 31, 1996
                     between Pharmacopeia and Eastpark at 8A
      10.14*         Sublease, dated as of December 7, 1994, between
                     Pharmacopeia and Enichem Americas, Inc.
      10.15*         Lease, dated as of May 2, 1994, between Pharmacopeia and
                     College Road Associates Limited, as amended.
      10.15(a)**     Lease, dated as of December 1, 1995, between Pharmacopeia
                     and College Road Associates Limited, as amended.
      10.15(b)****   Third Execution and Modification of Lease dated June 7th,
                     1996, between Pharmacopeia and College Road Associates
                     Limited.
      10.16*         Sublease Agreement, dated as of October 29, 1993, between
                     Pharmacopeia and Cytogen Corporation.
      10.17*         Employment Agreement, dated October 4, 1994, between the
                     Company and Lewis J. Shuster.
      10.18*         Employment Agreement, dated January 18, 1994, between the
                     Company and Joseph A. Mollica, Ph.D.
      10.19*         Employment Agreement, dated May 18, 1993, between the
                     Company and John C. Chabala, Ph.D.



                                         -9-

<PAGE>


      10.20*         Employment Agreement, dated June 3, 1993, between the
                     Company and John J. Baldwin, Ph.D.
      10.21*         Employment Agreement, dated December 2, 1993, between the
                     Company and Nolan H. Sigal, M.D., Ph.D.
      10.22*         Consulting Agreement, dated April 30, 1993, between the
                     Company and W. Clark Still, Ph.D.
      10.23*         Warrant to purchase Common Stock issued to Columbia
                     University.
      10.24*         Warrant to purchase Common Stock issued to Cold Spring
                     Harbor Laboratory.
      10.25**+       Collaboration Agreement effective as of December 31, 1995
                     between Pharmacopeia and Bayer
      10.26**+       Random Library Agreement effective as of December 31, 1995
                     between Pharmacopeia and Bayer
      10.29**        Employment Agreement, dated January 24, 1996, between the
                     Company and Nancy M. Gray, Ph.D.
      10.30***++     Collaborative Agreement dated as of March 29, 1996 with
                     Daiichi Pharmaceutical Co., Ltd.
      10.31****++    Research Agreement between Pharmacopeia, Inc. and N.V. 
                     Organon dated May 31, 1996
      10.32          Employment Agreement, dated June 20, 1996, between the 
                     Company and Stephen A. Spearman, Ph.D.
      10.33          Lease Agreement, dated June 21, 1996, between 
                     Pharmacopeia and South Brunswick Rental I, Ltd.
      11.1*          Statement re Computation of Per Share Earnings
      27.1           Financial Data Schedule
- --------------------------------
*  Incorporated by reference to the same numbered exhibit filed with the
Company's Registration Statement on Form S-1 No. 33-93460.
**  Incorporated by reference to the same numbered exhibit filed with the
Company's Form 10-K for the year ended December 31, 1995.
***  Incorporated by reference to the same numbered exhibit filed with the 
Company's Form 10-Q for the quarter ended March 31, 1996.
**** Incorporated by reference to the same numbered exhibit filed with the 
Company's Form 10-Q for the quarter ended June 30, 1996.
 + Confidential treatment granted.
++ Confidential treatment requested.

      (b)    Reports on Form 8-K

             None


                                         -10-

<PAGE>

                                      SIGNATURES


      Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned, thereunto duly authorized.


                                       PHARMACOPEIA, INC.


                                       By:   /s/ Lewis J. Shuster
                                             -----------------------------------
                                             Lewis J. Shuster
                                             Chief Financial Officer
                                             (Duly Authorized Officer and 
                                               Chief Accounting Officer)

                                       Date:  November 12, 1996



                                         -11-
<PAGE>

                              PHARMACOPEIA, INC.
                              INDEX TO EXHIBITS


EXHIBIT NUMBER     EXHIBIT NAME                                           PAGE

    10.32          Employment Agreement, dated June 20, 1996,
                   between the Company and Stephen A. Spearman, Ph.D.

    10.33          Lease Agreement, dated June 21, 1996, between
                   Pharmacopeia and South Brunswick Rental I, Ltd.

    27.1           Financial Data Schedule


                                     -12-


<PAGE>

                                                                   EXHIBIT 10.32

[LETTERHEAD]


VIA FEDEX
- ---------

June 20, 1996



Stephen A. Spearman, Ph.D.
17 Homewood Drive
Morristown, NJ 07960

Dear Steve:

It was a pleasure to meet with you during your visits to our company.  Everyone
at Pharmacopeia who met with you was greatly impressed with your skills, and I
believe that our company will provide a highly stimulating environment for your
personal growth.  It gives me great pleasure to set forth the principal terms of
an offer for you to join Pharmacopeia, Inc.

POSITION:           Exec. Vice President, Operations.

REPORTING:          You will report to the Chief Executive Officer.

RESPONSIBILITIES:   You will be responsible for directing and optimizing the
                    operations of the corporation based on goals and objectives
                    established by the Chief Executive Officer.  This will
                    include staffing, establishing operating policies and
                    procedures and evaluating operation results.

COMPENSATION:       Your monthly base compensation will be $18,750.00 per month,
                    effective with your start date.  Thereafter, your salary
                    will be based on your performance and consistent with salary
                    policy of Pharmacopeia, Inc.

EQUITY:             Subject to approval by our Board of Directors, you will be
                    granted options to purchase 50,000 shares of Pharmacopeia
                    Common Stock at a purchase price equal to the fair market
                    value of such shares on the date of Board approval, this
                    date being the next Board meeting after your start date.
                    These options will vest monthly over a four-year period at
                    the rate of one quarter (1/4) of such shares at the end of
                    the first year and one forty-eighth (1/48) of such shares
                    each month thereafter.

PERFORMANCE         Target of 20% of annual base salary, based upon a
BASED INCENTIVE     predetermined set of objectives, as determined by the
COMPENSATION        Board of Directors in its sole discretion.  Your
(BONUS):            incentive compensation will be based on Company and your
                    performance.

SIGNING BONUS       You will receive a one-time signing bonus of $25,000 (less
                    appropriate taxes) payable on the first paydate following
                    your initiation of employment.

BENEFITS:           You will be entitled to receive Pharmacopeia's standard
                    benefits package as described in the attached summary.  You
                    will also receive additional time off with pay until
                    vacation reaches 20 days per year (after 10 years of
                    service).

TEMPORARY LIVING:   The Company will reimburse you for reasonable temporary
                    living expenses that exceed normal costs and are a direct
                    result of your move.  Such expenses will be covered for up
                    to 180 days and may include:

<PAGE>

Stephen A. Spearman, Ph.D.
Page 2
June 20, 1996


                    -  Cost of lodging
                    -  Meals
                    -  Telephone

RELOCATION:         The Company will reimburse you for your documented and
                    reasonable relocation expenses, incurred within one year of
                    the starting date of employment, including selling expenses,
                    new house acquisition expenses, moving expenses and
                    incidental expenses related to your relocation.  (See
                    attachment for listing of normally covered items).

TAX ALLOWANCE:      The IRS considers certain reimbursements of relocation and
                    temporary living expenses as taxable income.  If these items
                    are not classified as being deductible, the Company will
                    provide a "tax gross-up allowance" to assist in payment of
                    federal and state income tax liabilities.  On such
                    reimbursements, the Company is required to withhold tax at
                    the time of payment.

EQUITY LOAN:        An equity loan will be made available for the down payment
                    on your new home to the extent of the equity in your present
                    home. Repayment of the loan, which is interest free, must be
                    paid within 15 days of the earliest of the following:

                    -  sale of your old residential property
                    -  termination of your employment with the Company

AT-WILL             Your employment will be at will, which means it may be
EMPLOYMENT:         terminated at any time by you or the Company.

SEVERANCE           In the event you are terminated without Cause within twelve
                    months of the date you commence employment, the Company will
                    pay your base salary for twelve months after the date of
                    such termination; and, in the event you are terminated after
                    twelve months but within twenty-four months of the date you
                    commence employment, the Company will pay your base salary
                    for the balance of such second twelve month period (e.g., if
                    you are terminated in month thirteen, the Company will pay
                    your salary for eleven months; if you are terminated in
                    month fourteen, the Company will pay your salary for ten
                    months, etc.), provided in any case, that the Company's
                    obligation to continue to pay such salary shall cease as of
                    the date you commence full-time employment with another
                    business entity.  For the purpose of this agreement, "Cause"
                    shall mean the occurrence of any of the following: (a) any
                    intentional action or intentional failure to act by you
                    which was performed in bad faith and to the material
                    detriment of the Company; (b) you refuse to follow the
                    directives of the Chief Executive Officer or Board of
                    Directors; or (c) you are convicted or plead NOLO CONTENDERE
                    to a felony crime involving moral turpitude; provided that;
                    in the event that any of the foregoing events is capable of
                    being cured, the Company shall provide written notice to you
                    describing the nature of such event and you shall thereafter
                    have fifteen (15) days to cure such event.  In the event
                    your employment is terminated by the Company with Cause, or
                    is terminated by the Company after twenty-four months from
                    the date you commence employment, or is terminated
                    voluntarily by you, you shall not be entitled to any
                    severance compensation.

<PAGE>

Stephen A. Spearman, Ph.D.
Page 3
June 20, 1996


START DATE:         August 12, 1996 or another mutually agreed upon date.

The Immigration Reform and Control Act makes it unlawful for an employer to hire
an individual who is not authorized to work in the United States.  You will,
therefore, be required to present documentation on your first day to prove your
employment authorization and identity.  Attached is a copy of the required form
(I-9) and a list of acceptable documents so you can be prepared to provide
documentation on your first day of employment.

Additionally, you will be required to sign a Proprietary Information and
Business Ethics Agreement when you report for work.  A copy of the agreement is
attached for your review.

As is customary, this offer is contingent upon completion of a background check
and passing a test for the presence of drugs, including marijuana, in your
system.  A positive test for drugs, other than those prescribed for you by your
physician, will constitute grounds for withdrawing our offer.  This test for
drugs may be completed prior to or at your start date.  Please contact Eileen
Pagnutti-Kish at (609) 452-3640 as soon as possible to schedule this drug
screen.

At the same time the drug screen is completed, you will be given a physical
examination.  Your job offer, however, will not be subject to withdrawal based
on the results of this examination, unless it reveals that you are unable to
perform the essential functions of the job at issue without reasonable
accommodation.

We at Pharmacopeia believe we are well along in the process of assembling a
world class team to implement our broad and deep technology portfolio, with the
expectation of being a state-of-the-art company focused on combinatorial
chemical libraries and their use in defining developable bioactive molecules.  I
hope you will decide to join us in building this exciting company.

If you have any questions or need additional information, please call me at
(609) 452-3637.

