GUILFORD PHARMACEUTICALS INC
10-Q, 1996-08-14
PHARMACEUTICAL PREPARATIONS
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<PAGE>   1
                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C.  20549

                                   FORM 10-Q

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

                  FOR THE QUARTERLY PERIOD ENDED JUNE 30, 1996
                                                 -------------

                         COMMISSION FILE NUMBER 0-23736
                                                -------

                         GUILFORD PHARMACEUTICALS INC.
            (Exact name of registrant as specified in its charter)
- --------------------------------------------------------------------------------
 
      DELAWARE                                                 52-1841960   
- --------------------------------------------------------------------------------
(State or other jurisdiction of                          (IRS Employer
incorporation or organization)                           Identification No.)


       6611 TRIBUTARY STREET, BALTIMORE, MARYLAND                 21224
- --------------------------------------------------------------------------------
(Address of principal executive offices)                       (Zip Code)


                                 410-631-6300
- --------------------------------------------------------------------------------
              (Registrant's telephone number, including area code)


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 
                           ------       -----

Indicate the number of shares outstanding of each of the issuer's classes of
common stock, as of the latest practicable date.

<TABLE>                                           
<CAPTION>                                       
         Class                                          Outstanding at August 13, 1996
<S>                                                     <C>
Common Stock, $.01 par value                                    9,307,251               
- ----------------------------                            ------------------------------
</TABLE>                                        
<PAGE>   2
                         GUILFORD PHARMACEUTICALS INC.
                         (A DEVELOPMENT STAGE COMPANY)

                                     INDEX

<TABLE>
<CAPTION>
                                                                                                  Page (s)
                                                                                                  ----    
<S>         <C>                                                                                    <C>
PART I.     FINANCIAL INFORMATION (UNAUDITED)

            Item 1.  Financial Statements

                     Consolidated Balance Sheets
                     June 30, 1996 and December 31, 1995                                           3

                     Consolidated Statements of Operations
                     Three months ended June 30, 1996 and 1995;
                     Six months ended June 30, 1996 and 1995
                     and the period from July 14, 1993 (date of
                     inception) to June 30, 1996                                                   4

                     Consolidated Statement of Stockholders' Equity
                     Six months ended June 30, 1996                                                5

                     Consolidated Statements of Cash Flows
                     Three months ended June 30, 1996 and 1995;
                     Six months ended June 30, 1996 and 1995
                     and the period from July 14, 1993 (date of
                     inception) to June 30, 1996                                                   6

                     Notes to Consolidated Financial Statements                                    7-9

            Item 2.  Management's Discussion and Analysis of Financial
                     Condition and Results of Operations                                           10-13

PART II.    OTHER INFORMATION                                                                      14-16

            SIGNATURES                                                                             17
</TABLE>





                                       2
<PAGE>   3

                         GUILFORD PHARMACEUTICALS INC.
                                AND SUBSIDIARIES
                          (A DEVELOPMENT STAGE COMPANY)


                          CONSOLIDATED BALANCE SHEETS


<TABLE>
<CAPTION>
                                                                   JUNE 30,           DECEMBER 31,
                                                                     1996                 1995
                                                                     ----                 ----
                                                                 (UNAUDITED)
<S>                                                           <C>                   <C>
                  ASSETS
Current assets:
  Cash and cash equivalents                                   $    10,898,687       $     4,259,531
  Short-term investments                                           51,499,407            11,552,038
  Short-term investments - restricted                                 238,021               250,000
  Licensing fee receivable                                                -                 555,500
  Other current assets                                                159,418               291,580  
                                                              -----------------     -----------------
         Total current assets                                      62,795,533            16,908,649
Investments - restricted                                            5,143,023             3,392,284
Notes receivable from employees                                        59,658                85,476
Property and equipment, net                                        11,967,070             5,455,791
Other assets                                                          198,937               206,202  
                                                              -----------------     -----------------
                                                              $    80,164,221       $    26,048,402  
                                                              =================     =================

   LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
  Accounts payable:
    Trade                                                     $     2,013,051       $     1,149,743
    Construction                                                      724,248               489,960
  Bond & Term Loan payable - current portion                          967,567               293,469
  Advance from Gell Pharmaceuticals Inc.                              189,112                91,852
  Accrued payroll and related costs                                   547,762               681,000
  Accrued expenses and other current liabilities                      442,422               873,056  
                                                              -----------------     -----------------
      Total current liabilities                                     4,884,162             3,579,080

Long-term liabilities:
  Bond payable, less current portion                                6,989,620             4,695,508
  Term Loan payable, less current portion                           1,246,621                     - 
                                                              -----------------     -----------------
      Total long-term liabilities                                   8,236,241             4,695,508

Commitments

Stockholders' equity:
   Convertible preferred stock, par value $.01 per share
     Authorized 4,700,000 shares,  none issued                              -                     -
   Series A junior participating preferred stock,
     par value $.01 per share. Authorized 300,000
     shares, none issued                                                    -                     -
   Common stock, par value $.01 per share.
     Authorized 20,000,000 shares; 9,301,621 and
     6,793,065 issued and outstanding at June 30, 1996
     and December 31, 1995, respectively                               93,016                67,931
   Additional paid-in capital                                      89,047,555            38,122,463
   Notes receivable on common stock                                  (139,500)             (139,500)
   Deficit accumulated during development stage                   (21,691,433)          (19,947,437)
   Deferred compensation                                             (265,820)             (329,643) 
                                                              -----------------     -----------------
        Total stockholders' equity                                 67,043,818            17,773,814  
                                                              -----------------     -----------------

                                                              $    80,164,221       $    26,048,402  
                                                              =================     =================
</TABLE>

SEE ACCOMPANYING NOTES TO CONSOLIDATED FINANCIAL STATEMENTS




                                       3
<PAGE>   4

                         GUILFORD PHARMACEUTICALS INC.
                                AND SUBSIDIARIES
                          (A DEVELOPMENT STAGE COMPANY)


                     CONSOLIDATED STATEMENTS OF OPERATIONS
                                  (UNAUDITED)


<TABLE>
<CAPTION>
                                                    THREE MONTHS ENDED JUNE 30,              SIX MONTHS ENDED JUNE 30,
                                                      1996             1995                  1996               1995     
                                                 ---------------   ---------------    ----------------    ---------------
<S>                                              <C>              <C>                 <C>                 <C>
Revenues:
    Contract revenue                             $    7,500,000    $            -     $     7,500,000     $            -
    License fee revenue                                       -                 -             100,000                  -
    Research and development revenue
        under collaborative agreements                    9,052            12,970              18,701             12,970 
                                                 ---------------   ---------------    ----------------    ---------------
       Total revenues                                 7,509,052            12,970           7,618,701             12,970
Operating expenses:
    Research and development                          3,335,334         1,905,782           6,709,461          3,490,249
    Research and development - Gell
       Pharmaceuticals Inc.                             225,551           207,086             423,222            207,086
    General and administrative                        1,852,897         1,040,939           3,197,125          1,815,892
    Compensation expense - warrants                           -                 -                   -                  - 
                                                 ---------------   ---------------    ----------------    ---------------
       Total operating expenses                       5,413,782         3,153,807          10,329,808          5,513,227 
                                                 ---------------   ---------------    ----------------    ---------------
Income (Loss) from operations                         2,095,270        (3,140,837)         (2,711,107)        (5,500,257)
Other income (expense):
    Interest income                                     795,050           145,502           1,153,459            324,290
    Other income                                          1,076           123,332               1,076            152,922
    Interest expense                                   (116,292)          (32,688)           (187,424)           (70,653)
                                                 ---------------   ---------------    ----------------    ---------------
          Net Income (loss)                      $    2,775,104    $   (2,904,691)    $    (1,743,996)    $   (5,093,698)
                                                 ===============   ===============    ================    ===============

Net Income (loss) per share                               $0.27    $        (0.76)    $         (0.22)            ($1.34)
                                                 ===============   ===============    ================    ===============

Shares used in computation of
 net income (loss) per share                         10,236,759         3,834,867           8,015,569          3,810,706 
                                                 ===============   ===============    ================    ===============
</TABLE>



<TABLE>
<CAPTION>
                                              JULY 14, 1993
                                         (DATE OF INCEPTION) TO
                                              JUNE 30, 1996    
                                         ----------------------
<S>                                         <C>
Revenues:
    Contract revenue                        $        7,500,000
    License fee revenue                                655,500
    Research and development revenue
        under collaborative agreements                  48,971 
                                            -------------------
       Total revenues                                8,204,471
Operating expenses:
    Research and development                        19,794,108
    Research and development - Gell
       Pharmaceuticals Inc.                            955,849
    General and administrative                      10,300,415
    Compensation expense - warrants                    991,304 
                                            -------------------
       Total operating expenses                     32,041,676 
                                            -------------------
Income (Loss) from operations                      (23,837,205)
Other income (expense):
    Interest income                                  2,326,731
    Other income                                       200,395
    Interest expense                                  (381,354)
                                            -------------------
          Net Income (loss)                 $      (21,691,433)
                                            ===================

Net Income (loss) per share                         N/M
Shares used in computation of
 net income (loss) per share
</TABLE>


N/M = NOT MEANINGFUL

SEE ACCOMPANYING NOTES TO CONSOLIDATED FINANCIAL STATEMENTS





                                       4
<PAGE>   5





                         GUILFORD PHARMACEUTICALS INC.
                                AND SUBSIDIARIES
                          (A DEVELOPMENT STAGE COMPANY)


                 CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY
                         SIX MONTHS ENDED JUNE 30, 1996
                                  (UNAUDITED)

<TABLE>
<CAPTION>
                                                                                                            DEFICIT
                                                           COMMON STOCK                        NOTES      ACCUMULATED
                                                        -------------------     ADDITIONAL   RECEIVABLE      DURING
                                                         NUMBER                  PAID-IN     ON COMMON    DEVELOPMENT
                                                        OF SHARES    AMOUNT      CAPITAL       STOCK         STAGE
                                                        ---------    ------      -------       -----         -----
<S>                                                     <C>         <C>        <C>            <C>         <C>
BALANCE, DECEMBER 31, 1995                              6,793,065   $ 67,931   38,122,463     (139,500)   (19,947,437)
Issuance of common stock in public offering
  at $20.00 per share, net of offering costs            2,300,000     23,000   42,871,741
Other issuances of common stock                           208,556      2,085    7,560,963
Proceeds from Gell Pharmaceuticals relating to
  the put option                                                                  448,802
Amortization of deferred compensation                                              43,586
Net loss for the period                                                                                    (1,743,996)
                                                       ----------  ---------  -----------    ----------  -------------
BALANCE, JUNE 30, 1996                                  9,301,621   $ 93,016   89,047,555     (139,500)   (21,691,433)
                                                       ----------  ---------  -----------    ----------  -------------
</TABLE>




                                                                                
<TABLE>
<CAPTION>                                                                                   TOTAL
                                                                      DEFERRED          STOCKHOLDERS'
                                                                    COMPENSATION            EQUITY
                                                                    ------------            ------
<S>                                                                    <C>             <C>
BALANCE, DECEMBER 31, 1995                                             (329,643)       $   17,773,814
Issuance of common stock in public offering at $20.00
  per share, net of offering costs                                                         42,894,741
Other issuances of common stock                                                             7,563,048
Proceeds from Gell Pharmaceuticals relating to the put option                                 448,802
Amortization of deferred compensation                                    63,823               107,409
Net loss for the period                                                                    (1,743,996)
                                                                      ----------      ----------------
BALANCE, JUNE 30, 1996                                                 (265,820)       $   67,043,818 
                                                                      ----------      ----------------
</TABLE>

SEE ACCOMPANYING NOTES TO CONSOLIDATED FINANCIAL STATEMENTS





                                       5
<PAGE>   6
                         GUILFORD PHARMACEUTICALS INC.
                                AND SUBSIDIARIES
                          (A DEVELOPMENT STAGE COMPANY)

                     CONSOLIDATED STATEMENTS OF CASH FLOWS
                                  (UNAUDITED)

<TABLE>
<CAPTION>
                                                                      THREE MONTHS ENDED JUNE 30,      SIX MONTHS ENDED JUNE 30,
                                                                      ---------------------------      -------------------------
                                                                        1996             1995             1996            1995
                                                                        ----             ----             ----            ----
<S>                                                               <C>             <C>              <C>              <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
   Net Income (Loss)                                              $   2,775,104   $   (2,904,691)  $   (1,743,996)  $  (5,093,698)
   Adjustments to reconcile net income (loss) to net
     cash provided by (used in) operating activities:
      Depreciation and amortization                                     258,727          126,710          489,612         186,052
      Noncash compensation expense                                       75,497           31,672          107,409          48,736
      Provision for loss related to advance to underwriter                    -                -                -               -
      Preferred stock issued in exchange for technology acquired
         in the research and development stage                                                 -                                -
      Preferred stock issued in exchange for various expenses
         paid for by Scios Nova Inc. on behalf of the Company                 -                -                -               -
   Changes in assets and liabilities:
      Licensing fee receivable                                          100,000                -          555,500               -
      Notes receivable                                                   26,995            1,802           25,818          22,194
      Other current assets                                               12,721          (64,560)         132,162         (63,008)
      Other assets                                                        5,162              240            7,265         (23,119)
      Accounts payable                                                 (804,532)         237,056        1,097,596        (381,448)
      Advance from Gell Pharmaceuticals Inc.                            189,112          163,750           97,260         163,750
      Accrued expenses and other liabilities                           (351,608)         165,424         (563,872)         74,706 
                                                                  --------------  ---------------  ---------------  --------------
         Net cash provided by (used in) operating activities          2,287,178       (2,242,597)         204,754      (5,065,835)
                                                                  --------------  ---------------  ---------------  --------------
CASH FLOWS FROM INVESTING ACTIVITIES:
   Investment in purchases of property and equipment                 (3,965,254)        (929,519)      (7,000,891)     (1,877,818)
   Maturities of short-term investments                              13,812,796        3,163,231       20,497,621       9,448,734
   Purchases of short-term investments                              (57,000,226)      (1,097,622)     (62,195,729)     (6,686,801)
   Restricted cash                                                            -                -           11,979               - 
                                                                  --------------  ---------------  ---------------  --------------
         Net cash provided by (used in) investing activities        (47,152,684)       1,136,090      (48,687,020)        884,115
                                                                  --------------  ---------------  ---------------  --------------
CASH FLOWS FROM FINANCING ACTIVITIES:
   Proceeds from issuance of preferred stock                                  -                -                -               -
   Net proceeds from issuances of common stock                       13,215,993          311,380       50,457,789         478,397
   Proceeds from bond and term loan issuances                         3,290,800          889,273        4,293,262       2,226,385
   Proceeds from Gell Pharmaceuticals relating to the put option        217,236                -          448,802               -
   Principal payments on bond payable                                   (78,431)               -          (78,431)              -
   Proceeds received on subscriptions receivable                                               -                                -
   Advances from Scios Nova Inc.                                              -                -                -               - 
                                                                  --------------  ---------------  ---------------  --------------
         Net cash provided by financing activities                   16,645,598        1,200,653       55,121,422       2,704,782 
                                                                  --------------  ---------------  ---------------  --------------
Net increase (decrease) in cash and cash equivalents                (28,219,908)          94,146        6,639,156      (1,476,938)
CASH AND CASH EQUIVALENTS AT THE BEGINNING OF PERIOD                 39,118,595        2,468,772        4,259,531       4,039,856 
                                                                  --------------  ---------------  ---------------  --------------
CASH AND CASH EQUIVALENTS AT THE END OF PERIOD                    $  10,898,687   $    2,562,918   $   10,898,687   $   2,562,918 
                                                                  ==============  ===============  ===============  ==============
Supplemental disclosures of cash flow information:
    Interest paid, net of amount capitalized                      $     106,440   $       28,242   $      216,946   $      50,164

Noncash Investing and Financing Activities:
    Collateral transferred from unrestricted to restricted
      investments                                                 $   1,049,016   $      622,491   $    1,750,739   $   1,558,470
    Issued shares of common stock in lieu of cash bonus                    -                   -                -          28,209
    Issuances of common stock to executive officers                        -              51,200                -         236,850
</TABLE>

<TABLE>
<CAPTION>
                                                                                      JULY 14, 1993
                                                                                  (DATE OF INCEPTION) TO
                                                                                      JUNE 30, 1996
                                                                                      -------------
<S>                                                                             <C>          
CASH FLOWS FROM OPERATING ACTIVITIES:
   Net Income (Loss)                                                            $         (21,691,433)
   Adjustments to reconcile net income (loss) to net                                     
     cash provided by (used in) operating activities:                                                     
      Depreciation and amortization                                                         1,101,009
      Noncash compensation expense                                                          1,288,669
      Provision for loss related to advance to underwriter                                    175,000
      Preferred stock issued in exchange for technology acquired                         
         in the research and development stage                                                300,000
      Preferred stock issued in exchange for various expenses                            
         paid for by Scios Nova Inc. on behalf of the Company                                 245,225
   Changes in assets and liabilities:                                                    
      Licensing fee receivable                                                                      -
      Notes receivable                                                                        115,342
      Other current assets                                                                   (334,418)
      Other assets                                                                           (198,937)
      Accounts payable                                                                      2,737,299
      Advance from Gell Pharmaceuticals Inc.                                                  189,112
      Accrued expenses and other liabilities                                                1,018,393 
                                                                                ----------------------
         Net cash provided by (used in) operating activities                              (15,054,739)
                                                                                ----------------------
CASH FLOWS FROM INVESTING ACTIVITIES:                                                    
   Investment in purchases of property and equipment                                      (13,068,079)
   Maturities of short-term investments                                                    60,568,208
   Purchases of short-term investments                                                   (117,210,638)
   Restricted cash                                                                           (238,021)
                                                                                ----------------------
         Net cash provided by (used in) investing activities                              (69,948,530)
                                                                                ----------------------
CASH FLOWS FROM FINANCING ACTIVITIES:                                                    
   Proceeds from issuance of preferred stock                                                2,964,775
   Net proceeds from issuances of common stock                                             81,943,094
   Proceeds from bond and term loan issuances                                               9,282,239
   Proceeds from Gell Pharmaceuticals relating to the put option                            1,175,279
   Principal payments on bond payable                                                         (78,431)
   Proceeds received on subscriptions receivable                                              500,000
   Advances from Scios Nova Inc.                                                              115,000 
                                                                                ----------------------
         Net cash provided by financing activities                                         95,901,956 
                                                                                ----------------------
Net increase (decrease) in cash and cash equivalents                                       10,898,687
CASH AND CASH EQUIVALENTS AT THE BEGINNING OF PERIOD                                                - 
                                                                                ----------------------
CASH AND CASH EQUIVALENTS AT THE END OF PERIOD                                  $          10,898,687 
                                                                                ======================
                                                                                         
Supplemental disclosures of cash flow information:                                       
    Interest paid, net of amount capitalized                                    $             381,963
                                                                                         
Noncash Investing and Financing Activities:                                              
    Collateral transferred from unrestricted to restricted                               
      investments                                                               $           5,143,023
    Issued shares of common stock in lieu of cash bonus                                        28,209
    Issuances of common stock to executive officers                                           509,850
</TABLE>


SEE ACCOMPANYING NOTES TO CONSOLIDATED FINANCIAL STATEMENTS





                                       6
<PAGE>   7
                         GUILFORD PHARMACEUTICALS INC.
                                AND SUBSIDIARIES

                         (A DEVELOPMENT STAGE COMPANY)

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                 JUNE 30, 1996
                                  (UNAUDITED)

1.  BASIS OF PRESENTATION

        The consolidated financial statements included herein have been
prepared, without audit, pursuant to the rules and regulations of the
Securities and Exchange Commission.  Certain information and footnote
disclosures normally included in consolidated financial statements prepared in
accordance with generally accepted accounting principles have been condensed or
omitted pursuant to such rules and regulations.  These consolidated financial
statements should be read in conjunction with the audited financial statements
and notes thereto included in the Company's annual report on Form 10-K/A2 for
the year ended December 31, 1995.

        Except for the historical information contained in this Form 10-Q, the
matters discussed in the quarterly report are forward-looking statements.
These statements involve risks and uncertainties that could cause the actual
results to differ from predicted results.  Information concerning factors that
could affect the Company's financial results are set forth in the Company's
filings with the Securities and Exchange Commission including the Company's
registration statement on Form S-3 declared effective on March 21, 1996.

        In the opinion of the Company's management,  any adjustments contained
in the accompanying unaudited consolidated financial statements are of a normal
recurring nature, necessary to present fairly its financial position, results
of operations, changes in stockholders' equity and cash flows for the
respective periods as set forth in the Index to Financial Information.  Interim
results are not necessarily indicative of results for the full fiscal year.

2.      PRINCIPLES OF CONSOLIDATION

        The consolidated financial statements include the accounts of Guilford
Pharmaceuticals Inc, and its subsidiaries, all of which are wholly owned. All
significant intercompany transactions have been eliminated.

3.      EARNINGS PER SHARE

        The computation of both primary and fully diluted earnings per share
was based on the weighted average number of common shares outstanding during
the period adjusted to include, when their effect is dilutive, common stock
equivalents consisting of warrants, stock options and put rights. Both primary
and fully diluted earnings per share are the same for the three months ended
June 1996.





                                       7
<PAGE>   8
                         GUILFORD PHARMACEUTICALS INC.
                                AND SUBSIDIARIES

                         (A DEVELOPMENT STAGE COMPANY)

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

For the six months ended June 30, 1996, the computation of both primary and
fully diluted earnings per share exclude common stock equivalents since their
effect on earnings per share is antidilutive.

4.      EQUITY TRANSACTIONS

        On June 13, 1996, the Company entered into a Stock Purchase Agreement
with Rhone-Poulenc Rorer Inc. ("RPR Inc."). Under the terms of the agreement,
RPR Inc. purchased 187,687 shares of the Company's common stock, $.01 par value
per share, providing net proceeds of  $7.5 million to the Company.

5.      CONSULTING AGREEMENTS

        Effective as of April 18, 1996, the Company entered into two consulting
agreements, each providing for annual cash compensation in the amounts of
$115,000, $125,000, $135,000 and $145,000 over a term of four years. In
addition to such cash compensation, the Company has granted options to each
consultant to purchase up to 150,000 shares of its common stock, valid for 10 
years from issuance, with varying exercise prices and varying vesting
periods based on either the passage of time or based upon the achievement of
certain milestones. Certain milestones, if ever achieved, would result in
accelerated vesting of up to 100,000 of the aforementioned options for each
consultant based on the agreements.  During the second quarter, the Company
recognized $48,000 in cash compensation and $45,000 as deferred compensation
relating to that portion of the consulting agreements recognizable at June 30,
1996.  The Company expects that commencing in the third quarter of 1996 it will
be required to take noncash charges related to the aforementioned options which
under FAS 123 (Accounting for Stock Based Compensation) require compensation
expense to be recognized using a fair value based method.  As a result, the
Company expects it will charge to operations, in varying amounts per quarter
through 2001, between $2.1 million and $3.4 million.

6.      MARKETING, SALES AND DISTRIBUTION RIGHTS AND RELATED AGREEMENTS WITH
        RPR

        On June 13, 1996, the Company entered into a Marketing, Sales and
Distribution Rights Agreement and related agreements with RPR Inc. and
Rhone-Poulenc Rorer Pharmaceuticals Inc. ("RPR Pharm."; collectively with RPR
Inc., "RPR") granting RPR Pharm. worldwide marketing rights (excluding
Scandinavia) for GLIADEL(R) Wafer ("GLIADEL").  The Company received $15.0





                                       8
<PAGE>   9
                         GUILFORD PHARMACEUTICALS INC.
                                AND SUBSIDIARIES

                         (A DEVELOPMENT STAGE COMPANY)

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

million upon the signing of these agreements ($7.5 million as an equity
investment (see note 4) and $7.5 million as a non-refundable rights payment).
RPR Pharm. is obligated to make up to an additional $60.0 million in milestone
payments including $7.5 million in the form of an additional equity investment
only if the Company achieves certain key regulatory approvals.  Moreover, RPR
Pharm. may also fund up to $17 million for the development of a higher-dose
GLIADEL product and to fund certain additional clinical studies related to
GLIADEL. The Company will manufacture and supply GLIADEL to RPR Pharm. and will
receive a transfer price and royalties based on product sales. RPR Pharm. also
has a right of first offer to obtain exclusive rights to certain additional
oncology products that may be developed in the future using the Company's
proprietary biodegradable polymer implant polymer technologies.  In
consideration for these rights of first offer, RPR Pharm. has also agreed to
make certain additional research and development payments.

        Under the terms of its loan agreement with RPR, the Company has the
right to borrow up to an aggregate of $7.5 million, under certain conditions,
to expand the Company's manufacturing and related facilities.  Not earlier than
January 2, 1997, the Company may borrow $4.0 million from RPR under this loan
agreement and an additional $3.5 million no earlier than twelve nor later than
eighteen months following funding of the initial $4.0 million.  Any amounts
borrowed under this loan agreement are due five years from the date borrowed
and will carry an interest rate equal to the lowest interest rate paid by RPR
from time to time on its most senior indebtedness.

 7.     SHARE OPTION PLANS

        In May 1996, the Company's stockholders approved amendments to the
Company's 1993 Employee Share Option and Restricted Share Plan, as amended (the
"Employee Plan"), and the Directors' Stock Option Plan (the "Directors' Plan").
The Employee Plan was amended to increase the number of shares of common stock
available for issuance under the plan from 600,000 shares to 1,800,000 shares.
The Directors' Plan was amended to permit a director who is an officer or
employee or a stockholder of the Company that holds less than 20% of the
Company's stock to receive options under the Directors' Plan.





                                       9
<PAGE>   10
                         GUILFORD PHARMACEUTICALS INC.
                                AND SUBSIDIARIES

                         (A DEVELOPMENT STAGE COMPANY)

MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF
OPERATIONS

GENERAL

        Guilford Pharmaceuticals Inc. (together with its subsidiaries,
"Guilford" or the "Company") is a development stage biopharmaceutical company
engaged in the development of novel products in two principal areas: (i)
targeted and controlled drug delivery systems using proprietary biodegradable
polymers for the treatment of cancer and other diseases and (ii) therapeutic
and diagnostic products for neurological diseases and conditions.  Since
inception, the Company has received approximately $85.8 million in net cash
proceeds from sales of equity securities, of which approximately $17.9 million
and $42.9 million was received in August 1995 and March 1996, respectively, in
follow-on public offerings of common stock.  In addition to public equity
offerings, the Company has raised $12.1 million since inception (including
approximately $700,000 in cash proceeds from management and a founder/director)
in private sales of equity securities.  A substantial part of the Company's 
activities since inception has been devoted to raising capital, recruiting 
personnel, initiating product research programs and clinical trials, 
constructing and validating its GLIADEL manufacturing facility and preparing 
and filing an NDA for its lead product candidate, GLIADEL.

        The Company incurred net operating losses from its inception through
the first quarter of 1996. The Company realized net income in the second
quarter of 1996 due to a one-time non-refundable rights payment from RPR
Pharm.The Company expects to experience quarter-to-quarter and year-to- year
fluctuations in revenues, expenses, net income and net losses, some of which
may be significant.  The timing and extent of such fluctuations will depend, in
part, on the timing and receipt, if ever, of regulatory approvals for GLIADEL
and other product candidates and receipt of any future license fees, milestone
payments, transfer prices and royalties related to product sales. The Company
expects that expenses related to research and product development, preclinical
testing, clinical trials, regulatory matters, operations, manufacturing and
general and administrative expenses will continue to increase as the Company
seeks to commercialize GLIADEL in conjunction with its partners and to develop
its other potential products.  The Company's ability to achieve consistent
profitability will depend upon its ability, either alone or with others, to
develop its product candidates successfully, conduct clinical trials, obtain
required regulatory approvals, manufacture at reasonable cost and market its
product candidates and enter into collaborative arrangements and license
agreements on acceptable terms.