Steve, we would like you to join Pharmacopeia.  Please indicate your acceptance
by signing and returning one copy of this offer and application for employment
in the enclosed Fedex envelope no later than July 3, 1996.

                                        Sincerely,



                                        /s/ Joe

                                        Joseph A. Mollica, Ph.D.
                                        Chairman and Chief Executive Officer

SIGNED AND AGREED BY:


/s/ Stephen A. Spearman
- ------------------------------
     June 24, 1996
- ------------------------------
Date

<PAGE>

                                                                   EXHIBIT 10.33


                                      LEASE

                              ARTICLE I.   PARTIES

          101.  THIS LEASE, made this _______ day of JUNE, 1996 by and between
SOUTH BRUNSWICK RENTAL I, LTD., a New Jersey Limited Partnership (hereinafter
called "LANDLORD") and PHARMACOPEIA, INC. (hereinafter called "TENANT").

                         ARTICLE II.   DEMISED PREMISES

          201.  Landlord leases to Tenant and Tenant leases from Landlord all
that certain piece or parcel of land, together with the buildings and
improvements thereon, hereinafter collectively referred to as the "DEMISED
PREMISES" or "LEASED PREMISES" or "PREMISES", known as 2000 Princeton Park
Corporate Center and situate at 2000 Cornwall Road, South Brunswick Township,
Middlesex County, New Jersey (hereinafter called "LAND"), which Land is
described in EXHIBIT "A" attached hereto, and which space contains in the
aggregate approximately 86,000 square feet of rentable area on the first and
only floor of the building (hereinafter called the "BUILDING").  

                               ARTICLE III.   USE

          301.  Tenant shall use and occupy the Demised Premises solely for
office, manufacturing, and laboratory facilities and for any other lawful use,
all to be in conformance with Code and Ordinance, and for no other purpose. 

                        ARTICLE IV.   TERM AND POSSESSION

          401.  The term of this lease shall begin on the 1st day of April 1997
(the "COMMENCEMENT DATE") and end at midnight on March 31, 2000 ("EXPIRATION
DATE").  

          402.  Tenant represents that the Premises, the street or streets,
sidewalks, parking areas, curbs and access ways adjoining them, any surface and
subsurface conditions thereof, and the present uses and non use thereof, have
been examined by Tenant, and Tenant accepts them in the condition or state in
which they now are, or any of them now is, without representation, covenant or
warranty, express or implied, in fact or in law, by Landlord and without
recourse to Landlord, the nature, condition or usability thereof or the use or
uses to which the Premises or any part thereof may be put. 
     
          403.  During the term hereof, Landlord may exercise all Landlord's
powers, authorities, remedies and benefits and shall perform all its
obligations, and Tenant may exercise all Tenant's powers, authorities, remedies,
and benefits and shall perform all obligations of

<PAGE>

Tenant.

          404.  Tenant is, as of the date of this Lease, a subtenant of the
current tenant, ENICHEM AMERICA, INC. (hereinafter "ENICHEM"), and in occupancy
of substantial portions of the Premises, and from time to time prior to the
Commencement Date of this Lease may take occupancy of additional portions of the
Premises as the same are made available to Tenant by Enichem.  Tenant
acknowledges that it has inspected the Demised Premises and same are in good and
tenantable condition.  Landlord is under no duty to make repairs or alterations
at the time of leasing or at any time thereafter unless specifically set forth
in this lease. 

                                ARTICLE V. RENT

          501.  Tenant shall pay to Landlord as minimum rent the sum of ONE
MILLION SEVEN HUNDRED TWENTY THOUSAND DOLLARS ($1,720,000) per year in equal
monthly installments in advance of ONE HUNDRED FORTY-THREE THOUSAND THREE
HUNDRED THIRTY-THREE DOLLARS ($143,333) each.  The first monthly installment of
minimum rent shall be paid by Tenant to Landlord on the Commencement Date and
thereafter on the first day of each calendar month.  In the event the lease term
shall commence at any time other than the first day of a calendar month, the
rental payment shall be pro rated for said month on a per diem basis.  In the
event rental payments have not been received within 15 days from the date the
monthly rental payments are due, in addition to any and all remedies available
to Landlord under this Lease, Tenant shall be charged and shall pay, in addition
to the outstanding rental payments, interest on the delinquent sum at the rate
of prime plus 2% which prime shall be the "prime" or "base"  in effect for The
Bank of New York.  This charge shall not preclude or be deemed a waiver of
Landlord's rights under Article XX of this Lease. 

          502.  In addition to the minimum rent referred to above, Tenant shall
pay, as Additional Rent, Real Estate Taxes as set forth below:

                (a)  For each year or part of a year occurring within the Term,
Tenant shall  pay directly to applicable taxing authorities all real estate
taxes, assessments (subject to Section 502(h) below), water and sewer rents,
rates and charges (the "REAL ESTATE TAXES") which shall be levied, imposed or
assessed upon the Real Property, which shall be paid on or before the date that
any fine, penalty, interest or cost may be added thereto for non-payment
thereof.  Tenant shall produce receipts to Landlord evidencing Tenant's timely
payment of Real Estate Taxes.  Landlord shall, promptly after receipt thereof by
Landlord, forward all tax bills to Tenant.  

                (b)  Tenant may take the benefit of the provision of any statute
or ordinance permitting any Real Estate Tax to be paid over a period of time but
if Tenant elects to do so, Tenant shall nevertheless pay all unpaid installments
prior to the expiration or sooner termination of this Lease, whether or not such
installments are then due.

                (c)  In the event the Real Estate Taxes have not been finally
determined by


                                       -2-

<PAGE>

legal proceedings or otherwise at the time of payment of Real Estate Taxes for
any subsequent year, the actual amount of Real Estate Taxes billed to Landlord
shall be used to calculate such taxes.   Upon a final determination of the Real
Estate Taxes by legal proceedings or otherwise, Landlord shall deliver to Tenant
a statement setting forth the amount of Real Estate Taxes as finally determined
and showing the computation of any adjustment due by reason thereof.  Any
payment due to Landlord or any credit due to Tenant by reason of such adjustment
shall be made as provided herein.  

                (d)  If Landlord shall receive any tax refund in respect of any
tax year for Real Estate Taxes which are Tenant's obligation and which have been
paid by Tenant, Landlord shall deduct from such tax refund any expenses incurred
in obtaining such tax refund, and the remaining balance of such tax refund shall
be reimbursed by Landlord directly to the Tenant by check within 30 days.  Any
reasonable expenses incurred by Landlord in contesting the validity or the
amount of the assessed valuation of the Real Property or of any Real Estate
Taxes for any year, to the extent not offset by a tax refund, shall be included
as an item of Real Estate Taxes for the tax year in which such contest shall be
finally determined for the purpose of computing the Additional Rent due Landlord
or any payment due to Tenant hereunder.  

                (e)  If the tax year for Real Estate Taxes shall be changed,
then an appropriate adjustment shall be made in the computation of the
Additional Rent due to Landlord or any credit due to Tenant, in accordance with
sound accounting principles to effectuate the changeover to any new tax year
adopted by any taxing authority.  Landlord shall give Tenant written notice of
any increase in Real Estate Taxes or assessments within 30 days after Landlord's
receipt of notice of such increase, but in any event prior to the date of the
running of any appeal period.  "REAL ESTATE TAXES" as set forth in this Section
502 shall mean those taxes attributable to the Real Property, provided that, if
because of any change in the method of taxation of real estate, any other tax or
assessment is imposed upon Landlord or the owner of the Land or the Building or
both or upon or with respect to the Land or the Building or both or the rents or
income therefrom in substitution for or in lieu of any tax or assessment which
would otherwise be a Real Estate Tax, such other tax or assessment shall be
deemed Real Estate Taxes for the purposes herein.  

                (f)  If the last year of the Term ends on any day other than the
last day of a tax year, any payment due to Landlord or credit due to Tenant by
reason of any increase in Real Estate Taxes shall be prorated and Tenant
covenants to pay any amount due to Landlord within 30 days after being billed
therefor and Landlord covenants to credit any amount due to Tenant, as the case
may be.  These covenants shall survive the expiration or termination of this
Lease.

                (g)  Tenant shall have the right within 30 days after notice
from Landlord to either request Landlord to appeal any increased assessment
resulting in any increase in Real Estate Taxes or to undertake the appeal
pursuant to the following provisions.  Tenant shall have this right provided it
is not then in default under the lease and continues to conform and abide by any
and all provisions then in effect which must be fulfilled in order to allow for
such appeal


                                       -3-

<PAGE>

including but not limited to the payment of any and all taxes which said taxing
authority requires to be paid within the time frame so specified, and provided
further that Tenant escrows with Landlord (or if required by Landlord's
Mortgagee, with such Mortgagee) an amount equal to the tax in dispute.  Tenant
agrees should it so request Landlord in writing to file said appeal on Tenant's
behalf or if Tenant elects to undertake directly this appeal on its own behalf
to indemnify and hold Landlord harmless as well as any assignee or nominee of
Landlord, its mortgagee or any other person or entity against any and all costs
including but not limited to any further increases in the assessment in the
event that said taxing authority should elect, on any appeal by Tenant or by
Landlord at Tenant's request, if allowed by law, to cross appeal on its own
behalf said assessment and should be successful in further increasing the
assessment and/or other tax rate.  Landlord agrees it will not appeal any
increased tax assessment without Tenant's consent, which will not be
unreasonably withheld, except no such consent of Tenant shall be required during
the final year of the Lease term.  

                (h)  Anything herein to the contrary notwithstanding, if any
special assessments are levied against the Premises, Tenant shall be responsible
only for its proportional costs on a pro rata basis relating to the extent of
the Lease term over the total useful life of the improvements which are the
basis of such assessment.  However, if such assessment was made by a reason of a
condition which has been created by, or at the instance of Tenant, or is
attributable to the use or manner of use to which Tenant puts the Premises, or
is attributable to a breach by Tenant of any of its covenants and agreements in
this Lease, Tenant shall be responsible for the entire assessment.  

          503.  It should be understood that this Lease is to be considered a
"NET LEASE" and that, except as otherwise expressly provided in this Lease,  the
Tenant shall pay all utilities and expenses incurred in the operation and
maintenance of the Building and incurred in the operation or maintenance of the
entire Premises.  Notwithstanding the foregoing or Section 402 above, it is
understood and agreed that Landlord shall be responsible for repairs of any
structural defects or latent defects to the roof, walls and foundations of the
Building, unless such defects are caused by Tenant's use and occupancy of the
Premises.  If any such structural defects or latent defects render the Premises
untenantable, and Landlord fails to make the repairs within 30 days after
written notice to Tenant, Tenant shall have the option to make such repairs or
replacements at its own cost and expense, and if Tenant obtains a final, non-
appealable judgment in a court of competent jurisdiction that Landlord was
obligated to make such repairs, Tenant shall be entitled to recover from
Landlord (and offset against rent) the amount expended by Tenant, plus interest
at the rate specified in Section 501, and reasonable attorneys' fees.  Unless
and until Tenant obtains such a final, non-appealable judgment, it shall
continue to pay all rent, without offset, and Tenant's sole recourse, if such a
judgment is obtained against Landlord shall be against Landlord or against
future rents during the term of the Lease.