                                       10
<PAGE>   11
                         GUILFORD PHARMACEUTICALS INC.
                                AND SUBSIDIARIES

                         (A DEVELOPMENT STAGE COMPANY)

MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF
OPERATIONS

RESULTS OF OPERATIONS

        The Company recognized $7.5 million in revenues for the three months
ended June 30, 1996 compared to $13,000 for  the same period ended in 1995. For
the six months ended June 30, 1996 revenues totaled $7.6 million compared to
$13,000 for the same period ended in 1995. The increase in revenues for the
quarter is due to a one-time rights payment from RPR Pharm. as part of its
agreements with the Company (see note 6 of notes to consolidated financial
statements). For the six months ended June 30, 1996, $100,000 in licensing fee
revenue was received pursuant to the Company's Licensing and Distribution
Agreement with Orion Farmos related to the filing of Guilford's NDA for
GLIADEL.

        Research and development expenses increased to $3.6 million for the
three months ended June 30, 1996 compared to $2.1 million for the same period
ended in 1995. For the six months ended June 30, 1996 expenses increased to
$7.1 million compared to $3.6 million for the same period ended 1995. These
increases are primarily due to the expansion of the Company's research and
development programs, scale-up of its manufacturing capabilities and clinical
research related to the Treatment IND for GLIADEL and Phase II(b) clinical
trials for DOPASCAN(TM) injection which resulted in an increase in the number
of employees, personnel related costs, laboratory supplies and consumables
along with outside services including contract research and consulting.

        General and administrative expenses increased to $1.9 million for the
three months ended June 30, 1996 compared to $1.0 million for the same period
ended in 1995. For the six months ended June 30, 1996 expenses increased to
$3.2 million compared to $1.8 million for the same period ended 1995. The
increase is primarily the result of an increase in the number of employees and
personnel related costs required to support the Company's ongoing research and
development activities, royalty payments and outside services related to patent
activities and public company costs.

        Interest income increased to $795,000 for the three months ended June
30, 1996 compared to $146,000 for the same period ended in 1995. For the six
months ended June 30, 1996 interest income increased to $1.2 million compared
to $324,000 for the same period ended in 1995. The increase is primarily due to
an increase in the average invested capital resulting from equity offerings and
cash received pursuant to the Company's agreements with RPR. Interest expense
increased to $116,000 for the three months ended June 30, 1996 compared to
$33,000 for the same period in 1995.  For the six months ended June 30, 1996
interest expense increased to $187,000 compared to $71,000 for the





                                       11
<PAGE>   12
                         GUILFORD PHARMACEUTICALS INC.
                                AND SUBSIDIARIES

                         (A DEVELOPMENT STAGE COMPANY)

MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF
OPERATIONS

same period ended 1995. The increase is primarily related to borrowings under
the December 1994 loan agreement with Signet Bank providing for the
construction of manufacturing, administrative and research and development
facilities and for the purchase of related equipment.

     The Company expects that commencing in the third quarter of 1996 it will
be required to take noncash charges related to stock options granted to two
consultants which under FAS 123 (Accounting for Stock Based Compensation) 
require compensation expense to be recognized using a fair value based method. 
As a result, the Company expects it will charge to operations in varying
amounts per quarter through 2001, between $2.1 million and $3.4 million (see
note 5 of notes to consolidated financial statements).

LIQUIDITY AND CAPITAL RESOURCES

     The Company's cash and short-term investments were $67.8 million at June
30, 1996.  Included in this amount is $5.1 million of restricted cash held as
collateral with respect to the Company's indebtedness.  The Company has
incurred a significant accumulated deficit to date and may continue to incur
periodic operating losses.  However, the Company believes that its current
working capital together with an additional $20 million milestone payment
expected from RPR Pharm. upon any approval by the FDA of the Company's GLIADEL
NDA will be adequate to fund operations over at least the next two years.  To
the extent necessary, the Company may be required to raise additional capital
through a combination of public and private financings, collaborative or other
research and development agreements, commercialization and marketing
arrangements with corporate partners or other potential sources.  The Company's
ability to raise future capital on acceptable terms is dependent on onditions
in the public or private equity markets and the performance of the Company as
well as the overall performance of other companies in the biopharmaceutical and
biotechnology sectors.  There can be no assurance that required future
financing arrangements will be available on acceptable terms, or at all.

        Capital expenditures of $7.0 million were incurred in the six months
ended June 30, 1996 compared to $1.9 million for the same period ended June 30,
1995.  These capital expenditures were related to the construction of  research
and development laboratories, expansion of the Company's GLIADEL manufacturing
facility and administrative offices. Additionally, such expenditures included
amounts to purchase capital equipment and computer software to support the
Company's activities.  The Company has utilized its available borrowings under
the existing $8.0 million loan





                                       12
<PAGE>   13
                         GUILFORD PHARMACEUTICALS INC.
                                AND SUBSIDIARIES

                         (A DEVELOPMENT STAGE COMPANY)

MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF
OPERATIONS


agreement with Signet Bank and will continue to finance certain in-process
tenant improvements related to the construction of research and development
laboratories and other related areas under the additional $4.2 million term
loan obtained from Signet Bank in February, 1996.  At June 30, 1996, the
Company had drawn down $1.3 million under this term loan and anticipates
drawing down the remainder by the end of fiscal 1996. The Company expects
additional capital will be required to provide for manufacturing plant capacity
expansion and research and development laboratories. Such future capital
funding is expected to come under the terms of its loan agreement with RPR Inc.
(see note 6 of notes to consolidated financial statements).  Under the
Agreement, the Company has the right to borrow up to an aggregate of $7.5
million under certain conditions to expand the Company's manufacturing and
related facilities.  The Company has completed negotiations and expects to
finalize in the third quarter a $5.0 million lease financing arrangement for
the funding of capital equipment.  Such financing is expected to provide for
the Company's capital equipment needs at least through June 30, 1997.  While
the Company expects the aforementioned sources to be available as described,
the Company may decide to use current cash resources for such purposes on an as
needed basis.





                                       13
<PAGE>   14
                         GUILFORD PHARMACEUTICALS INC.
                                AND SUBSIDIARIES

                         (A DEVELOPMENT STAGE COMPANY)

PART II. - OTHER INFORMATION

Item 1.     Legal Proceedings:
            None

Item 2.     Changes in Securities:
            None

Item 3.     Defaults in Senior Securities:
            None

Item 4.     Submission of Matters to a Vote of Security Holders:

            The Company's Annual Meeting of Stockholders was held on May 21,
            1996.  The following individuals were elected to the Company's
            Board of Directors to hold office for the ensuing year:

<TABLE>
<CAPTION>
NOMINEE                                            FOR                         AGAINST
- -------                                            ---                         -------
<S>                                              <C>                            <C>
Craig R. Smith, M.D.                             6,723,276                      3,800
Solomon H. Snyder, M.D.                          6,722,489                      4,587
W. Leigh Thompson, M.D., Ph.D.                   6,723,276                      3,800
Richard L. Casey                                 6,723,276                      3,800
Elizabeth M. Greetham                            6,723,276                      3,800
George L. Bunting, Jr.                           6,723,276                      3,800
</TABLE>

In addition the following proposals were approved as follows:

Proposal to amend the Company's 1993 Employee Share Option and Restricted Share
Plan:

<TABLE>
<CAPTION>
In Favor                  Opposed                      Abstained                     Broker non-votes
- --------                  -------                      ---------                     ----------------
<S>                      <C>                             <C>                            <C>
3,820,916                197,248                         6,528                          2,134,138
</TABLE>





                                       14
<PAGE>   15
                         GUILFORD PHARMACEUTICALS INC.
                                AND SUBSIDIARIES

                         (A DEVELOPMENT STAGE COMPANY)

PART II. - OTHER INFORMATION

Proposal to amend the Company's Directors' Stock Option Plan:

<TABLE>
<CAPTION>
In Favor                   Opposed                     Abstained                     Broker non-votes
- --------                   -------                     ---------                     ----------------
<S>                          <C>                           <C>                           <C>
4,455,820                    35,711                        10,807                        2,134,138
</TABLE>

Proposal to ratify the stock option grant to Solomon H. Snyder, M.D.:

<TABLE>
<CAPTION>
In Favor                  Opposed                      Abstained                     Broker non-votes
- --------                  -------                      ---------                     ----------------
<S>                       <C>                          <C>                               <C>
4,315,692                 174,146                      12,500                            2,134,138
</TABLE>

Proposal to ratify the stock option awards to Richard L. Casey and John H.
Newman:

<TABLE>
<CAPTION>
In Favor                  Opposed                      Abstained                     Broker non-votes
- --------                  -------                      ---------                     ----------------
<S>                       <C>                           <C>                             <C>
4,292,190                 197,248                       12,900                          2,134,138
</TABLE>

Proposal to ratify the selection of KPMG Peat Marwick as the Company's
independent auditors for  the fiscal year ending December 31, 1996:

<TABLE>
<CAPTION>
In Favor                  Opposed                       Abstained
- --------                  -------                       ---------
<S>                       <C>                             <C>
6,717,184                 3,700                           6,192
</TABLE>

Item 5.          Other Information:
                 None

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

                 (a)   Exhibits:

Exhibit No.            Description
- -----------            -----------

10.40                  Marketing, Sales and Distribution Rights Agreement
                       between RPR Pharm., the Company and GPI Holdings, Inc.,
                       dated June 13, 1996





                                       15
<PAGE>   16
                         GUILFORD PHARMACEUTICALS INC.
                                AND SUBSIDIARIES

                         (A DEVELOPMENT STAGE COMPANY)

PART II. - OTHER INFORMATION

10.41        Manufacturing and Supply Agreement between RPR Pharm. and the
             Company, dated June 13, 1996

10.42        Stock Purchase Agreement between the Company and RPR Inc., dated
             June 13, 1996

10.43        Loan Agreement between the Company and RPR Inc., dated June 13,
             1996

10.44        Amendment to the Company's 1993 Employee Share Option and
             Restricted Share Plan, as amended

10.45        Amendment to the Company's Directors' Stock Option Plan

11.1         Statement Re: Computation of Per Share Earnings

27.2         Financial Data Schedule

             (b)   Report on Form 8-K
                   None





                                       16
<PAGE>   17
                         GUILFORD PHARMACEUTICALS INC.
                                AND SUBSIDIARIES

                         (A DEVELOPMENT STAGE COMPANY)

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.



                                  
                                    Guilford Pharmaceuticals Inc.
                                  
                                  
                                  
                                  
Date:     August 14, 1996         
                                    /s/ Craig R. Smith, M.D.                   
                                    -------------------------------------------
                                    Craig R. Smith, M.D.
                                    President and CEO
                                  
                                  
                                  
Date:     August 14, 1996           /s/ Andrew R. Jordan 
                                    -------------------------------------------
                                    Andrew R. Jordan
                                    Vice President and Chief Financial Officer
                                    (Principal Accounting Officer)
                                  




                                       17

<PAGE>   1
                                                                  EXHIBIT 10.40



                      -----------------------------------





               MARKETING, SALES AND DISTRIBUTION RIGHTS AGREEMENT




                                    BETWEEN




                   RHONE-POULENC RORER PHARMACEUTICALS INC.,




                               GPI HOLDINGS, INC.




                                      AND




                         GUILFORD PHARMACEUTICALS INC.




                      -----------------------------------

<PAGE>   2
                               TABLE OF CONTENTS


<TABLE>
<CAPTION>
SECTION                                                                                                          PAGE
- -------                                                                                                          ----
<S>      <C>                                                                                                        <C>


I.       Definitions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   2

         A.      "Act"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   2
         B.      "Affiliate"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   2
         C.      "Bankruptcy Event" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   2
         D.      "Change in Control"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   3
         E.      "FDA"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   3
         F.      "FDA Standards"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   3
         G.      "Field"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   3
         H.      "GLIADEL Product"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   3
         I.      "GPI License Agreements" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   4
         J.      "High Dose GLIADEL Product"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   4
         K.      "Improvement"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   4
         L.      "Know-How" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   4
         M.      "Licensed Trademark" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   4
         N.      "Loan Agreement" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   4
         O.      "M.I.T./Scios Nova License Agreement"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   5
         P.      "NDA"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   5
         Q.      "Net Sales"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   5
         R.      "Other PCPP:SA/BCNU Products"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   5
         S.      "Patent(s)"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   5
         T.      "Person" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6
         U.      "Process Description"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6
         V.      "Product"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6
         W.      "Regulatory Approval"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6
         X.      "Regulatory Filings" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6
         Y.      "Scios Nova/GPI License Agreement" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   6
         Z.      "Stock Purchase Agreement" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   7
         AA.     "Supply Agreement" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   7
         AB.     "Territory"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   7
         AC.     "Valid Claim"  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   7

II.      Disclosures  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   7

III.     Marketing and Distribution Rights; Regulatory Approvals; Milestone Payments; Further Consideration
         for Rights; Records and Audit Rights; Development; Operations and Governance Committees  . . . . . . . .   8
</TABLE>

<PAGE>   3
<TABLE>
<S>      <C>                                                                                                       <C>
         A.      Right to Market, Distribute and Sell the Product . . . . . . . . . . . . . . . . . . . . . . . .   8
         B.      Research and Development; Regulatory Approvals . . . . . . . . . . . . . . . . . . . . . . . . .  10
         C.      Ex-U.S. Regulatory Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  11
         D.      Milestone Payments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  14
         E.      Net Sales Fees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  16
         F.      Records and Audit Rights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  17
         G.      Governance Committee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  19
         H.      Operations Committee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  20
         I.      Joint Development Activities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  21
         J.      Right of First Offer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  21
         K.      Research and Development Fee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  23

IV.      General Terms and Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  25

         A.      Confidentiality; Press Releases  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  25
         B.      Representations and Warranties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  27
         C.      Indemnification; Product Liability Claims  . . . . . . . . . . . . . . . . . . . . . . . . . . .  31 
         D.      Term . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  34
         E.      Events of Default  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  35
         F.      Remedies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  36
         G.      Force Majeure  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  37
         H.      Inventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  37
         I.      Infringement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  40
         J.      Certain Covenants of GPI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  42
         K.      Certain Covenants of RPR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  44

V.       Other Covenants  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  45

         A.      HSR Filings  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  45
         B.      Assignment of GLIADEL Product NDA  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  45

VI.      Miscellaneous  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  46

         A.      Independent Contractor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  46
         B.      Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  47
         C.      Binding Effect; Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  47
         D.      Amendments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  47
         E.      Waivers  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  47
         F.      Notices  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  47
         G.      Counterparts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  48
         H.      Headings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  48
         I.      Governing Law  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  49
         J.      Severability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  49
         K.      Exhibits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  49
         L.      Disputes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  49
</TABLE>

<PAGE>   4
<TABLE>
         <S>     <C>                                                                                               <C>
         M.      Interest on Overdue Payments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  50
         N.      Entire Agreement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  50
</TABLE>

<PAGE>   5
               MARKETING, SALES AND DISTRIBUTION RIGHTS AGREEMENT

         MARKETING, SALES AND DISTRIBUTION RIGHTS AGREEMENT ("Agreement") dated
as of June 13, 1996 ("Effective Date"), between RHONE-POULENC RORER
PHARMACEUTICALS INC., a Delaware corporation with its principal office at 500
Arcola Road, Collegeville, Pennsylvania 19426 ("RPR"), on the one hand, and GPI
HOLDINGS, INC., a Delaware corporation with its principal office at 222
Delaware Avenue, P.O. Box 2306, Wilmington, Delaware 19899 ("GPI Holdings") and
GUILFORD PHARMACEUTICALS INC., a Delaware corporation with its principal office
at 6611 Tributary Street, Baltimore, Maryland 21224 ("GPI"), on the other hand.

         WHEREAS, GPI Holdings and GPI (collectively, "Guilford"), on the one
hand, and RPR, on the other hand, desire to enter into a strategic alliance
pursuant to which, among other things:

                 (i)  GPI Holdings will grant to RPR the exclusive right
throughout the Territory (defined below) to market, advertise, promote, sell
and distribute the Product (defined below) for use in the Field (defined
below);

                 (ii)  GPI will assign to RPR the New Drug Application for the
GLIADEL Product if and when approved by the FDA (defined below);

                 (iii)  RPR will use commercially reasonable efforts to obtain
Regulatory Approval (defined below) for the GLIADEL Product (defined below)
throughout the Territory for use in the Field in accordance with the provisions
of Article III of this Agreement, and if, as and when obtained, to market,
advertise, promote, sell and distribute the GLIADEL Product throughout the
Territory for use in the Field;

                 (iv)  GPI will manufacture and supply the Product to RPR;

                 (v)  Guilford and RPR will collaborate on the development of
certain further PCPP:SA/BCNU products for use in the Field, including products
with BCNU doses higher than 3.85%, all of which will be included within the
grant of exclusive marketing, advertising, promotion, sale and distribution
rights

<PAGE>   6
in the Territory for use in the Field made by GPI Holdings to RPR under this
Agreement; and

                 (vi)  GPI Holdings will grant to RPR a right of first offer
covering all future drug-polymer cancer chemotherapeutic products which
Guilford may develop during the term of this Agreement;

all on the terms and conditions contained in this Agreement and the Supply
Agreement (defined below);

         NOW THEREFORE, in consideration of the mutual covenants and
consideration set forth herein, the parties hereto, intending to be legally
bound, hereby agree as follows:

                                   ARTICLE I

I.       DEFINITIONS.

         A.      "ACT" shall mean the Federal Food, Drug and Cosmetic Act, as
amended, and the regulations promulgated under such Act.

         B.      "AFFILIATE" shall mean, when used with respect to a Person,
any other Person directly or indirectly controlling, controlled by, or under
common control with the subject Person.  For purposes of this Agreement,
"control" means the direct or indirect ownership of over 50% of the outstanding
voting securities of a Person, or the right to receive over 50% of the profits
or earnings of a Person, or the right to control the policy decisions of a
Person.

         C.      "BANKRUPTCY EVENT" shall mean the Person in question becomes
insolvent, or voluntary or involuntary proceedings by or against such Person
are instituted in bankruptcy or under any insolvency law, or a receiver or
custodian is appointed for such Person, or proceedings are instituted by or
against such Person for corporate reorganization or the dissolution of such
Person, which proceedings, if involuntary, shall not have been dismissed within
sixty (60) days after the date of filing, or such Person makes an assignment
for the benefit of its creditors, or substantially all of the assets of such
Person are seized or attached and not released within sixty (60) days
thereafter.





                                       2

<PAGE>   7
         D.      "CHANGE IN CONTROL" shall mean with respect to any Person:

                 1.       The liquidation or dissolution of such Person or the
sale or other transfer by such Person (excluding transfers to subsidiaries) of
all or substantially all of its assets, if the same results in a change in the
ultimate beneficial ownership of the business conducted by such Person; or

                 2.       The occurrence of a tender offer, stock purchase,
other stock acquisition, merger, consolidation, recapitalization, reverse
split, sale or transfer of assets or other transaction, as a result of which
any Person or group (as such terms are used in and under Section 13(d) of the
Securities Exchange Act of 1934, as amended) (i) becomes the beneficial owner
(as defined in Rule 13-d under such Act), directly or indirectly, of securities
of such Person representing more than 30% of the common stock of such Person
or representing more than 30% of the combined voting power with respect to the
election of directors (or members of any other governing body) of such Person's
then outstanding securities, (ii) obtains the ability to appoint a majority of
the Board of Directors (or other governing body) of such Person, or (iii)
obtains the ability to direct the operations or management of such Person or
any successor to such Person's business.

         E.      "FDA" shall mean the Food and Drug Administration of the
United States Department of Health and Human Services, or any successor agency
thereto.

         F.      "FDA STANDARDS" shall mean the Act, the facility license
requirements and the Current Good Manufacturing Practice regulations of the FDA
applicable to the Product or any manufacturing facility of GPI, and all
relevant guidelines of the FDA.

         G.      "FIELD" shall mean the treatment of tumors of the central
nervous system and treatment of cerebral edema.

         H.      "GLIADEL PRODUCT" shall mean Guilford's GLIADEL(R) wafer,
PCPP:SA with 3.85% BCNU, and any and all Improvements thereto.





                                       3

<PAGE>   8
         I.      "GPI LICENSE AGREEMENTS" shall mean the M.I.T./Scios Nova
License Agreement and the Scios Nova/GPI License Agreement.

         J.      "HIGH DOSE GLIADEL PRODUCT" shall mean any PCPP:SA product
with a BCNU dose higher than 3.85% which is (i) reasonably expected to have a
more advantageous efficacy profile than the GLIADEL Product and (ii) now or
hereafter owned or controlled by Guilford, and all Improvements to any such
product.  As of the Effective Date, Guilford is contemplating the development
of PCPP:SA with 20% BCNU for use in the Field.

         K.      "IMPROVEMENT" to a product shall mean any and all inventions,
discoveries, developments, modifications and improvements, whether or not
patented or patentable, to such product.

         L.      "KNOW-HOW" shall mean all scientific and technical data,
instructions, processes, formulae, specifications, ingredient sources,
manufacturing procedures, methods and other information relating to the design,
composition, formulation, pre-clinical evaluation, clinical evaluation,
manufacture, use, sale, packaging, formulation or administration of the
Product, including, but not limited to NDAs, pharmacological, toxicological,
analytical, stability and clinical data, specifications and drug master files
and/or health registration dossiers and any other premarket application or
registration, owned or controlled at any time during the term hereof by either
party.

         M.      "LICENSED TRADEMARK" shall mean GPI Holdings' GLIADEL(R)
trademark, and any trademark(s) selected pursuant to the provisions of Section
III(A)(3), and all goodwill associated with all such trademark(s).

         N.      "LOAN AGREEMENT" shall mean the Loan Agreement, dated as of
even date herewith, between GPI and Rhone-Poulenc Rorer Inc., a Pennsylvania
corporation, the form of which is attached hereto and made a part hereof as
Exhibit B, together with all promissory notes, the pledge agreement, the second
mortgage and all other instruments referred to in or contemplated by such Loan
Agreement.





                                       4

<PAGE>   9
         O.      "M.I.T./SCIOS NOVA LICENSE AGREEMENT" shall mean the License
Agreement, dated as of July 15, 1988, between Massachusetts Institute of
Technology ("M.I.T.") and the predecessor in interest to Scios Nova Inc., as
amended, between M.I.T. and Scios Nova Inc.  A true and complete copy of the
M.I.T./Scios Nova License Agreement, with certain financial terms redacted, is
attached hereto and made a part hereof as Exhibit E.

         P.      "NDA" shall mean a "New Drug Application," as defined in the
Act, and all supplements thereto.

         Q.      "NET SALES" shall mean, with respect to the Product, the gross
revenues derived from the sale or other transfer of the Product by RPR or its
Affiliates or non-Affiliated distributors appointed by RPR and permitted under
this Agreement to an un-Affiliated third party end-user at the end of the
commercial distribution chain, (A) after subtracting all bona fide trade and
cash discounts, volume discounts, rebates, to the extent actually paid, allowed
or incurred on such sales or transfers, and (B) taking into account all bona
fide claims, refunds, returns and recalls of the Product.

         R.      "OTHER PCPP:SA/BCNU PRODUCTS" shall mean all PCPP:SA-based
polymer products containing BCNU, other than the GLIADEL Product, that are now
or hereafter during the term of this Agreement owned or controlled by Guilford,
including, without limitation, High Dose GLIADEL Product, and all Improvements
to any of the foregoing.

         S.      "PATENT(S)" shall mean (i) all of the patents and applications
for patents that are identified in Exhibit A, all patents which may be granted
thereon, any U.S. or foreign counterparts thereof, as well as all
continuations, continuations-in-part, divisions, reissues, renewals,
reexaminations, extensions, patents of addition and patents of importation
thereof; (ii) any patent application of Guilford or any of its Affiliates
related to or based on any Know-How of Guilford or any of its Affiliates and
related to the Product that is developed during the term of this Agreement, all
patents which may be granted thereon, any foreign counterparts thereof, as well
as all continuations, continuations-in-part, divisions, reissues, renewals,
reexaminations, extensions, patents of addition and patents of importation
thereof; and (iii) all such patent





                                       5

<PAGE>   10
applications and patents, directly or indirectly owned, licensed or controlled
by Guilford or any of its Affiliates, which but for the rights granted herein,
the manufacture, use or sale of the Product would infringe a Valid Claim.

         T.      "PERSON" shall mean any corporation, partnership, joint
venture, other entity or natural person.

         U.      "PROCESS DESCRIPTION" shall mean, with respect to the Product,
manufacturing and control procedures and specifications, as well as such other
Know-How, technical specifications, instructions, processes and other
intellectual property and information which Guilford possesses and owns or
controls, and as shall be necessary in order to allow RPR to manufacture and/or
have manufactured for it the Product.  Such Process Descriptions shall be
sufficiently clear and detailed that it can be readily followed and carried out
by a skilled Person.

         V.      "PRODUCT" shall mean the GLIADEL Product and all Other
PCPP:SA/BCNU Products.

         W.      "REGULATORY APPROVAL" shall mean, with respect to any country,
(i) filing for and receipt of all governmental and regulatory registrations and
approvals (including, but not limited to, approvals of all final Product
labelling) required for the marketing and sale of the Product for the
indication for which it is being marketed in such country, and (ii) the receipt
of reimbursement approvals and a reimbursement price acceptable to the
Operations Committee from the national security system or other appropriate
governmental or regulatory authorities in such country, except in those
countries where such reimbursement approvals and reimbursement price are not
granted by a governmental or regulatory authority (such as the United States,
as of the Effective Date).

         X.      "REGULATORY FILINGS" shall mean all applications, filings,
materials, studies, data and documents of any nature whatsoever filed with,
prepared in connection with or necessary to support any Regulatory Approval
process in any country or territory.

         Y.      "SCIOS NOVA/GPI LICENSE AGREEMENT" shall mean the License
Agreement, dated as of March 14, 1994, as amended,





                                       6

<PAGE>   11
between Scios Nova Inc. and GPI, as assigned to GPI Holdings.  A true and
complete copy of the Scios Nova/GPI License Agreement, with certain financial
terms redacted, is attached hereto and made a part hereof as Exhibit F.

         Z.      "STOCK PURCHASE AGREEMENT" shall mean the Stock Purchase
Agreement, dated as of even date herewith, between GPI and RPR, the form of
which is attached hereto and made a part hereof as Exhibit C.

         AA.     "SUPPLY AGREEMENT" shall mean the Manufacturing and Supply
Agreement, dated as of even date herewith, between GPI and RPR, the form of
which is attached hereto and made a part hereof as Exhibit D.

         BB.     "TERRITORY" shall mean the entire world, excluding Denmark,
Finland, Norway and Sweden.

         CC.     "VALID CLAIM" shall mean a claim in any issued and unexpired
Patent which has not been withdrawn, canceled, abandoned or disclaimed or held
invalid by a final decision by a court or other appropriate body of competent
jurisdiction from which no appeal is available.