                Tenant confirms that (a) the existing Building is acceptable for
Tenant's intended use, (b) the current condition of the Building, roof, walls
and foundation are acceptable, except that certain decorative slate panels glued
to the exterior facade of the Building have fallen


                                       -4-

<PAGE>

off in the past, and (c) Tenant has no knowledge of any structural defects.


                During each calendar year of the Lease term, or extended term,
if applicable, pro rata for any period less than a year, Tenant shall pay
Landlord, as Additional Rent, promptly upon being billed, a sum equal to the
Operating Expenses of the entire Premises for such calendar year which have not
otherwise been paid directly by Tenant.  "OPERATING EXPENSES" as referred to in
this lease means the following expenses, costs and charges incurred for the
operation, maintenance and repair of the Land and Building:

                (a)  Cost of all insurance carried by Landlord, provided
premiums for insurance against loss or damage to the Building shall not exceed
SEVENTY-TWO THOUSAND DOLLARS ($72,000) per year during the initial term of this
Lease.  However, Tenant shall be responsible for any and all increase in
premiums caused by its occupancy and use of the Demised or Leased Premises,
including without limitation increases caused by any alterations or improvements
installed by Tenant, Tenant's breach of this Lease, or any other act or omission
of Tenant;

                (b)  Landlord's management fees equal to 5% of minimum rent,
which Tenant shall pay directly to the management company, if so directed by
Landlord;

                (c)  Cleaning, garbage removal, landscaping and grounds
maintenance, and any other maintenance charges reasonable required in the
operation of a building of this type that are requested to be performed by
Landlord, or which Landlord elects to perform after written notice to Tenant
that Tenant has failed to maintain the Premises as required by this Lease.   

                All expenses to be taken into account pursuant to this Section
shall be "net" only and for such purpose shall be deemed reduced by the amounts
of any insurance or other reimbursement, recoupment, payment, discount, credit
reduction or allowance received by Landlord in connection with such expenses. 

                On account of the Additional Rent payable pursuant to this
Section 503, Tenant shall pay to Landlord on the first day of each month during
the term hereof in advance 1/12th of the amount Landlord estimates will be due
to Landlord hereunder for the current year.  Not later than May 1 of each year
of this Lease, Landlord shall render a bill to Tenant, with appropriate
documentation, for such Additional Rent, together with a statement in reasonable
detail of the Operating Expenses, together with particular invoices, if
requested by Tenant and if available to Landlord, and within 60 days after the
rendering of such billing and statement, Tenant will pay any additional amount
shown to be due by said statement, or Landlord will credit any overpayment by
Tenant against payments thereafter to become due by Tenant pursuant to this
section and the other provisions of this Lease.  If the credit exceeds one
month's rent, and provided Tenant is not then in default, Landlord will
reimburse Tenant by check within 60 days.  

          504.  All sums payable under this Lease by Tenant, or which are at the
expense


                                       -5-

<PAGE>

of Tenant, are deemed and considered to be rent, and if not paid, Landlord shall
have with respect thereto all the rights and remedies provided for herein and by
law for the nonpayment of rent.

          505.  Rent and all sums payable hereunder by Tenant to Landlord shall
be paid without notice or demand, and without deduction (except as expressly
provided in the Lease), in then legal tender of the United States of America for
the payment off public and private debts by wire transfer of immediately
available funds to SOUTH BRUNSWICK RENTAL I, LTD., Account No. 090-2051717, Bank
of New York, ABA No. 021-000-018, or to such other person or place or in such
other manner as Landlord shall from time to time designate by written notice to
Tenant. The management fee referred to in Section 503(b) shall be paid to the
Landlord's management company, as Landlord shall direct.   

                 ARTICLE VI.  MISCELLANEOUS COVENANTS OF TENANT

          601.  Tenant shall

                (a)  pay the rent, Additional Rent, and all sums due under this
Lease without notice or demand on the days and times and at the places that the
same are payable and without abatement, deduction or set-off except as expressly
set forth in this Lease;  it being understood and agreed that this is to be a
net, net lease and except for any expenses or items enumerated as expenses of
the Landlord hereunder, such items shall be solely the responsibility of the
Tenant.

                (b)  keep the Demised Premises in good order and repair,
reasonable wear and tear and damage by any casualty not occurring through act of
Tenant or Tenant's agents, employees, or invitees excepted, and unless paid by
insurance on demand pay Landlord as additional rent, the cost of repair or
restoration of the Demised Premises.  If the Building or Premises or any part
thereof is damaged in whole or in part by the act of Tenant or Tenant's agents,
employees or invitees, Landlord may at its option require Tenant to make the
appropriate repairs.

                (c)  peaceably deliver up and surrender possession of the
Demised Premises at the expiration or sooner termination of this Lease, in the
same condition in which Tenant has agreed to keep the same during the
continuance of this Lease, broom clean, and at such time without demand or delay
deliver to Landlord or its agent all keys for the Demised Premises, and upon
failure to deliver possession as aforesaid to pay to Landlord, at the beginning
of each month, an amount which shall be computed by applying, for the period
Tenant remains in possession thereafter, 150% of the sum of the highest minimum
annual rental rate and 100% of all additional rent under this Lease;

                (d)  except for the obligations of Landlord under Paragraphs 503
of this Lease, promptly correct any violation of, and comply with, all laws,
ordinances, notices, permits, or statements of occupancy, requirements, orders
and regulations, now or hereafter in effect and


                                       -6-

<PAGE>

of whatever nature of any and all the Federal, State, County, Municipal and/or
other authorities and of the Board of Fire Underwriters and any insurance
organizations of associations, and/or companies, with respect to Tenant's
conduct or use of the Demised Premises, and on demand, pay to Landlord, as
additional rent, any and all increases in premiums on insurance (hazard and
liability) now or hereafter carried by Landlord on the Demised Premises, land or
building, which increases are caused in any way by the occupancy of Tenant or by
breach of any of the provisions of this lease;

                (e)  use every reasonable precaution against fire or other
casualty;

                (f)  give to Landlord prompt written notice of any accident,
fire, casualty or damage occurring on or to the Demised Premises, and of any
defects in the apparatus in the Demised Premises;

                (g)  repair or replace all electric lamps, lights, bulbs, glass
windows or fixture in the Demised Premises, as from time to time shall be
necessary;

                (h)  within ten days after written request therefore by
Landlord, deliver to Landlord in recordable form a certificate to such person as
Landlord may designate certifying (if such be the case) that this Lease be in
full force and effect, reflecting the commencement and expiration dates of the
Lease, and that there are no alleged defaults by Landlord or set-offs by Tenant
hereunder (or stating those claims by Tenant) and the date to which rent is
paid, both minimum and additional, and any other matter as Landlord may
reasonably request;

                (i)  omitted;

                (j)  1.   At Tenant's expense, Tenant shall comply with all laws
and ordinances, and all rules, orders and regulations of all governmental
authorities and of all insurance bodies, at any time duly issued or in force,
applicable to the Premises or any part thereof or to Tenant's use thereof,
except that Tenant shall not hereby be under any obligation to comply with any
law, ordinance, order or regulation requiring any structural alteration of or in
connection with the Premises, unless such alterations are required by reason of
a condition which has been created by, or at the instance of, Tenant, or is
attributable to the use or manner of use to which Tenant puts the Premises, or
is required by reason of a breach of any of Tenant's covenants and agreements
hereunder.  Where any structural alteration of or in connection with the
Premises is required by any such law, ordinance, rule, order or regulation, and,
by reason of the express exception hereinabove contained, Tenant is not under
any obligation to make such alteration, then Landlord shall have the option of
making such alteration and paying the cost thereof.  

                     2.   Tenant agrees that it shall, at its sole cost and
expense, fulfill, observe and comply with all of the terms and provisions of the
New Jersey Industrial Site Recovery Act, N.J.S.A. 13:1K-6 et seq., as the same
may be amended from time to time and all rules, regulation, ordinances, opinion,
orders and directives issued or promulgated pursuant to or in connection with
said Act by the Department of Environmental Protection ("DEP"), or any 


                                       -7-

<PAGE>

subdivision or bureau thereof or any other governmental or quasi-governmental
agency, authority or body having jurisdiction.  (Said Act and all of said rules,
regulations, ordinances, opinions, orders and directives are hereinafter in this
Article collectively referred to as "ISRA".)  Without limiting the foregoing,
Tenant agrees that it shall provide DEP with a General Information Submission as
required under ISRA and a Site Evaluation Submission as required by ISRA and by
the DEP.  

                     3.   Without limiting the foregoing, upon the Landlord's
written request therefor, and in all events no later than 60 days prior to
"closing, terminating or transferring operations" (as said term is defined in
ISRA) at all or any portion of the Premises, Tenant, at its sole cost and
expense, shall provide Landlord with a true copy of:

                            (i)   letter of non-applicability from DEP (or such
other agency or body as shall then have jurisdiction over ISRA matters), stating
that ISRA does not then apply to Tenant, Tenant's use and occupancy of the
Premises and said closing, terminating or transferring of operations; or

                           (ii)   a Negative Declaration (as said term is
defined in ISRA) duly approved by DEP or such other agency or body as shall then
have jurisdiction over ISRA matters; or

                          (iii)   a Cleanup plan (as said term is defined in
ISRA) duly approved by DEP or such other agency or body as shall then have
jurisdiction over ISRA matters; or

                           (iv)   any and all supporting documents and
affidavits involved in obtaining (i), (ii) or (iii).

                Nothing in this Paragraph 3 shall be construed as limiting
Tenant's obligation to otherwise comply with ISRA.

                     4.   In the event Tenant complies with Paragraph 3 above,
by obtaining an approved Cleanup Plan, Tenant agrees that it shall, at its sole
cost and expense:

                            (i)   post any financial guarantee or other bond
required by DEP (or such other agency or body as shall have jurisdiction over
the Cleanup Plan) to secure implementation and completion of said Cleanup Plan;
and

                           (ii)   provide any stand-by trust required by DEP;
and

                          (iii)   promptly implement and prosecute to completion
said Cleanup Plan, in accordance with the schedules contained in said Cleanup
Plan or as may be otherwise ordered or directed by DEP or such other agency or
body as shall then have jurisdiction


                                       -8-

<PAGE>

over said Cleanup Plan.  Tenant expressly understands and acknowledges that
Tenant's compliance with the provisions of this paragraph may require Tenant to
expend funds or do acts after the expiration or termination of the term of this
Lease.  Tenant agrees that it shall expend such funds and do such acts and
Tenant shall not be excused therefrom even though the term of this Lease shall
have previously expired or been terminated.

                     5.   Within ten days after written request by the Landlord
which request by Landlord will not be exercised in an unreasonable manner or any
mortgagee or Landlord Tenant shall deliver to Landlord or Landlord's mortgagee
or ground lessor, as the case may be, a duly executed and acknowledged affidavit
of Tenant's chief executive officer certifying:

                            (i)   the proper four digit Standard Industrial
Classification number relating to Tenant's then current use or uses of the
Premises (said Standard Industrial Classification number to be obtained by
reference to the then current Standard Industrial Classification Manual prepared
and published by the Executive Office of the President, Office of Management and
Budget or the successor to such publication); and

                           (ii)   (a)  if the facts so warrant, that Tenant's
then current use or uses of the Premises does not involve the generation,
manufacture, refining, transportation, treatment, storage, handling or disposal
of hazardous substances or wastes (as hazardous substances and hazardous wastes
are defined in ISRA) on site, above ground or below ground (all of the foregoing
being hereinafter collectively referred to as the "PRESENCE OF HAZARDOUS
SUBSTANCES"), or

                                  (b)  that if Tenant's then present use or uses
of the Premises does involve the Presence of Hazardous Substances, said
affidavit shall describe in detail that portion of Tenant's operations which
involve the Presence of Hazardous Substances.  Said description shall, INTER
ALIA, identify each hazardous substance and describe the manner in which it is
generated, handled, manufactured, refined, transported, treated, stored and/or
disposed of.  Tenant shall supply Landlord or Landlord's mortgagee with such
additional information relating to said Presence of Hazardous Substances as
Landlord or Landlord's mortgagee may reasonably request, which request will not
require Tenant to reveal any trade secrets unless such information is a
requirement of local, state or federal law or reasonably necessary for the
preservation of the Building and/or Tenants contained therein, their employees,
servants, agents and invitees.  If any trade secrets are required to be
disclosed Landlord agrees not to disclose same unless required by law.  Tenant
shall furnish Landlord and Landlord's Mortgagee with copies of all notices and
reports to and from DEP regarding Tenant's use or uses or otherwise pertaining
to the Premises.  

                     6.  Without limiting the foregoing, Tenant agrees:

                            (i)   at its sole cost and expense, to promptly
discharge and remove any lien or other encumbrance arising out of ISRA and
Tenant's failure to comply


                                       -9-

<PAGE>

with this Section against the Premises or any other property owned or controlled
in whole or in part by Landlord; and

                           (ii)   to indemnify and hold Landlord harmless from
and against any and all liability, penalties, losses, expenses, damages, costs,
claims, causes of action, judgments and/or the like, of whatever nature,
including but not limited to reasonable fees and other costs of litigation or
preparation therefor, arising out of or in connection with and to the extent of
Tenant's failure or inability, for any reason whatsoever to observe or comply
with ISRA and/or the provisions of this Section.

                     7.     (i)   Notwithstanding anything in this Lease to the
contrary, and without limiting the foregoing provisions of this Section, Tenant
agrees that it shall, at its sole cost and expense, observe, comply and fulfill
all of the terms and provisions of the Spill Compensation and Control Act,
N.J.S.A. 58:10-23.11 ET SEQ., as the same may be amended from time to time and
all rules, regulations, ordinances, opinions, orders and directives issued or
promulgated pursuant to or in connection with said Act by DEP, any subdivision
or bureau thereof or any other governmental or quasi-governmental agency or body
having jurisdiction.  (Said Act and all of said rules, regulations, ordinances,
opinions, orders and directives are hereinafter in this Article collectively
referred to as "SPILL ACT".)

                           (ii)   Without limiting the foregoing, Tenant agrees:

                               (a)  that it shall not do or omit to do nor
suffer the commission or omission of any act, the commission or omission of
which is prohibited by or may result in liability under the Spill Act, including
without limitation, the discharge of petroleum products or other hazardous
substances (as said terms are defined in the Spill Act); and

                               (b)  whenever the Spill Act requires the "owner
or operator" to do any act, Tenant shall do such act at its sole cost and
expense, it being the intention of the parties hereto that Landlord shall be
free of all expenses and obligations arising from or in connection with
compliance with the Spill Act and that Tenant shall fulfill all such obligations
and pay all such expenses.

                          (iii)   Without limiting the foregoing, Tenant agrees:

                               (a)  at its own cost and expense, promptly
discharge and remove any lien or other encumbrance arising out of the Spill Act
and Tenant's failure (provided there is no failure on the part of any other
party previously occupying the Land and or Building) to comply with this Section
against the Demised or Leased Premises or any other property owned or
controlled, in whole or in part, by Landlord; and

                               (b)  to indemnify and hold Landlord harmless from
and against any and all liability, penalties, losses, expenses, damages, costs,
claims, causes of action,


                                      -10-

<PAGE>

judgments and/or the like, or whatever nature, including but not limited to
reasonable attorneys' fees and other costs of litigation or preparation
therefor, arising out of or in connection with Tenant's failure or inability,
for any reason whatsoever, to observe or comply with the Spill Act and/or the
provisions of this Section, unless Tenant's inability to so comply is caused by
Landlord or by prior tenants of the Premises.  

                     8.   Tenant covenants and agrees that Tenant shall in each
and every sublease that Tenant enters into for a portion of or all of the
premises include a provision in substantially the same form as this Paragraph
"j" but in any event specifically including a provision that the subtenant shall
comply with both ISRA and the Spill Act and shall indemnify and hold Landlord
harmless from and against any and all liabilities, penalties, losses, expenses,
damages, costs, claims, causes of action, judgments and/or the like of whatever
nature including, but not limited to, reasonable attorneys' fees and other costs
of litigation or preparation therefor arising out of or in connection with and
to the extent of Subtenant's failure or inability for any reason whatsoever to
observe or comply with either ISRA or the Spill Act and/or the provisions of
this section of the Sublease as is called for in this paragraph.  Tenant further
covenants and agrees that whenever it is required in this Paragraph "j" to give
information or take action in regard to the use or uses of the Premises, Tenant
shall include therein the use or uses of any subtenant.

                     9.   Without limiting the foregoing provisions of this
Section 601(j), Tenant agrees that it shall, at its cost and expense, promptly
comply with all federal, state and local laws, ordinances, rules, regulations
and requirements relating to air, ground and water pollution and protection
and/or preservation of the environment.  

                     10.  Tenant shall copy Landlord on all documents sent or
received by Tenant to DEP or an subdivision or bureau thereof or any other
governmental or quasi-governmental agency, authority or body having jurisdiction
over ISRA or the Spill Act or otherwise, relative to compliance with this
Section 601(j).

                     11.  Tenant agrees that each and every provision of this
Section 601(j) shall survive the expiration or earlier termination of the term
of this Lease, the parties hereto expressly agreeing and acknowledging that
Landlord would not enter into this Lease but for the provisions of this Section
601(j) and the aforesaid survival thereof.

                     12.  Landlord and Tenant hereby agree that Tenant's
obligations pursuant to this Section 601(j) shall be with respect to Tenant's
occupancy of the Demised or Leased Premises (including periods of occupancy by
Tenant prior to the Commencement Date) and not otherwise.  During the term of
this Lease and at its termination, to the extent that the Tenant may be subject
to ISRA and the Spill Act and/or any other statute relating to the analysis of
or remediation of environmental conditions at the site, the levels of
contamination (if any)  which were found on the site at the time this Lease was
entered into shall be Landlord's responsibility, except that as to any space in
the Premises occupied by Tenant prior to the


                                      -11-

<PAGE>

Commencement Date (whether as subtenant of Enichem or otherwise) Tenant shall be
responsible for all conditions arising from and after the date on which Tenant
took occupancy of the space and which were caused by Tenant's use and occupancy.
Tenant agrees that any Negative Declaration or Certificate of Non-Applicability
obtained by Enichem under ISRA shall constitute confirmation that any future
environmental problem was not caused by and is not attributable to the actions
of the prior tenant, provided that Tenant shall not be bound by any false
representations made by Enichem in connection with any applications or
submissions made by Enichem to DEP.

          602.  Without the express prior written consent and approval of the
Landlord, which consent will not be unreasonably withheld, Tenant, its agents,
employees or invitees or (when permitted) its assignees or sub-tenants shall
not, except as permitted under Article III hereof do any of the following:

                (a)  occupy the Demised Premises in any manner or for any
purpose except as permitted in this Lease;

                (b)  if Tenant is a corporation, merge with another entity or
liquidate or dissolve, or permit or allow control of said corporation to change
or be affected by the transfer of its stock except by reason of death of a
shareholder or shareholders or trading of its stock on a recognized public stock
exchange, unless the merger or other action results in the surviving entity
being at least as creditworthy as Tenant (after adjusting for any net loss carry
forward).  Creditworthiness shall be tested by reference to net worth, but net
worth shall not necessarily be the exclusive test.
     
                (c)  make any alterations, improvements or additions to the
Demised Premises except as permitted and provided in Article XVI hereof;

                (d)  use or operate any machinery that, is harmful to the
Demised Premises and/or Building.

                (e)  place any weights in any portion of the Building beyond the
safe carrying capacity of the structure;

                (f)  do or suffer to be done, any act, matter or thing in
violation of the provisions of the insurance policies or whereby the said
insurance or any other insurance now in force or hereafter to be placed on the
Demised Premises, or on the Land or Building, shall become void or suspended, or
whereby the same shall be rated as a more hazardous risk than at the execution
hereof or at the time Tenant takes possession of the Demised Premises unless
Tenant agrees to pay such additional costs.

                (g)  except as is normally incident to the manufacture of
pharmaceutical products, or performance of pharmaceutical research and in
compliance with law, permit to continue any odor, noise, sound or vibration
which may, be detected outside the Building, and if


                                      -12-

<PAGE>

occurring or should there occur in isolated cases an "upset" in which event
noxious fumes may be expelled into the air, it shall be Tenant's responsibility
to immediately correct and eliminate any such emission or such incident and/or
to correct any such noise, sound or vibration.

                (h)  use or permit any of the toilet rooms, water closets,
sinks, or other apparatus or system to be used for any purpose other than for
which constructed, or permit any sweepings, rubbish, rags, ashes, chemicals, or
refuse or other unsuitable substances to be thrown or placed therein;

                (i)  place or allow to be placed any items on the outside of the
Building, on the windows, window sills or projections thereof; other than those
items that are approved in the plans and specifications;

                (j)  inscribe, paint or affix or permit to be inscribed,
painted, or affixed by any one any sign, advertisement or notice on any part of
the Building, inside or out, except within the Demised Premises. Notwithstanding
this provision, Landlord agrees, subject to compliance with applicable laws and
regulations and Landlord's approval as to the aesthetics of such, Tenant shall
have a right to place a sign on the land in front of the building, which sign
shall be maintained by Tenant at its expense.