                                   ARTICLE II

II.      DISCLOSURES.

         Guilford expressly understands and acknowledges that RPR is currently
and in the future will evaluate other business opportunities and products for
the treatment of all types of cancer.  RPR in its sole discretion may
participate in these markets alone or in other business or research
arrangements with third parties, both now and during the term of this
Agreement, provided that during the term of this Agreement neither RPR nor any
of its Affiliates will (a) negotiate with parties other than Guilford
respecting any targeted and controlled cancer chemotherapeutic in the Field
other than the Products, or (b) develop, market, sell or distribute any
targeted and controlled cancer chemotherapeutic in the Field other than the
Products.  Notwithstanding the foregoing sentence, nothing in this Agreement
shall prevent RPR from exploiting gene or cell therapy for cancers in the
Field, as well as generally.  Guilford





                                       7

<PAGE>   12
acknowledges that the consideration provided under this Agreement is complete
and adequate consideration for Guilford entering this Agreement.


                                  ARTICLE III

III.     MARKETING AND DISTRIBUTION RIGHTS; REGULATORY APPROVALS; MILESTONE
         PAYMENTS; FURTHER CONSIDERATION FOR RIGHTS; RECORDS AND AUDIT RIGHTS;
         DEVELOPMENT; OPERATIONS AND GOVERNANCE COMMITTEES.

         A.      RIGHT TO MARKET, DISTRIBUTE AND SELL THE PRODUCT.

                 1.       Subject to the terms and conditions of this
Agreement, GPI Holdings hereby grants to RPR, during the term of this
Agreement, the exclusive right to use, market, advertise, promote, distribute
and sell the Product throughout the Territory for use in the Field.
Notwithstanding the foregoing, Guilford shall have the right to discuss and
publish matters relating to the Product for investor relations, financial,
scientific, medical and other legitimate business purposes, except that all
such scientific and medical publications and/or presentations at scientific and
medical conferences shall be coordinated in advance through the Operations
Committee.  All printed advertising and promotional materials relating to
Product manufactured by GPI shall include a statement identifying GPI as the
manufacturer of such Product.

                 2.       In consideration for the amounts paid by RPR to
Guilford under this Agreement, GPI Holdings hereby grants to RPR, and RPR
hereby accepts, an exclusive right and license, with the right to grant
sublicenses, to use the Licensed Trademark during the term of this Agreement
solely in connection with the use, marketing, advertising, promotion,
distribution and sale of the Product throughout the Territory.  During the term
of this Agreement, other than as permitted in the second sentence of Section
III(A)(1), except to the extent necessary to perform under this Agreement and
the Supply Agreement, and except for intragroup licenses between GPI Holdings
and GPI for corporate administrative purposes, Guilford shall not itself use
the Licensed Trademark or grant to any other Person any rights to use the
Licensed Trademark in the Territory.  During the term of this Agreement, RPR
shall not use the Licensed Trademark or authorize





                                       8

<PAGE>   13
any of its sublicensees to use the Licensed Trademark for any purpose other
than in connection with the use, marketing, advertising, promotion,
distribution and sale of the Product throughout the Territory.  GPI Holdings
represents and warrants that it is the owner of the entire right, title and
interest in, to and under the Licensed Trademark and the goodwill associated
with the Licensed Trademark.  RPR shall use the Licensed Trademark in
marketing, advertising, promoting, distributing and selling the Product unless
RPR is prohibited from doing so in any country or jurisdiction pursuant to any
law, rule, order or regulation, in which case the Operations Committee shall
select the trademark(s) to be used by RPR in marketing, advertising, promoting,
distributing and selling the Product in such particular country or
jurisdiction, which trademark(s) shall be owned by GPI Holdings, and RPR shall
have an exclusive right and license, with the right to grant sublicenses, to
use such trademark(s) during the term of this Agreement solely in connection
with the use, marketing, advertising, promotion, distribution and sale of the
Product throughout the Territory.  During the term of this Agreement, other
than as permitted in the second sentence of Section III(A)(1) and the second
sentence of this Section III(A)(2) above, Guilford shall not itself use any
such trademark(s) or grant to any other Person any rights to use any such
trademark(s) in the Territory.  During the term of this Agreement, RPR shall
not use any such trademark(s) or authorize any of its sublicensees to use any
such trademark(s) for any purpose other than in connection with the use,
marketing, advertising, promotion, distribution and sale of the Product
throughout the Territory.

                 3.       RPR shall use commercially reasonable efforts to
market, sell and distribute the Product and maximize sales of the Product
throughout the Territory for use in the Field in accordance with the provisions
of this Article III.  In so doing, RPR shall have the right to grant one or
more exclusive or non-exclusive marketing, sales, sales agency and/or
distribution rights, with respect to any rights conferred upon RPR under this
Agreement, for one or more countries within the Territory, to (i) any
Affiliate, without the need to obtain the prior written consent of GPI
Holdings, or (ii) any non-Affiliated third party, after receiving the prior
written consent of GPI Holdings, which consent shall not be unreasonably
withheld or delayed.  Any permitted grant by RPR of marketing, sales, sales
agency and/or





                                       9

<PAGE>   14
distribution rights shall be pursuant to a written agreement, the terms and
conditions of which shall be consistent with those of this Agreement, and a
true and complete copy of which shall be immediately supplied to Guilford upon
execution and delivery.  To the extent RPR or any of its Affiliates receives
cash and/or other consideration for the grant of such rights (not including (i)
any amount payable based upon sales of Product generated by the grantee, and
(ii) any consideration derived from the grantee performing research and
development or obtaining Regulatory Approvals with respect to the Product) in a
particular country over and above the amount RPR is obligated to pay to GPI
Holdings under Section III(D)(6) of this Agreement with respect to such
country, RPR shall immediately upon granting such rights pay or provide to GPI
Holdings 50% of such excess cash and/or consideration.

         B.      RESEARCH AND DEVELOPMENT; REGULATORY APPROVALS.

                 1.       GPI shall, at its sole cost and expense, use
commercially reasonable efforts to conduct those clinical trials and studies
and undertake such other steps and actions as shall be reasonably necessary to
obtain, as soon as is reasonably practicable, Regulatory Approval of the
GLIADEL Product for the indication of form(s) of malignant glioma, including
glioblastoma multiforme (unqualified by any limitation to the recurrent form(s)
of malignant glioma), in the United States.  Upon mutual agreement, RPR may
assist GPI in the performance of any such trials or studies, or RPR may itself
perform any such trials or studies; and in either case the out-of-pocket
expenses borne by RPR in assisting in or conducting such trials or studies
shall be deductible by RPR from its milestone payment obligations to GPI
Holdings set forth in Section III(D) or otherwise reimbursed by GPI.  GPI will
keep RPR informed of its progress toward obtaining such Regulatory Approval in
the United States.  If GPI ceases active pursuit of such Regulatory Approval in
the United States, RPR shall be given notice of GPI's decision to cease active
pursuit of such Regulatory Approval and RPR shall have the right to use all
Regulatory Filings, submissions, approvals, information and data regarding the
GLIADEL Product that is in the possession or control of GPI for all purposes
consistent with the provisions of this Agreement.  GPI acknowledges that RPR's
right to pursue such Regulatory Approval in the United States in no way





                                       10

<PAGE>   15
relieves GPI of its obligations to pursue such Regulatory Approval.

                 2.       If the U.S. Regulatory Approval of the GLIADEL
Product for the indication of form(s) of malignant glioma, including
glioblastoma multiforme (unqualified by any limitation to the recurrent form(s)
of malignant glioma), is a conditional approval, RPR shall use commercially
reasonable efforts to conduct those clinical trials and studies and undertake
such other steps and actions as may be required by FDA in connection with such
conditional approval.  RPR shall be responsible for paying the costs and
expenses of such trials, studies, steps and actions provided, however, that RPR
shall receive a credit in the amount of fifty percent (50%) of all costs and
expenses incurred by RPR in performing such trials, studies, steps and actions,
which credit may be applied against Net Sales Fees (defined in Section III(E))
and Research and Development Fees (defined in Section III(K)) payable by RPR
under this Agreement until fully applied.

                 3.       Following U.S. Regulatory Approval of the GLIADEL
Product for the indication of form(s) of malignant glioma, including
glioblastoma multiforme (unqualified by any limitation to the recurrent form(s)
of malignant glioma), RPR shall use commercially reasonable efforts to conduct
any Post Marketing Safety Surveillance Studies as may be required by FDA.  RPR
shall be responsible for paying the costs and expenses of such studies.

                 4.       During the term of this Agreement, each party shall
have the right to review and comment (provided that such right is exercised in
a prompt manner) on strategies and protocols of the clinical trials and studies
and regulatory submissions made by the other party related to the GLIADEL
Product for the indication of the treatment of form(s) of malignant glioma in
the United States.

         C.      EX-U.S. REGULATORY APPROVALS.

                 1.       With respect to Japan, within the one year period
commencing upon the Effective Date, RPR shall conduct an initial feasibility
study of developing and obtaining Regulatory Approval of the GLIADEL Product
for the indication of form(s) of malignant glioma, including glioblastoma
multiforme, in Japan.  Such





                                       11

<PAGE>   16
feasibility study shall include a consideration of the possibility of
technology transfer to and of sourcing components and/or final product directly
inside Japan.  If based upon that study RPR concludes that development and
Regulatory Approval of the GLIADEL Product for the indication of form(s) of
malignant glioma, including glioblastoma multiforme, in Japan can be secured
within a reasonable time frame and without the necessity of reproducing all of
the preclinical studies as normally required by the Japanese Regulatory
Authorities, RPR shall sponsor and fund the development and testing of the
GLIADEL Product and seek to obtain Regulatory Approval of the GLIADEL Product
for the indication of form(s) of malignant glioma, including glioblastoma
multiforme, in Japan, either by itself or, subject to prior written consent of
GPI Holdings, which shall not be unreasonably withheld or delayed, with a
partner selected by RPR.  Any such collaboration or other arrangement between
RPR and such partner for the development of the GLIADEL Product in Japan shall
be pursuant to a written agreement, the terms and conditions of which shall be
consistent with those of this Agreement, and a true and complete copy of which
shall be promptly provided to Guilford upon execution and delivery.  The
obligations of RPR to pay consideration to GPI Holdings contemplated by this
Agreement with respect to the obtaining of Regulatory Approval in Japan and the
marketing and distribution of the GLIADEL Product in Japan shall continue to
apply.  In addition, to the extent RPR or any of its Affiliates receives cash
and/or other consideration for the grant of such rights (not including (i) any
amount payable based upon sales of Product generated by the grantee, and (ii)
any consideration derived from the grantee performing research and development
or obtaining Regulatory Approvals with respect to the Product) to develop,
market, sell and distribute the GLIADEL Product in Japan over and above the
amount RPR is obligated to pay to GPI Holdings under Section III(D)(6)(a) of
this Agreement, RPR shall immediately upon granting such rights pay or provide
to GPI Holdings 50% of such excess cash and/or consideration.  If RPR has not
commenced to implement a plan for the development of a GLIADEL Product in
Japan, which is approved by the Governance Committee, within twelve (12) months
after the Effective Date, or if RPR thereafter does not use commercially
reasonable efforts to implement and pursue any such development plan for Japan,
the marketing, sales and distribution rights for Products in Japan shall revert
back to GPI Holdings.  With respect to RPR's rights under this Article





                                       12

<PAGE>   17
III in Japan, "GLIADEL Product" may include any anticancer product in the Field
consisting of the PCPP:SA polymer in combination with any nitrosurea, such as
ACNU and MCNU or any other anti-cancer agent approved by the Governance
Committee.

                 2.       RPR shall use commercially reasonable efforts at its
expense to pursue Regulatory Approval of the GLIADEL Product for the indication
of form(s) of malignant glioma, including glioblastoma multiforme, in each of
France, Germany, Italy, Spain, Canada, United Kingdom, and Australia and file
Regulatory Filings for the GLIADEL Product for the indication of form(s) of
malignant glioma, including glioblastoma multiforme, within eighteen (18)
months after the first Regulatory Approval of the GLIADEL Product for the
indication of recurrent or other form(s) of malignant glioma, including
glioblastoma multiforme, in the United States, or within any other time frame
if approved by the Governance Committee, provided that no further clinical
trials are required in connection with such any filing, and if any such
clinical trial is required, RPR shall file Regulatory Filings for the GLIADEL
Product for the indication of form(s) of malignant glioma, including
glioblastoma multiforme, in the applicable country or countries within eighteen
(18) months after the completion of all such trials, or within any other time
frame if approved by the Governance Committee.  In addition, RPR shall use
commercially reasonable efforts at its expense to pursue Regulatory Approval of
the GLIADEL Product for the indication of form(s) malignant glioma, including
glioblastoma multiforme, in such countries in the Territory (other than the
United States, Japan, France, Germany, Italy, Spain, Canada, United Kingdom,
and Australia) where the Operations Committee determines that it is
commercially reasonable to do so.  The timing of RPR's efforts to obtain such
Regulatory Approvals shall be guided by RPR's development and registration
plans, and will be determined by the Operations Committee.  RPR shall, within
90 days after the Effective Date, submit its development and registration plan
to the Operations Committee.  While dependent on the commercially reasonable
judgment of the Operations Committee, it is the intention of the parties that
each Regulatory Approval sought be as broad as practicable in order to maximize
the commercial potential of the Products contemplated by this Agreement.  In
the event that Regulatory Filings for the GLIADEL Product for the indication of
form(s) of malignant glioma, including glioblastoma multiforme, are not filed
with the relevant governmental agencies





                                       13

<PAGE>   18
in each of France, Germany, Italy, Spain, Canada, the United Kingdom and
Australia within the aforementioned time periods (unless otherwise agreed by
the Governance Committee), all rights granted under this Agreement with respect
to each such country where such Regulatory Filing was not timely made shall
immediately thereupon revert back to GPI Holdings, RPR shall provide to GPI
Holdings all clinical and other data generated to support RPR's pursuit of
Regulatory Approvals in each such reverted country, and GPI Holdings will
thereafter be free to grant such rights to GPI or any other third party.
Without limiting the generality of the foregoing, all clinical trials necessary
for Regulatory Approval of the GLIADEL Product outside the United States shall
be conducted by and shall be paid for by RPR.