                (k)  hang or shake any carpet, rug or other article, or throw or
drop the same or any dirt or other substance out of any window or door or down
the passageways or skylights in the Building or into or onto any common area,
adjoining Building or roof;

                (l)  except for laboratory animals, keep any animal in or about
the Demised Premises;

                (m)  except for normal and usual telephone, telegraph, and
telecommunication equipment, place any signaling, telephonic or other wires or
instruments in the Land, Building or Demised Premises except as directed by
Landlord, and without such direction no placement of any such apparatus shall be
permitted;

                (n)  enter upon the roof of the Building except to perform
routine maintenance of Building systems or Tenant's equipment on the roof, or in
an emergency affecting Tenant's operations, in which case notice may be oral.
Any maintenance to the roof shall be performed in the company of a
representative of Landlord or its managing agent;

                (o)  use electricity in the Demised Premises in excess of the
capacity of any of the electrical conductors and equipment in or otherwise
serving the Demised Premises, or add to or alter the electrical system servicing
the Demised Premises;

                (p)  use any part of the Demised Premises as sleeping rooms or
apartments;


                                      -13-

<PAGE>

                (q)  use or occupy the Demised Premises or permit or suffer the
same to be used or occupied in violation of the use regulation permit or
statement of occupancy issued for said Building or in violation of any statute,
ordinance or any requirement of any public authority, and the use permitted by
this Lease shall not be deemed a representation or guarantee by Landlord that
such use is lawful or permitted under any permit or statement of occupancy or
otherwise;

                (r)  attach any awnings, antennae or other projection to the
roof or outside walls of the Demised Premises or of the Building;

                (s)  execute or deliver any financing or security agreement or
statement that would be a lien upon the Demised Premises or the Land or
Building;

                (t)  erect, make or maintain on or attach or affix to, any part
of the Demised Premises or Building, including the windows and doors, any sign,
picture, television viewer or projection, or other representation or
advertisement or notice of any kind, which is visible from any location outside
of the Building or visible from the lobby of the Building, and no loud speaker
system or any other form of sound or audio transmission system or apparatus
shall be used in or at the Demised Premises or Building by Tenant, any sub-
tenant, or their respective agents or employees, for advertising or promotional
purposes;

                (u)  except as approved in plans and specifications or otherwise
permitted by Section 1601, lay or put upon the floors, any varnish, stain,
paint, linoleum, oil-cloth, rubber or other air-tight covering, or fasten any
articles or drill any holes, nails or screws to the walls, doors or partitions,
or paint, paper or otherwise cover the same or mark or break the same.

                   ARTICLE VII.   RIGHTS RESERVED TO LANDLORD

          701.  Provided not implemented in an unreasonable manner, or impairing
Tenant's use and enjoyment of the Demised Premises, Landlord shall have the
right, but shall be under no obligation, to do the following things (at any time
or times and from time to time) in or about the Demised Premises and the Land or
Building;

                (a)  discontinue any facility or service not expressly
covenanted for herein, as they constitute no part of the consideration for this
Lease;

                (b)  prevent access to the Building by any person during any
invasion, mob riot, public excitement or other commotion by closing the doors or
otherwise;

                (c)  without liability or responsibility to Tenant and without
diminution of, or deduction from rent, Landlord may from time to time suspend
operation of the heating, air conditioning, elevator, plumbing and electrical
systems, or any service required to be rendered to


                                      -14-

<PAGE>

Tenant under this Lease, when such suspension shall become necessary by reason
of strike, accident, emergency, or any other cause beyond Landlord's control, or
at such time as repairs, alterations, replacements or improvements thereto are
required to be made.  Landlord shall give reasonable written notice to Tenant
whenever such suspension is anticipated; 

                (d)  install, place upon or affix to the roof or exterior walls
of the Demised Premises and/or the Building, equipment, signs, displays,
antennae and any other object or structure provided it does not interfere with
Tenant's occupancy, use and enjoyment of the Premises;

                (e)  enter and go upon the Demised Premises and every part
thereof by itself or its duly authorized agents, by a master key, upon
reasonable notice during business hours and accompanied by a representative of
Tenant, and if an emergency, by telephonic notice if reasonably possible and if
not then without notice, without rendering Landlord or its agents liable or
subject to any action or prosecution therefor and without attesting the
obligations of Tenant under this Lease, for the purpose of doing any of the
following things in a manner intended not to unreasonably interfere with
Tenant's intended use of the Demised or Leased Premises:

                            (i)   inspect the Demised Premises and every part
thereof and make decorations, repairs, alterations and additions thereto and to
the Building and run wires, utility systems or appurtenance thereto and take
material as required into and upon the Demised Premises, all as Landlord shall
deem necessary for the safety, improvement, preservation or restoration of the
Building, or the Demised Premises, or for the safety or convenience of the
present or future occupants thereof;

                           (ii)   render any service to the Building or any
occupant, or exercise any of the Landlord's rights;

                          (iii)   take possession and alter, renovate and
redecorate at any time within one month prior to the expiration of this Lease if
Tenant has removed all or substantially all of Tenant's property.

                   ARTICLE VIII.   COVENANT OF QUIET ENJOYMENT

          801.  Landlord warrants that (a) it has the power and authority to
enter into this Lease, and (b) so long as Tenant performs every monetary and
material non-monetary obligation of Tenant under this Lease, Tenant shall
quietly enjoy the Demised Premises without hindrance by Landlord or anyone
claiming under the Landlord, subject however, to all of the provision of this
Lease.


                                      -15-

<PAGE>

                      ARTICLE IX.   WAIVER OF SUBROGATION, 
                 INDEMNIFICATION AND PUBLIC LIABILITY INSURANCE

          901.  Tenant shall be responsible for and shall relieve, indemnify and
save Landlord harmless from and against: (a) all liability for loss of life,
personal injury and/or damage to property occurring in or about the Demised
Premises unless caused by the gross negligence of Landlord, its agents,
servants, employees, or invitees, and (b) any loss or damage from Tenant's
failure to perform its obligations under this Lease.

          902.  Tenant shall maintain and pay for sufficient public liability
insurance to cover such indemnification in companies acceptable to Landlord,
naming Landlord, Landlord's Mortgagee and Tenant as insured, with minimum limit
of ONE MILLION DOLLARS ($1,000,000) for bodily injury or death to a single
person, and FIVE MILLION DOLLARS ($5,000,000) in respect to any one accident,
and FIFTY THOUSAND DOLLARS ($50,000) for property damage.  Tenant shall deposit
such insurance policy, policies or certificates with Landlord with endorsement
thereto that (a) the policy will not be canceled without at least ten days prior
written notice to Landlord and Landlord's Mortgagee and (b) no act or omission
of Tenant will invalidate the interest of Landlord or Landlord's Mortgagee under
said insurance.

          903.  Landlord and Tenant hereby release the other from any and all
liability or responsibility to the other or anyone claiming through or under
them by way of subrogation or otherwise for any loss or damage to property
covered by any insurance then in force, even if such loss or damage shall have
been caused by the fault or negligence of the other party, or anyone for whom
such party may be responsible, provided, however, that this release shall be
applicable and in force and effect only with respect to any loss or damage
occurring during such time as the policy or policies of insurance covering said
loss shall contain a clause or endorsement to the effect that this release shall
not adversely affect or impair said insurance or prejudice the right of the
insured to recover thereunder.  Landlord and Tenant shall each have such clause
in its fire and extended coverage insurance policies if available without extra
charge, and if there be a charge, shall notify the other party and, in such
event, shall have the clause if the other party agrees to pay such extra charge.

          904.  It shall be Landlord's responsibility to provide appropriate
property damage insurance in sufficient amounts to insure the replacement of any
items which are the responsibility of Landlord under the terms of this Lease,
the Building and any other fixtures or equipment purchased by Landlord. Landlord
shall provide to Tenant, upon request, an appropriate certificate reflecting
this coverage.  The cost of such insurance shall be an Operating Expense.  

                          ARTICLE X.   WAIVER OF CLAIMS

          1001. Unless caused by its willful or gross negligence, Landlord and
Landlord's agents, servants and employees shall not be liable for, and Tenant
hereby releases Landlord and


                                      -16-

<PAGE>

Landlord's agents, servants and employees from all claims for injury or damage
to person or loss of or damage to property (including any disappearance or theft
of property and any loss or interruption of business) sustained by Tenant, any
person claiming through Tenant, or sustained by any other person, resulting from
any fire, accident, occurrence or condition in or upon the Demised Premises,
Land and Building or streets, sidewalks, lawns, gardens, parking areas (if any)
or other areas abutting or adjacent to said Land or Building, including but not
limited to such claims for damages resulting from (i) any defect in or failure
of plumbing, heating or air conditioning equipment, elevators, electric wiring
or installation thereof, water pipes, stairs, railings or walks; (ii) any
equipment or appurtenances becoming out of repair; (iii) the bursting, leaking
or running of any tank, washstand, water closet, waste pipe, drain or any other
pipe or tank in, upon or about the Land, Building or Demised Premises; (iv) the
backing up of any sewer pipe or downspout; (v) the escape of steam or hot water;
(vi) water, snow or ice being upon or coming through the roof or any other place
upon or near such Building or premises or otherwise; (vii) the falling of any
fixture, plaster, or stucco; (viii) broken glass; (ix) any act of omission of
co-tenants or other occupants of the building or adjoining or contiguous
property or buildings; (x) the exercise of any rights by Landlord under this
Lease; (xi) any act or omission of Landlord, its agents, servants and employees,
unless said act or omission shall constitute a willful breach of law or a
willful breach of this Lease; (xii) any act or omission of parties other than
Landlord, its employees or agents.  Tenant shall indemnify and hold Landlord
harmless with regard to any damage or liability occurring on the Demised
Premises or in connection with any act or negligence of Tenant.

                           ARTICLE XI.   CONDEMNATION

          1101. Tenant hereby waives any injury, loss or damage, or claim
therefor, resulting from any exercise of a power of eminent domain affecting all
or any part of the Demised Premises or the air rights, Land or Building, except
that Tenant reserves against the condemning authority Tenant's right to, and
separate claim for, any damages for loss of good will, machinery and moving
expenses payable to tenants or lessees under the appropriate state code; in no
event, however, shall Tenant have or make any claim against Landlord, or the
condemning authority or any party having an interest in the air rights, Land or
Building, which would diminish or reduce the award for the air rights, Land or
Building.

          1102. In the event substantially all of the Demised Premises shall be
taken as a result of the exercise of a power of eminent domain, this Lease shall
terminate as of the date the right to possession vests in the condemning
authority and rent shall be apportioned as of that date.  If only a part of the
Demised Premises shall be so taken, and this Lease is not terminated by Landlord
as hereinafter provided, the rent shall be abated in proportion to the area so
taken, as of the date the right to possession vests in the condemning authority.

          1103. In the event any part of the air rights, Land or Building, shall
be taken as a result of the exercise of a power of eminent domain (whether or
not the Demised Premises shall be affected), Landlord may, and Tenant may, if
such taking shall materially affect the operations


                                      -17-

<PAGE>

of Tenant, by written notice to the other party, given within 60 days after the
date of taking, terminate this Lease as of a date (to be set forth in said
notice) not earlier than 30 days after the date of the notice; rent shall be
apportioned as of the termination date.

          1104. If the Demised Premises or the Building (a) are declared unsafe
by any duly constituted authority having the power to make such determination,
or (b) are the subject of a violation notice or notice requiring repair or
reconstruction, Landlord at its option, and provided such repair shall cost in
excess of available condemnation awards may terminate this Lease, and in such
event, Tenant shall immediately surrender said premises to Landlord and
thereupon this Lease shall terminate and the rent shall be apportioned as of the
date of such termination.  In such event, Tenant waives all claims for injury,
and further waives all claims by reasons of any required surrender of possession
of the Demised Premises.  In the event such repair shall be in excess of
available condemnation awards, Tenant shall have the option to make such repairs
at its own cost and expense, providing Tenant shall comply with any and all
provisions set forth in Article XVI of this Lease.  In the event such repair
shall not cost in excess of available condemnation awards, Landlord shall be
required to make such repairs.

                      ARTICLE XII.   DAMAGE OR DESTRUCTION

          1201. If the Demised Premises are damaged by the elements or fire or
other casualty, not due to Tenant's negligence, Landlord (subject to
Section 1202 below) shall repair the damage, but the rent shall not be abated
unless the Demised Premises are thereby rendered untenantable in whole or in
part; if rendered untenantable only in part, the minimum rent and additional
rent shall be abated in proportion to the part rendered untenantable; if
rendered wholly untenantable, the entire minimum rent and additional rent shall
be abated provided, however, that in such event Landlord shall have the right to
terminate this Lease as of the date of the occurrence by written notice to
Tenant within 60 days thereafter.  In the event such repair shall be in excess
of available insurance proceeds, Tenant shall have the option to make such
repairs at its own cost and expense, providing Tenant shall comply with any and
all provisions set forth in Article XVI of this Lease.  In the event such repair
shall not cost in excess of available insurance proceeds, Landlord shall be
required to make such repairs.  However, if such casualty has occurred during
the last six months of the Lease Term, or any extended Term, Landlord need not
repair or restore unless Tenant has agreed or then agrees to exercise either the
first or second option under this Lease.

          1202. If the Building shall, in Landlord's opinion, be substantially
damaged to the extent of more than available insurance proceeds by the elements
or fire or other casualty, or in its reasonable opinion cannot be repaired
within 60 days, Landlord shall have the right, provided Tenant has not exercised
its rights under Section 1201 above, by written notice to Tenant within 60 days
after said occurrence, to terminate this Lease (unless terminated pursuant to
Section 1201) or if not repaired by Landlord within said 60 day period Tenant
may, after 30 days following said 60 day period, upon written notice, cancel its
obligations under this Lease and in either such event this Lease shall end as of
the date of such notice and the minimum rent and additional rent shall be
adjusted as of the date of said occurrence.


                                      -18-

<PAGE>

                        ARTICLE XIII.  SUBORDINATION TO 
               LANDLORD'S DOCUMENTS OF POSSESSION AND MORTGAGE   

          1301. Tenant acknowledges that this Lease and Tenant's rights
hereunder are subject and subordinate to (a) all agreements by and through which
Landlord has possession of the Building and the Demised Premises (herein
referred to as "Landlord's documents of possession") and to all mortgages now or
hereafter placed upon the Landlord's estate in the Building and the Demised
Premises and, if there be merger of Landlord's estate and the fee title, upon
the fee title.

          1302. If any Mortgagee or other person shall acquire title to the
Landlord's estate or the Demised Premises or building for foreclosure, deed in
lieu thereof, or otherwise, or, at any time during the term of this Lease, the
Landlord of the Demised Premises shall be the holder of a leasehold estate
covering Premises which include the Demised Premises, and if such leasehold
estate shall terminate or be terminated for any reason, Tenant agrees, at the
election and upon written notice of any owner of the premises which include the
Demised Premises, or, of any Mortgagee in possession thereof, or of any holder
of a leasehold thereafter affecting premises which include the Demised Premises,
to attorn, from time to time, to any such owner Mortgagee or holder, upon the
terms and conditions set forth herein for the remainder of the term demised in
this Lease, subject to Section 1303 below.  

                The foregoing provisions shall enure to the benefit of any such
owner, Mortgagee or holder and shall be self-operative upon any such demand,
without requiring any further instrument to give effect to such provisions.
Tenant, however, upon demand of any such owner, mortgagee or holder, agrees to
execute, from time to time, an instrument in confirmation of the foregoing
provisions, satisfactory to any such owner, mortgagee or holder, in which Tenant
shall acknowledge such attornment and shall set forth the terms and conditions
of its tenancy, which shall be the same as those set forth herein and shall
apply for the remainder of the term originally demised in this Lease.  Nothing
contained in this article shall be construed to impair any right otherwise
exercisable to any such owner, mortgagee or holder.  As a condition of Tenant's
obligations under this Section 1302, any present or future mortgagee shall
furnish a Subordination and Non-Disturbance Agreement for the benefit of Tenant
as provided in Section 1303 below.

          1303. Notwithstanding Sections 1301 and 1302, this Lease shall not be
subordinate to any Mortgage hereafter placed unless the holder of the Mortgage
in question shall provide a non-disturbance agreement to Tenant which shall
provide in substance that so long as Tenant shall not be in default hereunder,
the mortgagee shall not name Tenant as a party defendant in any action to
foreclose the Mortgage nor will this Lease be terminated or the possession of
Tenant of the Premises be disturbed by any such action.  Tenant shall, upon
request of the holder of any Mortgage, enter into such subordination and
non-disturbance agreement and if the holder is a bank, insurance company or
other institutional lender, such agreement may


                                      -19-

<PAGE>

contain such other provisions as are contained in such holder's usual or
standard form of subordination and non-disturbance agreement.  Within 45 days of
the execution of this Lease, but prior to the effectiveness of this Lease,
Landlord shall furnish to Tenant a subordination and non-disturbance agreement
conforming to the foregoing requirements from Landlord's current mortgagee with
such reasonable terms as are included in such mortgagee's standard form.    

                    ARTICLE XIV.   ASSIGNMENTS AND SUBLETTING

          1401. Except to an affiliate, parent, or subsidiary of Tenant, Tenant
shall not, without the prior consent of the Landlord (and to the extent required
by Landlord's Mortgagees, the consent of Landlord's Mortgagees), assign,
mortgage or pledge this Lease or underlet or sub-lease the Demised Premises, or
any part thereof, or permit any other person, firm or corporation to occupy the
Demised Premises, or any part thereof, which consent of Landlord (and, if
required, its Mortgagees) shall not be unreasonably withheld or delayed.  A
proposed assignment of this lease respecting only a portion of the Demised
Premises shall be deemed a "subletting" within the foregoing sentence.  Any
request for an assignment, mortgage or pledge of this lease shall give Landlord
the option (which must be exercised in writing  mailed within 15 days after 
receipt of written notice from Tenant of latter's intent to assign all of
Demised Premises, and effective upon the date of mailing of such writing by
Landlord), to terminate this lease as of the last day of the month next
succeeding the month during which Landlord mails such written exercise of this
option, and the rights of the parties shall be as if the last day of such month
were the date originally set forth in this lease as of the date of termination
thereof.  Anything herein to the contrary notwithstanding, the existing
subletting by Tenant of the Greenhouse is a permitted subletting, and Tenant
shall have the right during the initial term of this Lease (but not any renewal
or extension periods) to sublet up to 50% of the space in the Premises in the
aggregate (including the Greenhouse) without Landlord's consent so long as the
net rental and other consideration to be obtained for such subletting is not in
excess of the rental paid to Landlord hereunder.  Tenant shall furnish Landlord
with a copy of any agreement pertaining to any assignment or subletting.
Notwithstanding anything contained herein, any assignment or subletting (whether
or not consented to by Landlord) shall not release Tenant of any of its
obligations under this Lease.  

                       ARTICLE XV.  RULES AND REGULATIONS

          1501. Intentionally omitted. 

                         ARTICLE XVI.  ALTERATIONS AND 
                      SERVICES BY TENANT AND TRADE FIXTURES

          1601. Tenant shall not after commencement and occupancy under the
Lease do any work in or about the Demised Premises or make any alterations or
additions thereto without the prior written consent of Landlord, which consent
Landlord will not unreasonably withhold,


                                      -20-

<PAGE>

except Tenant may make such alterations or additions without the prior written
consent of Landlord to the extent of FIFTY THOUSAND DOLLARS ($50,000) per
project or related series of projects provided such additions or alterations do
not affect the roof or any structural portion of the Building or affect any
system (s) of the Building.  All such work to which Landlord consents shall be
performed and installed at Tenant's sole cost and expense in accordance with
plans and specifications to be supplied by Tenant, which plans, and the
contractors, subcontractors and all suppliers of labor or material shall in all
instances first be subject to Landlord's approval, which approval shall not be
unreasonably withheld.  During the work, Tenant shall maintain such insurance as
Landlord may reasonably require for the benefit of Landlord or such other
parties as Landlord shall designate.  Landlord may require that Tenant furnish a
guarantee by each of Tenant's prime contractors and materialmen for the benefit
of Landlord, Tenant and such other parties as Landlord shall designate that all
work, materials and equipment will be in accordance with the plans and
specifications and that they will promptly, upon notice, correct and repair at
their own cost and expense any deficiency, defect, fault or imperfection of
materials, equipment or workmanship which appears within one year after
completion of their work or installation.

          1602. No work or installation by Tenant at the Demised Premises, Land
or Building, shall be done except after providing to Landlord appropriate
assurances including, but not limited to, guarantees and indemnifications in
connection with the possible filing of any mechanics liens and/or notice of
intention to file a mechanics lien, filing of a waiver of the right to file any
lien therefor (commonly known as a "mechanics" lien) in the local Office, as
provided by law, so as to constitute an effective waiver by anyone having a
right to file such a lien, if such a notice of intention is filed.  If any such
lien is filed, Tenant shall cause it to be discharged or satisfied within 30
days of filing.

          1603. No work, services or installation by Tenant in or about the
Demised Premises, Land or Building, shall be performed or installed except by
workmen and mechanics working in harmony and not reasonably interfering with
labor employed by Landlord, landlord's mechanics or their contractors or by any
other Tenant or their contractors.  Any violation hereof shall automatically
constitute a permitted cancellation by Landlord of any prior Landlord's consent
to or permission for such work or installation.