                 3.       In connection with RPR's pursuit of any Regulatory
Approvals in the Territory, Guilford shall provide to RPR copies of all
Regulatory Filings relating to the Product that are in Guilford's possession or
control, as well as promptly provide to RPR such assistance, expertise and
other information as shall be reasonably necessary for RPR to obtain such
approvals including, but not limited to, the right to cross-reference
Guilford's Regulatory Filings (it being understood that, to the extent
necessary to protect Guilford's proprietary information, Guilford may provide
directly to a regulatory authority such proprietary information so long as it
does not adversely impact RPR's ability to obtain the Regulatory Approval from
such regulatory authority).  RPR will immediately furnish GPI with copies of
all Regulatory Filings made and Regulatory Approvals obtained by it pursuant to
this Agreement.

         D.      MILESTONE PAYMENTS.  In consideration of Guilford entering
into this Agreement, and of the achievement of certain milestones relating to
the GLIADEL Product, RPR shall pay to GPI or GPI Holdings, as specified below,
the following amounts:

                 1.       The sum of Seven Million Five Hundred Thousand
Dollars ($7,500,000) to GPI Holdings, due the date of execution and delivery of
this Agreement by the parties.

                 2.       The sum of Seven Million Five Hundred Thousand
Dollars ($7,500,000) to GPI, due the date of execution and delivery of this
Agreement by the parties, in consideration of





                                       14

<PAGE>   19
which GPI shall issue to RPR the Initial Shares (as defined in the Stock
Purchase Agreement), all as more particularly described in, and governed by the
Stock Purchase Agreement.

                 3.       The sum of Twenty Million Dollars ($20,000,000) to
GPI Holdings, due the first business day after RPR's receipt of a copy of the
written approval letter from the FDA for the Regulatory Approval of the GLIADEL
Product for the indication of recurrent form(s) of malignant glioma, including
glioblastoma multiforme, in the United States (which Regulatory Approval allows
the release of the GLIADEL Product into commerce).

                 4.       On the first business day after RPR's receipt of a
copy of the written approval letter from the FDA for the Regulatory Approval of
the GLIADEL Product for the indication of primary form(s) of malignant glioma,
including glioblastoma multiforme, in the United States:

                          (a)  The sum of Seven Million Five Hundred Thousand
Dollars ($7,500,000) to GPI Holdings; and

                          (b)  The sum of Seven Million Five Hundred Thousand
Dollars ($7,500,000) to GPI, in consideration of which GPI shall issue to RPR
the Additional Shares (as defined in the Stock Purchase Agreement), all as more
particularly described in, and governed by the Stock Purchase Agreement.

                 5.       RPR and Guilford agree that if the first Regulatory
Approval of the GLIADEL Product issued by the FDA is a written approval letter
from the FDA for the GLIADEL Product for the indication of form(s) of malignant
glioma, including glioblastoma multiforme (unqualified by any limitation to the
recurrent form(s) of malignant glioma), in the United States, the payments and
issuance of stock described in the preceding Sections III(D)(3) and (4) shall
be made together on the first business day after RPR's receipt of a copy of
such Regulatory Approval by the FDA.

                 6.       The respective sums set forth below opposite each of
the following countries on the first business day after RPR's receipt of the
Regulatory Approval of the GLIADEL Product for the indication of form(s) of
malignant glioma, including glioblastoma multiforme, in such country:





                                       15

<PAGE>   20
                 (a) Japan                -        $5,000,000;
                 (b) France               -        $5,000,000;
                 (c) Germany              -        $4,000,000;
                 (d) Italy                -        $3,000,000;
                 (e) Spain                -        $2,000,000;
                 (f) Canada               -        $2,000,000;
                 (g) U.K.                 -        $2,000,000; and
                 (h) Australia            -        $2,000,000.

RPR shall not be obligated to make any milestone payment upon the issuance of
any other Regulatory Approval.

Notwithstanding the foregoing, RPR shall not be obligated to make any of the
foregoing milestone payments if at the time of the issuance of any such
Regulatory Approval in an applicable country and the grant of such a
reimbursement price in such country, RPR's rights under this Agreement with
respect to such country have reverted back to GPI Holdings or otherwise
terminated.

         E.      NET SALES FEES.

                 1.       In further consideration of the rights granted to RPR
under this Agreement, RPR shall pay to GPI Holdings Net Sales fees ("Net Sales
Fees") on worldwide sales of Product as follows:

                          a.      in respect of Net Sales in a country where
RPR or its Affiliates, directly or indirectly, markets, sells and distributes,
or otherwise grants rights to market, sell and distribute, Product falling
within the scope of one or more Valid Claims of one or more issued Patents in
force in such country, a Net Sales Fee of ten percent (10%) of Net Sales of
such Product in such country shall be paid by RPR to GPI Holdings; and

                          b.      in respect of Net Sales in a country where
RPR or its Affiliates, directly or indirectly, markets, sells and distributes,
or otherwise grants rights to market, sell and distribute, Product that does
not fall within the scope of one or more Valid Claims of one or more issued
Patents in force in such country, or where Product faces generic competition, a
Net Sales Fee of five percent (5%) of Net Sales of such Product in such country
shall be paid by RPR to GPI Holdings.  "Generic competition" in a country for
purposes of the foregoing shall mean competition from a PCPP:SA/BCNU
polymer-drug product which





                                       16

<PAGE>   21
is sold pursuant to the equivalent of a U.S. ANDA, rather than a U.S. NDA, and
which is introduced into commerce in that country.

                 2.       Net Sales Fees payable in respect of sales outside
the United States will be payable by RPR to GPI Holdings at its offices in
Wilmington, Delaware in United States Dollars calculated in accordance with the
exchange rate policies and procedures of RPR.  Under its policies and
procedures, each month RPR translates Net Sales made in each country outside
the United States into United States Dollars at the average rate of exchange
for the applicable currency for such month, based upon daily exchange rate
information reported to RPR by the International Treasury Consulting
Corporation, New York, New York.

                 3.       With respect to Net Sales Fees owed with respect to
sales in the United States, RPR shall deliver to GPI Holdings within thirty
(30) days after the close of each calendar quarter a written report of RPR's
best good faith estimates of Net Sales during such calendar quarter and
corresponding Net Sales Fees owed, which report shall be accompanied by the Net
Sales Fees due for such calendar quarter.  With respect to Net Sales Fees owed
with respect to sales outside of the United States, RPR shall deliver to GPI
Holdings within sixty (60) days after the close of each calendar quarter a
written report of RPR's best good faith estimates of Net Sales during such
calendar quarter, the relevant currency conversion rates and corresponding Net
Sales Fees owed with respect to each country in the Territory, which report
shall be accompanied by the Net Sales Fees due for such calendar quarter.  Each
report with respect to a particular calendar quarter shall also contain a
reconciliation of the report for the preceding calendar quarter with the final
figures for Net Sales as reported on the formal books of RPR, and any
adjustments indicated thereby will be added or subtracted, as the case may be,
to or from the current calendar quarter's payment.

         F.      RECORDS AND AUDIT RIGHTS.

                 1.       RPR shall maintain, and cause to be maintained in its
Affiliates and other parties to which RPR or its Affiliates may grant
marketing, sales and distribution rights under this Agreement, complete and
accurate books and records with respect to Net Sales, Net Sales Price of the
Product (as defined in the Supply Agreement), Purchase Price for the Product 
(as defined in 





                                       17

<PAGE>   22
the Supply Agreement), Net Sales Fees and Research and Development Fees in or
with respect to each country in the Territory payable by RPR under this
Agreement and the Supply Agreement, along with such other reconciliation and
other information as may be necessary to calculate all consideration paid or
payable by RPR under this Agreement and the Supply Agreement.

                 2.       RPR shall maintain such books and records in
accordance with generally accepted accounting principles and for a period of
three (3) years after the submission of each report required to be submitted by
RPR to GPI Holdings and/or GPI under this Agreement; provided, however, that if
there is a good faith dispute between the parties continuing at the end of any
such three (3) year period with respect to such books or records, then the time
period for RPR to maintain such books and records under dispute shall be
extended until such time as the dispute is finally resolved.

                 3.       GPI Holdings and/or GPI shall have the right to
nominate an independent accountant acceptable to and approved by RPR (which
approval shall not be unreasonably withheld or delayed) who shall have access
to the relevant RPR records during reasonable business hours for the purpose of
verifying, at the expense of GPI Holdings and/or GPI, as the case may be, the
Net Sales by country, the Purchase Price (as defined in the Supply Agreement),
the Net Sales Price (as defined in the Supply Agreement), the Net Sales Fees
and the Research and Development Fees provided for in this Agreement for any of
the preceding three (3) years, but this right may not be exercised more than
once in any year.  GPI Holdings and/or GPI, as the case may be, shall solicit
or receive only information relating to the accuracy of the information and the
payments made.  RPR shall be entitled to withhold approval of an accountant
which GPI Holdings and/or GPI, as the case may be, nominates unless the
accountant agrees to sign a confidentiality agreement with RPR which shall
obligate such accountant to hold the information he receives from RPR in
confidence, except for information necessary for disclosure to GPI Holdings
and/or GPI, as the case may be, necessary to establish the accuracy of the
reports and amounts paid to GPI Holdings and/or GPI, as the case may be.  Such
audit rights shall survive for three (3) years after the expiration or
termination of this Agreement.





                                       18

<PAGE>   23

                 4.       Any underpayment shall be paid within thirty (30)
days of the delivery of a detailed written accountants report to the parties
hereto.  Any overpayment shall be credited to the next payment due from RPR.
If no further payments from RPR will be due then a refund of any such
overpayment will be made within sixty (60) days of the audit.  Notwithstanding
Section III(F)(3) above, if any audit as contemplated above shows an
underpayment by RPR of an amount greater than ten percent (10%) of the amount
paid, the fees and costs of such audit shall be for the account of RPR.

                 5.       The provisions of this Section III(F) shall survive
the expiration or sooner termination of the term of this Agreement.

         G.      GOVERNANCE COMMITTEE.

                 1.       RPR and GPI shall establish a "Governance Committee"
to be comprised of an equal number of representatives from RPR, on the one
hand, and GPI, on the other hand (not to exceed four representatives from each
of RPR and GPI).  Each of RPR and GPI shall have one vote on the Governance
Committee.  Upon unanimous vote, all decisions of the Governance Committee
shall be binding on RPR and GPI, and can only be modified by a unanimous vote
of RPR and GPI.

                 2.       The Governance Committee shall hold its first
official meeting within thirty (30) days after the Effective Date unless
otherwise agreed by RPR and GPI.  After such first meeting, the Governance
Committee shall meet upon such timing (but in any event at least once each
quarter), in such fashion (for example, in person, by telephone conference or
by video conference) and in such places as the Governance Committee shall
agree.

                 3.       The Governance Committee shall address strategic
aspects of and provide global direction to the collaboration between RPR and
Guilford, and shall discuss, review, monitor, and approve technical,
preclinical, clinical, regulatory and product supply plans relating to the
development, and improvement of the Product and any other project commenced
pursuant to the exercise by RPR of the right of first offer set forth in
Section III(J) below, including, without limitation, those matters described in





                                       19

<PAGE>   24
Section III(G)(4) below and budgets and allocation of resources from each of
RPR and GPI relating to such activities and contingency plans in the case of a
loss or interruption in manufacturing capability, but excluding all matters
that are within the jurisdiction of the Operations Committee pursuant to
Section III(H).  The Governance Committee shall have the right to request the
Operations Committee to assist it in connection with the performance of its
duties and obligations through the performance of, among other things, market
research and analysis.

                 4.       Without limiting the generality of the foregoing, the
Governance Committee shall discuss, review, monitor and approve the following
(including, without limitation, the most efficient use of the respective
resources of Guilford and RPR in connection therewith):

                          (i)  exploratory clinical development studies for the
treatment of metastatic and pediatric brain tumors and/or for any additional
uses of the GLIADEL Product;

                          (ii)  clinical development program for High Dose
GLIADEL Product for indications in the Field; and

                          (iii)  a feasibility study to assess the
applicability of Guilford's polymer technology to the local delivery of RPR's
Taxotere(R) product, and, based upon the results of that study, a determination
of the clinical indications, if any, which should be developed for any such
product, and the terms and conditions for such development.

                 5.       In the event of any deadlock or dispute between the
representatives of RPR on the Governance Committee, on the one hand, and the
representatives of Guilford on the Governance Committee, on the other hand, the
matter shall be resolved in accordance with the provisions of Section VI(L)
below.

         H.      OPERATIONS COMMITTEE.  RPR and GPI shall establish a
"Operations Committee" which shall review, monitor and discuss development,
regulatory filing, operational, marketing and sales plans and other issues
relating to the commercialization of the GLIADEL Product and High Dose GLIADEL
Product.  The Operations Committee shall be comprised of such number of
representatives from each of RPR, on the one hand, and GPI, on the other hand,
as





                                       20

<PAGE>   25
RPR and GPI mutually determine provided, however, that RPR shall at all times
have the right to appoint a majority of the members of the Operations
Committee.  The Operations Committee shall hold its first official meeting at
RPR's offices as soon as possible after the Effective Date and in any event
within thirty (30) days after the Effective Date, unless otherwise agreed by
RPR and GPI, and thereafter shall meet as necessary and at least on a quarterly
basis.  Marketing and sales plans shall be approved by the Operations Committee
as necessary and at least on a quarterly basis.  RPR shall use reasonable
efforts to implement the plans adopted by the Operations Committee with the
understanding that RPR shall have the flexibility necessary to optimize its
marketing efforts.