          1604. Any alterations, improvements or additions made by Tenant after
occupancy under the Lease, except pursuant to a written consent by Landlord
which provides that Tenant may remove the same, shall remain upon the Premises
at the expiration or earlier termination of this Lease and shall become the
property of Landlord, unless prior to the termination of this lease, Landlord
gives Tenant written notice to remove the same, in which event Tenant shall
remove them and restore the Premises to the same good order and condition in
which they were at the time of delivery of possession to Tenant.  Tenant need
not remove any new laboratories installed by Tenant in compliance with this
Lease, nor remove other items, if at the time Landlord gives Tenant any consent
as to those items Landlord agrees that Tenant shall not be required to remove
them at the expiration or earlier termination of the Lease.  Tenant's


                                      -21-

<PAGE>

right to leave new laboratories on the Premises is conditioned upon delivery of
bills of sale to Landlord and delivery of confirmation that the equipment and
other property is not leased and that it is not encumbered.  Any other
alterations, improvements or additions made by Landlord for Tenant shall remain
the property of Landlord at expiration or earlier termination of this Lease.
Should Tenant fail to remove any alterations, improvements or additions required
to be removed by it, Landlord may do it, and Tenant shall pay the cost and
expense thereof to Landlord as additional rent upon demand.

          1605. Except for any fixtures or equipment purchased or installed by
Landlord, which shall belong to the Landlord, all fixtures and equipment owned
by Tenant in the Demised Premises ("TENANT'S FIXTURES"), except lighting
fixtures and air conditioning equipment, shall remain the property of Tenant and
(except as set forth in Section 1604) shall be removed on or before the
termination date of this Lease, but at Landlord's option, any fixtures not
removed on or before the lease termination date shall either become Landlord's
property, or Landlord may remove and dispose of them, and in such event Tenant
shall pay the cost and expense thereof to Landlord as additional rent upon
demand.  Upon removal of Tenant's Fixtures, Tenant shall promptly restore the
Demised or Leased Premises to the original order and condition existing
immediately prior to such removal of Tenant's Fixtures and shall repair any and
all damage caused by said removal.  Any and all other fixtures installed by
Landlord prior to the commencement of this Lease shall remain the property of
the Landlord.  

          1606. In the event Tenant shall enter into any arrangement to finance
all or any portion of the Tenant's Fixtures (as defined in Section 1605), either
before or after the installation or placement thereof upon the Leased Premises
and regardless of whether such financing shall be in the form of a security
agreement, equipment lease, equipment sale-leaseback or otherwise, Landlord
agrees within 30 days after request therefor to execute and deliver a customary
waiver of lien to evidence Landlord's agreement that Landlord waives any lien
rights or claims in the Tenant's Fixtures, provided that Landlord and its
Mortgagees first receive (i) an itemized list of the Tenant's Fixtures which are
subject to the Lease or financing arrangement, and (ii) an agreement in form and
substance reasonably satisfactory to Landlord and its Mortgagees that the owner
and/or lessor and/or financing party (x) will not remove any Tenant's Fixtures
except upon prior notice to Landlord and its Mortgagees, and at reasonable
business hours and (y) will indemnify, defend and hold Landlord and its
Mortgagees harmless from and against any loss, cost, liability, damage or
expense (including reasonable attorneys' fees) caused by or arising from the
removal of any Tenant's Fixtures.  

          1607. From and after the Commencement Date Tenant shall have the right
to make exterior aesthetic improvements to the Land and Building ("TENANT'S
WORK"), provided such Tenant's Work otherwise complies with the requirements of
this Article XVI, and Landlord shall pay to Tenant or directly to the parties
invoicing Tenant, in consideration of the performance of such work by Tenant, an
allowance in the sum of up to ONE HUNDRED THOUSAND DOLLARS ($100,000)
("LANDLORD'S CONTRIBUTION") as follows:


                                      -22-

<PAGE>

                (a)  On or before the 15th day of each month during the course
of Tenant's Work, Tenant shall deliver to Landlord a statement setting forth the
total costs and expenses incurred by Tenant in connection with the procurement
and performance of Tenant's Work for the preceding month and, provided Tenant is
not then in default under this Lease, within 30 days after the submission of
such statement to Landlord, Landlord shall pay to Tenant an amount equal to the
lesser of (i) the amount of such costs and expenses specified on the statement
and (ii) the amount by which such costs and expenses, together with all prior
payments by Landlord to Tenant pursuant to this subparagraph, shall be less than
ONE HUNDRED THOUSAND DOLLARS ($100,000).  

                (b)  If the actual cost incurred by Tenant in procuring or
performing Tenant's Work is less than Landlord's Contribution, the unexpended
sum will be retained by Landlord. 

                ARTICLE XVII.  PERFORMANCE OF TENANT'S COVENANTS

          1701. Except for the payments of rent and Additional Rent, which shall
be payable when due, Tenant shall perform all agreements on its part to be
performed within such period provided in Section 2001 and if Tenant does not
perform to Landlord's reasonable satisfaction within such time periods, Landlord
may, at its option, upon written notice to Tenant (except for emergency
situations, in which case notice may be oral) perform for Tenant and in so doing
Landlord shall have the right to cause its agents, employees and contractors to
enter upon the Demised Premises without liability to Tenant for any loss or
damage resulting therefrom; and Tenant shall pay the cost and expense of such
performance, together with interest as set forth in Section 501 herein, to
Landlord as additional rent upon demand.

                          ARTICLE XIII.  AIR AND LIGHT

          1801. This Lease does not grant any right to light and air.

                              ARTICLE XIX.  NOTICES

          1901. Any notice or demand given by Landlord to Tenant shall be in
writing and shall be sent by registered or certified mail, postage prepaid 

                     ADDRESSED TO TENANT AS FOLLOWS:
                     PHARMACOPEIA, INC.
                     101 College Road
                     Princeton, NJ 08540
                     Attention:  Lewis J. Shuster

or to such other address as Tenant may from time to time designate by written
notice to Landlord.


                                      -23-

<PAGE>

                Any notice or demand to be given by Tenant to Landlord shall not
be deemed to have been duly given or served unless in writing and forwarded by
registered or certified mail, postage prepaid, 

                     ADDRESSED TO LANDLORD AS FOLLOWS:
                     SOUTH BRUNSWICK RENTAL I, LTD.
                     c/o PHILIP S. SELTZER, General Partner
                     455 Pennsylvania Avenue, Suite 125
                     P.O. Box 325
                     Ft. Washington, PA 19034

                     WITH A COPY TO:
                     A.J. Land, Comptroller
                     c/o PHILIP S. SELTZER, General Partner
                     P.O. Box 325
                     Ft. Washington, PA 19034

or to such other address or addresses as Landlord may from time to time
designate by written notice to Tenant.

                The customary mail receipt shall be evidence of service of
notice.

                         ARTICLE XX.  EVENTS OF DEFAULT

          2001. Each of the following shall constitute an event of default
hereunder:

                (a)  The filing by or against Tenant of a petition for
adjudication as a bankrupt or insolvent, or for reorganization or appointment of
a receiver or trustee of Tenant's property; an assignment by Tenant for the
benefit of creditors; or the taking possession of Tenant's property; an
assignment by Tenant for the benefit of creditors; or the taking possession of
Tenant's property by a governmental officer or agency pursuant to statutory
authority for the dissolution or liquidation of Tenant;

                (b)  Tenant failing to pay when due any sum herein required to
be paid by Tenant; however, Tenant shall be provided in any 12 month period of
this Lease term with no more than two notices of non-payment of rent and
requiring payment within ten days of receipt thereof.  In the event that Tenant
shall receive two notices during an 12 month period, Tenant thereafter shall be
in default under this Lease in the event that it has failed to pay when due any
sum herein required to be paid by Tenant and no further notice will be required
to be provided to Tenant.

                (c)  Tenant failing to perform any other covenant or condition
of this Lease within 30 days after written notice and demand, or, if the
performance requires more than 30 days to complete, failing to begin performance
within 30 days and completing diligently thereafter, but in no event later than
30 days thereafter;


                                      -24-

<PAGE>

            ARTICLE XXI.   RIGHTS OF LANDLORD UPON DEFAULT BY TENANT

          2101. In the event of the occurrence of an event of default hereunder,
at the sole option of Landlord, and to the extent permitted by law;

                (a)  The whole balance of rent for the entire term less any net
proceeds to be due pursuant to a sublet, which subletting shall not be the
responsibility or obligation of Landlord, and other charges, payments, taxes,
costs, fees and expenses herein agreed to be paid by Tenant or any part thereof,
and also all costs and officers' commissions, including watchman's wages, and a
collection fee of 5% shall be taken to be due and payable and in arrears as if
by the terms and provisions of this Lease said balance or rent and other
charges, payments, taxes, costs, fees and expenses were on that date payable in
advance; and

                (b)  This Lease and the term hereby created shall, at the option
of Landlord, determine and become absolutely void without any right on the part
of Tenant to save the forfeiture by payment of any sum due or by other
performance of any condition, term or covenant broken; and

                            (i)   Landlord may, without notice or demand, enter
the Demised Premises, breaking open locked doors, if necessary, to effect
entrance, without liability to action for prosecution or damages for such entry
or for the manner thereof, for the purpose of recovering possession and for
other purposes, and Tenant hereby releases and discharges Landlord and its
agents from all claims, actions, suits, damages and penalties, for or by reason
or on account of any entry; and

                           (ii)   proceed to collect or otherwise sue for the
total amount so due or any part thereof; and

                          (iii)   provided always that if Tenant without any
previous demand (except as otherwise expressly provided herein) shall fail or
omit to pay the rents or sums hereby reserved on the days and at the times when
the same are made payable, or shall in any other respect fail to fulfill any of
the obligations imposed upon Tenant hereunder, then this Lease and the term
hereby created shall, at Landlord's option, to be signified by a written notice
of its intention so to determine this Lease on any day therein fixed, delivered
to Tenant or left at the Demised Premises at least five days previous to the day
so fixed, determined and become absolutely void without any right on the part of
Tenant after the day so fixed to save the forfeiture by payment of rent due or
by other performance of the covenants or conditions thus violated.

                           (iv)   Landlord may lease said premises or any part
or parts thereof to such person or persons as may in Landlord's discretion seem
best, and Tenant shall be liable for any loss of rent for the balance of the
term.


                                      -25-

<PAGE>

                (c)  If proceedings shall be commenced by Landlord to recover
possession under the appropriate state law, either at the end of the term or
sooner termination of this lease, or for non-payment of rent or any other
reason, Tenant specifically waives the right to notice greater than five days
that may be required by any state Act and agrees that five days notice shall be
sufficient in any case.

                (d)  The right to enforce all of the provisions of this Lease
hereinabove provided for may, at the option of any assignee of this Lease, be
exercised by any assignee of Landlord's right, title and interest in this Lease
in his, her or their own name, notwithstanding the fact that any or all
assignments of the said right, title and interest may not be executed and/or
witnesses in accordance with the appropriate state law that has been or may
hereafter be passed, and Tenant hereby expressly waives the requirements of any
and all laws regulating the manner and/or form in which such assignments shall
be executed and witnessed.