         I.      JOINT DEVELOPMENT ACTIVITIES.  Based upon the most efficient
use of the respective resources of RPR and Guilford in connection with the
following, as determined by the Governance Committee:

                 1.       RPR will sponsor and fund all of the costs of
exploratory clinical development studies of the GLIADEL Product for the
treatment of metastatic and pediatric brain tumors and/or such other uses as
the parties may agree, currently estimated by Guilford to amount to
approximately Two Million Dollars ($2,000,000) over two years;

                 2.       RPR will sponsor and fund the clinical development
program for indications in the Field of High Dose GLIADEL Product through
Regulatory Approval in the Territory, currently estimated by GPI to amount to
approximately Fifteen Million Dollars ($15,000,000) over four (4) years; and

                 3.       RPR and GPI shall conduct a feasibility study to
assess the applicability of GPI Holding's polymer technology to the local
delivery of RPR's Taxotere(R) product.

         J.      RIGHT OF FIRST OFFER.

                 1.       During the term of this Agreement, RPR shall have the
exclusive right of first offer with respect to any application (not limited to
the Field) of any of the polymer technology, polymer systems or polymer
products of Guilford to oncology products, whether such technology, systems or
products





                                       21

<PAGE>   26
are developed, owned or controlled prior to or after the Effective Date, in
accordance with the provisions of this Section III(J).

                 2.       Upon a determination by Guilford, supported by the
data referred to below, that any of the polymer technology, polymer systems or
polymer products of Guilford can be applied to the local delivery of a cancer
chemotherapeutic agent or of any other oncology product, and completion of the
animal studies referred to below (any such polymer technology which meets the
foregoing criteria is referred to herein as an "Offered Technology"), GPI shall
give written notice thereof to RPR, together with (i) all data available to
Guilford on physical product characteristics as well as all data on safety and
efficacy of the Offered Technology available from preliminary animal studies of
the Offered Technology conducted by Guilford, and (ii) all of Guilford's
available records and data relating to the Offered Technology (the "Offer
Notice").

                 3.       During the six month period commencing on the date
that RPR receives the Offer Notice (the "Offer Period"), RPR shall have the
exclusive right to evaluate the Offered Technology.  Such evaluation shall
include, without limitation, a determination by RPR of what, if any, clinical
indications should be developed for the Offered Technology.  During the Offer
Period, Guilford shall not (a) engage in any discussions with any potential
licensees, distributors, joint venturers or partners relating to the Offered
Technology or provide any information or data relating to the Offered
Technology to any third party, (b) permit any third party to inspect or
evaluate the Offered Technology, or (c) enter into any agreement with any third
party relating to the Offered Technology.

                 4.       If RPR desires to enter into an exclusive marketing,
sales and distribution rights, license, or other transaction or relationship
with Guilford relating to the Offered Technology, RPR shall give written notice
thereof to Guilford prior to the expiration of the Offer Period.  Immediately
upon Guilford's receipt of such a written notice from RPR, Guilford and RPR
shall commence good faith and commercially reasonable best efforts to enter
into a definitive agreement relating to RPR's desired transaction or
relationship as soon as is





                                       22

<PAGE>   27
reasonably practicable and in any event on or before the end of the Offer
Period.

                 5.       If despite Guilford's and RPR's making such efforts,
Guilford and RPR do not enter into a definitive agreement for the Offered
Technology on or before the end of the Offer Period, Guilford shall thereafter
be free to offer the Offered Technology to third parties.  While expressly not
constituting a binding right of first refusal in favor of RPR, Guilford
declares its good faith intention to be open to re-offering Offered Technology
to RPR if Guilford is in discussions with a third party for Offered Technology
on terms less favorable to Guilford than those last discussed with RPR.

                 6.       Notwithstanding anything to the contrary in this
Article III.J, nothing in this Agreement shall be deemed to require Guilford to
offer Offered Technology to RPR in conflict with any prior encumbrance:  (i) on
Improvements as defined and provided in Article XIII of the License and
Distribution Agreement, dated as of October 10, 1995, between GPI and Orion
Corporation Farmos, with respect to rights in Denmark, Finland, Norway and
Sweden; or (ii) on technology acquired by Guilford (whether by license,
assignment, via an acquisition or merger or otherwise) from a third party
subject to a prior encumbrance (e.g., a prior right in favor of such third
party or another party with whom such third party is already engaged in a
research and development collaboration).  Guilford is not currently
contemplating acquiring technology in the polymer delivery of cancer
chemotherapeutic compounds or of other oncological products which may be
encumbered as contemplated in (ii) above.

         K.      RESEARCH AND DEVELOPMENT FEE.

                 1.       In consideration for the rights granted by Guilford
to RPR under Section III(J), RPR shall pay to GPI Holdings "Research and
Development Fees," as follows:

                          (a)  five percent (5%) of annual Net Sales of Product
sold throughout the Territory in each calendar year until such time that such
aggregate Net Sales equal $50,000,000;

                          (b)  seven and one-half percent (7 1/2%) of annual
Net Sales of Product sold throughout the Territory in each





                                       23

<PAGE>   28
calendar year from and after the time that such aggregate Net Sales exceed
$50,000,000 until such time that such aggregate Net Sales equal $100,000,000;
and

                          (c)  ten percent (10%) of annual Net Sales of Product
sold throughout the Territory in each calendar year from and after the time
that such aggregate Net Sales exceed $100,000,000.

                 2.       Research and Development Fees payable in respect of
sales outside the United States will be payable by RPR to GPI Holdings at its
offices in Wilmington, Delaware in United States Dollars calculated in
accordance with the exchange rate policies and procedures of RPR.  Under its
policies and procedures, each month RPR translates Net Sales made in each
country outside the United States into United States Dollars at the average
rate of exchange for the applicable currency for such month, based upon daily
exchange rate information reported to RPR by the International Treasury
Consulting Corporation, New York, New York.

                 3.       With respect to Research and Development Fees owed
with respect to sales in the United States, RPR shall deliver to GPI Holdings
within thirty (30) days after the close of each calendar quarter a written
report of RPR's best good faith estimates of Net Sales during such calendar
quarter and corresponding Research and Development Fees owed, which report
shall be accompanied by the Research and Development Fees due for such calendar
quarter.  With respect to Research and Development Fees owed with respect to
sales outside of the United States, RPR shall deliver to GPI Holdings within
sixty (60) days after the close of each calendar quarter a written report of
RPR's best good faith estimates of Net Sales during such calendar quarter, the
relevant currency conversion rates and corresponding Research and Development
Fees owed with respect to each country in the Territory, which report shall be
accompanied by the Research and Development Fees due for such calendar quarter.
Each report with respect to a particular calendar quarter shall also contain a
reconciliation of the report for the preceding calendar quarter with the final
figures for Net Sales as reported on the formal books of RPR, and any
adjustments indicated thereby will be added or subtracted, as the case may be,
to or from the current calendar quarter's payment.





                                       24

<PAGE>   29
                                   ARTICLE IV

IV.      GENERAL TERMS AND CONDITIONS.

         A.      CONFIDENTIALITY; PRESS RELEASES.

                 1.       Pursuant to the Confidentiality Agreement dated as of
February 29, 1996 between GPI and RPR, and from time to time during the term of
this Agreement, each of RPR and Guilford (in such capacity, the "Disclosing
Party") have disclosed and will be disclosing to the other party (in such
capacity, the "Receiving Party") certain proprietary information, technical
data, trade secrets and know-how of the Disclosing Party including, without
limitation, Know-How, Product research and plans, designs, methods,
formulations, ingredients, samples, processes, machines, processing and control
information, Product performance data, manuals, INDs, NDAs, Regulatory Filings,
the content of any unpublished patent applications, drawings, formulae,
devices, structures, models, prototypes, data, test results, photographs, film,
techniques, apparatus, tapes, disks, unpublished trademarks, trade names and
copyrights, customer lists, supplier lists, markets, operating methods and
procedures, marketing, distribution and sales methods and systems, sales
figures, projections, finances and other business information.  The Receiving
Party shall, during the term of this Agreement, and for seven (7) years after
the expiration or sooner termination of the term of this Agreement, make no use
of such confidential information except to advance the purposes of this
Agreement in accordance with its provisions, and shall use the same efforts to
keep secret and prevent the disclosure of such confidential information to
third parties, as it would use with respect to its own confidential
information.  Information disclosed by the Disclosing Party shall remain the
sole and absolute property of the Disclosing Party, subject to the rights
granted in this Agreement and the transactions contemplated herein.  The above
restrictions on the use and disclosure of information shall not apply to any
information which: (a) is already known to the Receiving Party at the time of
disclosure, as demonstrated by competent proof; (b) is or becomes generally
available to the public other than through any act or omission of the Receiving
Party in breach of this Agreement; (c) is acquired by the Receiving Party from
a third party who is not, directly or indirectly, under an obligation of
confidentiality to the





                                       25

<PAGE>   30
Disclosing Party with respect to same; (d) is required to be disclosed pursuant
to applicable law, rule or regulation; (e) is required to be disclosed to
government regulatory authorities to obtain Regulatory Approval for the Product
or to respond to a regulatory or governmental inquiry concerning the Product;
or (f) is developed independently by the Receiving Party without use, direct or
indirect, of information that is required to be held confidential hereunder.
In the event that Confidential Information is required to be disclosed pursuant
to subsections (d) or (e) of this Section IV(A)(1), the Receiving Party shall
promptly inform the Disclosing Party of the circumstances requiring disclosure
of the information prior to disclosure to afford the Disclosing Party an
opportunity to seek an appropriate protective order or other means of seeking
confidential treatment for such information.

                 2.       Notwithstanding the foregoing Section IV(A)(1), RPR
shall be permitted to disclose to its wholesalers and other direct customers
such confidential information relating to the Product as RPR shall reasonably
determine to be necessary in order to effectively market and distribute the
Product, provided that such entities undertake the same confidentiality
obligation as RPR has with respect to Guilford's confidential information.

                 3.       Except as may be required by applicable laws, rules
or regulations, neither party will originate any publicity, press or news
release, or other public announcement, written or oral, whether to the public
press or otherwise, relating to this Agreement, the transactions contemplated
hereby, or to the existence of an arrangement between the parties, without the
prior written approval of the other party.  In the event disclosure of this
Agreement, any of the agreements referred to herein, any of the terms and
conditions of this Agreement or such agreements, or any of the transactions
contemplated by this Agreement or such agreements, is required by applicable
law, rules or regulations (and RPR acknowledges that the execution and delivery
of this Agreement is material to the business and finances of GPI and that GPI
has an obligation to disclose the execution and delivery of this Agreement,
this Agreement and the material terms and conditions of this Agreement), then
the party required to so disclose such information shall, to the extent
possible, provide to the other party for its prior approval (such approval not
to be unreasonably withheld or delayed) a written





                                       26

<PAGE>   31
copy of such public announcement.  When possible, the disclosing party will
provide such copy to the other party at least three (3) business days prior to
disclosure.

                 4.       Neither party shall use the name of the other for
marketing, advertising or promotional claims without the prior written consent
of the other party.

                 5.       The provisions of this Section IV(A) shall survive
the expiration or sooner termination of the term of this Agreement.

         B.      REPRESENTATIONS AND WARRANTIES.

                 1.       Each of GPI Holdings and GPI, jointly and severally,
                          represents and warrants to RPR that:

                          a.      Guilford has provided to the FDA all data
                                  that is in the possession or control of
                                  Guilford and which relates to the safety and
                                  efficacy of the GLIADEL Product;

                          b.      As of the Effective Date, to Guilford's
                                  knowledge, the Product neither violates nor
                                  infringes any patents, patent rights, patent
                                  applications, inventions, trademarks, service
                                  marks, trade names, copyrights, confidential
                                  information, trade secrets, proprietary
                                  rights or processes of any other Person;

                          c.      As of the Effective Date, to Guilford's
                                  knowledge, each of the issued Patents is
                                  valid and enforceable;

                          d.      As of the Effective Date, there are no
                                  pending or, to Guilford's knowledge, any
                                  threatened suits, claims, or actions of any
                                  type whatsoever with respect to any of
                                  Guilford's products or the Patents or
                                  Guilford's Know-How relating to the Product;

                          e.      As of the Effective Date, (i) each of the
                                  GPI License Agreements is valid and
                                  enforceable





                                       27

<PAGE>   32
                                  in accordance with its terms, except to the
                                  extent that such enforcement may be limited
                                  by applicable bankruptcy, insolvency,
                                  reorganization, moratorium, and other similar
                                  laws affecting creditors' rights generally
                                  and by general principles of equity
                                  (regardless of whether enforceability is
                                  considered in a proceeding in equity or at
                                  law); (ii) Guilford is not, and to Guilford's
                                  knowledge no other party thereto is, in
                                  default in the performance, observance or
                                  fulfillment of any material obligation,
                                  covenant or condition contained in any of the
                                  GPI License Agreements, (iii) no event has
                                  occurred which with or without the giving of
                                  notice or lapse of time, or both, would
                                  constitute a default under any of the GPI
                                  License Agreements; (iv) in Guilford's
                                  reasonable opinion, none of the GPI License
                                  Agreements contains any contractual
                                  requirement with which there is a reasonable
                                  likelihood Guilford or any other party
                                  thereto will be unable to comply;

                          f.      As of the Effective Date, all Patents
                                  presently owned or licensed by Guilford
                                  relates to the manufacture, use or sale of
                                  the Product are owned or licensed by Guilford
                                  free and clear of any encumbrances, liens or
                                  security interests, except as contemplated
                                  herein, the GPI License Agreements and the
                                  License and Distribution Agreement, dated as
                                  of October 13, 1995, between GPI and Orion
                                  Corporation Farmos (the parties acknowledge
                                  and agree that this representation and
                                  warranty does not relate to the validity or
                                  enforceability of such Patents or whether
                                  such Patents may infringe any other patents);

                          g.      This Agreement, when executed and delivered
                                  by Guilford, will be the legal, valid and
                                  binding obligation of Guilford, enforceable
                                  against Guilford in accordance with its





                                       28

<PAGE>   33
                                  terms, except as such enforceability may be
                                  limited by bankruptcy laws and other similar
                                  laws affecting creditors' rights generally
                                  and by general principles of equity;

                          h.      Upon compliance by the parties with
                                  applicable requirements of the
                                  Hart-Scott-Rodino Antitrust Improvements Act
                                  of 1976, as amended (the "HSR Act"), if any,
                                  the execution, delivery and performance of
                                  this Agreement by Guilford do not and will
                                  not (i) conflict with, or constitute a breach
                                  or default under, or require the consent of
                                  any third party under, Guilford's charter
                                  documents or any material license, loan or
                                  other agreement, contract, commitment or
                                  instrument to which Guilford is a party or
                                  any of its assets are bound, (ii) violate any
                                  provision of law, statute, rule or regulation
                                  or any ruling, writ, injunction, order,
                                  judgment or decree of any court,
                                  administrative agency or other governmental
                                  body, or (iii) require the consent, approval
                                  or authorization of, or notice, declaration,
                                  filing or registration with, any third party
                                  or any governmental or regulatory authority;

                          i.      There is no action or proceeding pending or,
                                  in so far as Guilford knows, threatened
                                  against Guilford or any of its Affiliates
                                  before any court, administrative agency or
                                  other tribunal which could impact upon
                                  Guilford's right, power and authority to
                                  enter into this Agreement, to grant the
                                  rights granted by Guilford to RPR hereunder,
                                  or to otherwise carry out its obligations
                                  hereunder, or which might have a material
                                  adverse effect on Guilford's business or
                                  condition, financial or otherwise, or
                                  Guilford's operation of any business, except
                                  to the extent that Regulatory Approvals (for
                                  which there can be no assurance of grant by





                                       29

<PAGE>   34
                                  applicable governmental authorities) will be
                                  needed in order to market any Products; and

                          j.      The GLIADEL Product has been granted Orphan
                                  Drug Status by the FDA.