                (e)  Tenant shall pay the reasonable expenses of Landlord,
including reasonable attorney's fees, incurred in enforcing any of the
obligations of Tenant under this Lease, or in any litigation in which Landlord
shall, without fault of Landlord, become involved through or on account of this
Lease.

                (f)  Tenant may not cure a default and save forfeiture or
prevent other remedy of Landlord following expiration of notice period herein
provided and a default must be cured in its entirety to be considered as cured
within the said notice period.

          2102. No determination of this Lease not taking or recovering
possession of the premises, shall deprive Landlord of any remedies or actions
against Tenant for rent or for damages for the breach of any covenant herein
contained nor shall the bringing of any such action for rent or breach of
covenant, nor the resort to any other remedy herein provided for the recovery of
rent or damages for such breach be construed as a waiver of the right to insist
upon for forfeiture and to obtain possession in the manner herein provided.

          2103. Tenant expressly waives the benefit of any and all laws now made
or which may hereafter be made, exempting or releasing goods on said premises or
elsewhere any property in any way belonging to Tenant, from levy and sale upon
distress for rent or other charges herein reserved or payable as rent, or upon
an execution on any judgment obtained in an action brought for non-payment of
rent, or in any and all suits, actions or proceedings, amicable or otherwise,
for the collection of rent or other charges herein reserved or payable as rent
due and in arrears, for any expense incurred in removing rubbish or refuse
matter from said premises, and for any damage for the non-fulfillment of any of
the covenants herein contained.

          2104. All remedies hereinbefore given to Landlord and all rights and
remedies given to it at law and in equity shall be cumulative and concurrent.


                                      -26-

<PAGE>

                           ARTICLE XXII.   TERMINATION

          2201. Unless extended pursuant to an option, this Lease shall
terminate automatically at the end of the term or extended term of this Lease
without any notice required by either party.

                        ARTICLE XXIII.   CUSTOM AND USAGE

          2301. Landlord shall have the right at all times to enforce the
covenants and conditions of this Lease in strict accordance with the terms
hereof despite any conduct or custom on the part of the Landlord in refraining
from so doing at any time or times, and despite any contrary law, usage or
custom or any failure by Landlord to enforce its rights at any time or times.

              ARTICLE XXIV.   SCOPE AND INTERPRETATION OF AGREEMENT

          2401. This Lease is the only agreement between the parties hereto
pertaining to the Demised Premises, and all negotiations and oral agreements
acceptable to the parties are included herein.   The laws of the state in which
the Demised Premises is located shall govern the validity, interpretation,
performance and enforcement of this Lease.

                             ARTICLE XXV.   CAPTIONS

          2501. Any headings preceding the text of the several Articles and
subparagraphs hereof are inserted solely for convenience of reference and shall
not constitute a part of this Lease nor shall they affect its meaning,
construction or effect.

                          ARTICLE XXVI.   SEVERABILITY

          2601. If any provision of this Lease is held to be invalid, the
remaining provisions shall not be affected thereby but shall continue in full
force and effect.

                ARTICLE XXVII.   PARTIES, SUCCESSORS AND ASSIGNS

          2701. The term "TENANT" shall refer to each and every person or party
mentioned as a Tenant herein, be the same one or more.  If there shall be more
than one Tenant, they shall be bound jointly and severally by all of the terms,
covenants and agreements of this Lease and any notice required or permitted by
the terms of this Lease may be given by or to any one thereof and shall have the
same force and effect as if given by or to all.  

          2702. The term "LANDLORD" as used in this Lease shall refer only to
the owner for the time being of Landlord's estate in the Demised Premises or the
Building of which it is a part.  Landlord shall be and is hereby relieved of all
covenants and obligations of Landlord hereunder after the date of transfer of
Landlord's estate in the Demised Premises or the Building of which it 


                                      -27-

<PAGE>

is a part, and it shall be construed without further agreement between the
parties that the transferee has assumed and agreed to carry out any and all
covenants and obligations of Landlord hereunder during such time as said
transferee shall own or hold Landlord's estate or interest in the Demised
Premises or the Building of which it is a part.  The provisions of this Article
XXVI shall apply to each successive transfer of Landlord's interest or estate.
The liability of the Landlord under this Lease shall be and is hereby limited to
Landlord's interest in the Premises, and no other asset of Landlord shall be
affected by reason of any liability which Landlord may have to Tenant or to any
other person by reason of this Lease, the execution thereof, or the acquisition
of Landlord's interest.

          2703. Subject to the provisions of 2702 hereof, all right, obligations
and liabilities hereupon given to or imposed upon the respective parties hereto
shall extend to and bind the several and respective heirs, executors,
administrators, successors, sub-tenants and assigns of said parties.


                       ARTICLE XXVIII.   SECURITY DEPOSIT

          2801. Upon execution of this Lease, Tenant will deposit with the
Landlord a security deposit in the amount of ONE HUNDRED FORTY-THREE THOUSAND
THREE HUNDRED THIRTY-THREE DOLLARS ($143,333), and a financial information
package acceptable to the Landlord pertaining to Tenant's current financial
condition.  The security deposit shall be held by Landlord without interest, and
may be applied by Landlord, at its option, toward the cost of repairing or
replacing any equipment damaged or wrongfully removed from the Demised Premises
and toward repair of damage (other than ordinary wear and tear) to the Demised
Premises or for any other liabilities or indebtedness of Tenant to Landlord, or
if Landlord elects, at its option, for payment of brokerage commissions.  This
deposit is not to be used or applied by Tenant as a substitute for rent due any
month but may be so applied by Landlord at any time at Landlord's option.  The
use, application or retention of the security deposit, or any portion thereof,
by Landlord shall not prevent Landlord from exercising any other right or remedy
provided by this Lease or by law and shall not operate as a limitation on any
recovery to which Landlord may otherwise be entitled.  If any portion of the
security deposit is used, applied or retained by Landlord for the purposes set
forth above, Tenant agrees, within ten days after a written demand therefor is
made by Landlord, to deposit cash with the Landlord in an amount sufficient to
restore the security deposit to its original amount; however nothing contained
herein shall require Landlord to make such demand upon Tenant.  Notwithstanding
the preceding sentence, Tenant shall not be obligated to restore any part of the
security deposit applied by Landlord to the payment of brokerage commissions.
The balance of the security deposit, if any, will be refunded to Tenant within
30 days after the end of the Lease term and after Tenant has vacated said
Demised Premises after due notice to Landlord.

                             ARTICLE XXIX.   BROKERS

          2901. Julien J. Studley, Inc. (the "BROKER) has acted as the sole
broker and finder 


                                      -28-

<PAGE>

with respect to this Lease, and Landlord shall be solely responsible for any
commission due the Broker in accordance with a separate agreement between
Landlord and Broker.  Except for the Broker, Tenant represents and warrants to
Landlord that Tenant has had no dealings, negotiations or consultations with
respect to the Premises or this transaction with any broker or finder and that
no broker or finder called the Premises to Tenant's attention for lease or took
any part in any dealings, negotiations or consultations with respect to the
Premises or this Lease.  In the event that any broker or finder other than
Broker claims to have submitted the Premises to Tenant, to have induced Tenant
to lease the Premises or to have taken part in any dealings, negotiations or
consultations with respect to the Premises or this Lease, Tenant will be
responsible for and will indemnify and save Landlord harmless from and against
all costs, fees (including, without limitation, attorney's fees), expenses,
liabilities and claims incurred or suffered by Landlord as a result thereof.  

                        ARTICLE XXX.   OPTIONS TO EXTEND

          3001. Provided Tenant is not in default with regard to any of the
monetary or material non-monetary terms of this Lease, the Landlord agrees that
Tenant shall have and is hereby granted two successive options to extend the
term of this Lease for a period of one year on each such option.  Such extended
term(s) to begin respectively upon the expiration of the term of this Lease or
of this Lease as extended, and all the terms, covenants and provisions of this
Lease shall apply to each such extended term with the exception, however, that
the Tenant shall not have any further option to again extend the term of this
Lease following the exercise, if any, of the second option to extend.  If the
Tenant shall elect to exercise the aforesaid option(s), it shall do so by
written notice to Landlord no later than nine months prior to the expiration of
the term of this Lease or of this Lease as extended.  The annual rent (payable
in equal monthly installments on the first day of the month in advance) during
the two option periods shall be as follows:  

                (a)  For the first option period (April 1, 2000 to March 31,
2001), the annual rent shall be ONE MILLION EIGHT HUNDRED TWENTY THOUSAND
DOLLARS ($1,820,000), payable in equal monthly installments in advance of ONE
HUNDRED FIFTY-ONE THOUSAND SIX HUNDRED SIXTY-SEVEN DOLLARS ($151,667).  All
other terms and conditions of the Lease to remain in full force and effect.  

                (b)  For the second option period (April 1, 2001 to March 31,
2002), the annual rent shall be ONE MILLION NINE HUNDRED TWENTY  THOUSAND
DOLLARS ($1,920,000), payable in equal monthly installments in advance of ONE
HUNDRED SIXTY THOUSAND DOLLARS ($160,000).  All other terms and conditions of
the Lease to remain in full force and effect.


                                      -29-

<PAGE>

     IN WITNESS WHEREOF, the parties have caused these presents to be duly
executed as a sealed instrument as of the day and year first above written.


                                         LANDLORD:

Witness:                                 SOUTH BRUNSWICK RENTAL I, LTD.

                                    By:   
- ------------------------------           --------------------------------------
                                              General Partner


                                         TENANT:

Attest:                                  PHARMACOPEIA, INC.

                                     By:
- ------------------------------          ---------------------------------------


                                         Its:
                                                 ------------------------------


                                      -30-

                    

<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
FINANCIAL STATEMENTS FOR THE NINE MONTHS ENDED SEPTEMBER 30, 1996 AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE IN SUCH STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-END>                               SEP-30-1996
<CASH>                                          32,731
<SECURITIES>                                    44,223
<RECEIVABLES>                                        0
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                                77,980
<PP&E>                                           9,603
<DEPRECIATION>                                 (1,780)
<TOTAL-ASSETS>                                  86,602
<CURRENT-LIABILITIES>                           18,340
<BONDS>                                              0
                                0
                                          0
<COMMON>                                             1
<OTHER-SE>                                      66,685
<TOTAL-LIABILITY-AND-EQUITY>                    86,602
<SALES>                                              0
<TOTAL-REVENUES>                                 9,506
<CGS>                                                0
<TOTAL-COSTS>                                    8,638
<OTHER-EXPENSES>                                 9,898
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                 192
<INCOME-PRETAX>                                (6,302)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                            (6,302)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                   (6,302)
<EPS-PRIMARY>                                    (.59)
<EPS-DILUTED>                                        0
        

</TABLE>


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