                 2.       RPR represents and warrants to each of GPI Holdings
                          and GPI that:

                          a.      This Agreement, when executed and delivered
                                  by RPR, will be the legal, valid and binding
                                  obligation of RPR, enforceable against RPR in
                                  accordance with its terms, except as such
                                  enforceability may be limited by bankruptcy
                                  laws and other similar laws affecting
                                  creditors' rights generally and by general
                                  principles of equity;

                          b.      Upon compliance by the parties with any
                                  applicable requirements of the HSR Act, if
                                  any, the execution, delivery and performance
                                  of this Agreement by RPR do not and will not
                                  (i) conflict with, or constitute a breach or
                                  default under, its charter documents or any
                                  material agreement, contract, commitment or
                                  instrument to which it is a party, (ii)
                                  violate any provision of law, statute, rule
                                  or regulation or any ruling, writ,
                                  injunction, order, judgment or decree of any
                                  court, administrative agency or other
                                  governmental body, or (iii) require the
                                  consent, approval or authorization of, or
                                  notice, declaration, filing or registration
                                  with, any third party or any governmental or
                                  regulatory authority; and

                          c.      There is no action or proceeding pending or,
                                  in so far as RPR knows, threatened against
                                  RPR or any of its Affiliates before any
                                  court, administrative agency or other
                                  tribunal which could impact upon RPR's right,
                                  power and authority to enter into this
                                  Agreement, to carry out its obligations





                                       30

<PAGE>   35
                                  hereunder, or which might have a material
                                  adverse effect on RPR's business or
                                  condition, financial or otherwise, or RPR's
                                  operation of any business.

                 3.       Where a representation or warranty contained in this
Section IV(B) is stated to be to a party's knowledge, this shall mean to the
actual knowledge of all of the officers and appropriate key personnel of such
party, after reasonable inquiry.

                 4.       EXCEPT FOR THE EXPRESS WARRANTIES CONTAINED IN THIS
AGREEMENT, NEITHER GPI HOLDINGS, GPI NOR RPR MAKES ANY WARRANTIES OR
REPRESENTATIONS, EXPRESS OR IMPLIED, IN FACT OR IN LAW, INCLUDING ANY IMPLIED
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
NON-INFRINGEMENT.

                 5.       The provisions of this Section IV(B) shall survive
the expiration or sooner termination of the term of this Agreement.

         C.      INDEMNIFICATION; PRODUCT LIABILITY CLAIMS.

                 1.       In order to distribute among themselves the
responsibility for claims arising out of this Agreement, and except as
otherwise specifically provided for herein, the parties agree as follows:

                                  a.       Each of GPI and GPI Holdings,
         jointly and severally, shall defend, indemnify and hold RPR, its
         Affiliates, and their respective officers, directors, agents,
         employees and shareholders (collectively, "RPR Indemnitees") harmless,
         from and against, any and all losses, obligations, liabilities,
         penalties, and damages (including but not limited to compensatory and
         punitive damages), costs and expenses (including reasonable attorneys'
         fees), which the RPR Indemnitees may incur or suffer, and all
         deficiencies, actions (including without limitation, any proceedings
         to establish insurance coverage), claims, suits, legal,
         administrative, arbitration, governmental or other proceedings or
         investigations, and judgments, reasonable costs and expenses
         (including reasonable legal fees) with which any of them may





                                       31

<PAGE>   36
         be faced arising out of (1) any breach by GPI or GPI Holdings of any
         representation or warranty made by GPI or GPI Holdings in this
         Agreement or any breach by GPI or GPI Holdings in the performance or
         observation of any covenant, agreement, obligation or provision in
         this Agreement to be performed or observed by GPI or GPI Holdings; (2)
         any pre-clinical or clinical use or any other use of the GLIADEL
         Product under GPI's Treatment IND until assignment of the NDA by GPI
         to RPR pursuant to Section V(C); (3) any negligent or otherwise
         tortious act or omission by GPI or GPI Holdings in connection with the
         performance or observation of any covenant, agreement, obligation or
         provision in this Agreement to be performed or observed by GPI or GPI
         Holdings (including, without limitation, the conduct of any clinical
         trials conducted by it in the performance of this Agreement); and (4)
         the enforcement by the RPR Indemnitees of their rights under this
         Section IV(C)(1)(a).

                                  b.      RPR shall defend, indemnify and hold
         each of GPI and GPI Holdings, its Affiliates, and their respective
         officers, directors, agents, employees and shareholders (collectively,
         "GPI Indemnitees") harmless, from and against, any and all losses,
         obligations, liabilities, penalties, and damages (including but not
         limited to compensatory and punitive damages), costs and expenses
         (including reasonable attorneys' fees), which the GPI Indemnitees may
         incur or suffer, and all deficiencies, actions (including without
         limitation, any proceedings to establish insurance coverage), claims,
         suits, legal, administrative, arbitration, governmental or other
         proceedings or investigations, and judgments, reasonable costs and
         expenses (including reasonable legal fees) with which any of them may
         be faced arising out of (1) any breach by RPR of any representation or
         warranty made by RPR in this Agreement or any breach by RPR in the
         performance or observation of any covenant, agreement, obligation or
         provision in this Agreement to be performed or observed by RPR; (2)
         any negligent or otherwise tortious act or omission by RPR in
         connection with the performance or observation of any covenant,
         agreement, obligation or provision in this Agreement to be performed
         or observed by RPR (including, without limitation, the conduct of any
         clinical trials





                                       32

<PAGE>   37
         conducted by it in the performance of this Agreement); and (3) the
         enforcement by the GPI Indemnitees of their rights under this Section
         IV(C)(1)(b).

                                  c.     If any action, claim, suit,
         proceeding or investigation arises as to which a right of
         indemnification provided in this Section IV(C)(1) applies, the GPI
         Indemnitee or RPR Indemnitee, as the case may be (the "indemnified
         party"), shall promptly notify the party obligated under this Section
         IV(C)(1) to indemnify the indemnified party (the "indemnifying party")
         thereof in writing, and allow the indemnifying party and its insurers
         the opportunity to assume direction and control of the defense against
         such action, claim, suit, proceeding or investigation, at its sole
         expense, including without limitation, the settlement thereof at the
         sole option of the indemnifying party or its insurers to the extent
         that the indemnified party's liability is not thereby invoked.  The
         indemnified party shall cooperate with the indemnifying party and its
         insurer in the disposition of any such matter and the indemnified
         party will have the right and option to participate in the defense of
         any action, claim, suit, proceeding or investigation as to which this
         Section IV(C)(1) applies, with separate counsel at its election and
         cost.  If the indemnifying party fails or declines to assume the
         defense of any such action, claim, suit, proceeding or investigation
         within thirty (30) days after notice thereof, the indemnified party
         may assume the defense thereof for the account and at the risk of the
         indemnifying party.  The indemnifying party shall pay promptly to the
         indemnified party any losses, obligations, liabilities, penalties,
         damages, judgments, reasonable costs and expenses (including
         reasonable legal fees) to which the indemnity under this Section
         IV(C)(1) relates, as incurred.

                 2.       The parties desire to separately allocate between
themselves the risks and costs of any product liability claims from third
parties with respect to the Product (whether related to the safety or efficacy
of the Product or arising out of alleged defects in materials, design or
workmanship of the Product or the use, marketing, advertising, promotion, or
distribution of the Product, but excluding those claims (1) for which GPI and
GPI Holdings are obligated to defend, indemnify and





                                       33

<PAGE>   38
hold the RPR Indemnities harmless under Section IV(C)(1)(a), and (2) for which
RPR is obligated to defend, indemnify and hold the GPI Indemnities harmless
under Section IV(C)(1)(b)) (hereafter, a "Product Liability Claim").  Any
losses, obligations, liabilities, penalties, and damages (including but not
limited to compensatory and punitive damages), costs and expenses (including
reasonable attorneys' fees), arising out of a Product Liability Claim shall be
shared equally by RPR and Guilford.  If either party becomes aware of a Product
Liability Claim, it shall promptly notify the other party of such matter, and
provide copies of any notices, claims, letters or other information which such
party received or possesses in connection with such Product Liability Claim.
Each party shall reasonably cooperate with the other party with respect to the
defense and resolution of any such Product Liability Claim.

                 3.       The provisions of this Section IV(C) shall survive
the expiration or sooner termination of the term of this Agreement.

         D.      TERM.

                 1.       The term of this Agreement shall commence on the
Effective Date and shall continue on a country-by-country basis, subject to the
respective termination rights of RPR and Guilford expressly set forth in this
Agreement, until the later of (a) the expiration of the last to expire of the
Patents applicable to a particular country, or (b) the last commercial sale of
the Product in such country.

                 2.       In the event of a Change in Control of GPI or GPI
Holdings, RPR shall have the right to terminate the term of this Agreement,
exercisable by giving Guilford thirty (30) days prior written notice thereof.

                 3.       If on or before the first anniversary of the
Effective Date, RPR has not received a copy of (a) the written approval letter
from the FDA for the Regulatory Approval of the GLIADEL Product for the
indication of recurrent form(s) of malignant glioma, including glioblastoma
multiforme, in the United States (which Regulatory Approval allows the release
of the GLIADEL Product into commerce), or (b) the written approval letter from
the FDA for the Regulatory Approval of the GLIADEL





                                       34

<PAGE>   39
Product for the indication of form(s) of malignant glioma, including
glioblastoma multiforme (unqualified by any limitation to the recurrent form(s)
of malignant glioma), in the United States, RPR shall have the right to
terminate the term of this Agreement, exercisable by giving Guilford thirty
(30) days prior written notice thereof.

                 4.       The following shall survive the expiration or sooner
termination of the term of this Agreement: any payment obligations of the
parties hereunder accruing prior to the date of expiration or termination; and
any other provision herein expressly surviving expiration or termination or
necessary to interpret the rights and obligations of the parties in connection
with the expiration or termination of the term of this Agreement.

                 5.       Upon termination of this Agreement for any reason,
all marketing, sales and distribution rights in the Territory granted under
this Agreement, and all Regulatory Approvals and Regulatory Filings, all
preclinical and clinical research and development data relating to the Product,
if any, that is in the possession or control of RPR, and all Licensed
Trademarks and all other trademarks under which RPR may be marketing, selling
or distributing Product in the Territory shall immediately be assigned or
returned to GPI Holdings or GPI as Guilford may direct, notwithstanding (but
without prejudice to) any claims any party may have against another under this
Agreement and the transactions contemplated herein, provided that RPR shall be
allowed the benefits of Section IV(F)(4) for the period set forth therein.

         E.      EVENTS OF DEFAULT.

                 1.       The occurrence of any one or more of the following
acts, events or occurrences shall constitute an "Event of Default" under this
Agreement:

                                        i.     either party becomes the
                                               subject of a Bankruptcy Event;
                                               or

                                        ii.    either party breaches any
                                               material provision of this
                                               Agreement, the Supply
                                               Agreement, the Stock Purchase
                                               Agreement or the Loan





                                       35

<PAGE>   40
                                               Agreement, or defaults in the
                                               performance or observance of
                                               any  material provision of
                                               this Agreement, the Supply
                                               Agreement, the Stock Purchase
                                               Agreement or the Loan
                                               Agreement, and fails to
                                               remedy such breach or default
                                               within sixty (60) days after
                                               receipt of notice thereof.

                 2.       Notwithstanding the foregoing Section IV(E)(1)(ii),
in the event of a breach or default which cannot be remedied within such sixty
(60) day period (other than a failure to make payment as required herein), so
long as the breaching/defaulting party is using commercially reasonable efforts
to remedy such breach or default, an Event of Default shall not have occurred
until four (4) months after notice of such breach or default and only if such
breach or default is not cured during such period.

         F.      REMEDIES.

                 1.       Immediately upon the occurrence of any Event of
Default by Guilford pursuant to Section IV(E)(1) or (E)(2), then RPR shall have
the right to terminate this Agreement, exercisable by delivering written notice
thereof to Guilford, and to pursue any and all remedies available to it at law
or in equity including, without limitation, the right to seek to recover from
Guilford any and all damages and losses of any nature whatsoever (including,
without limitation, consequential damages, lost profits, and direct damages).

                 2.       Immediately upon the occurrence of any Event of
Default by RPR pursuant to Section IV(E)(1) or (E)(2), Guilford shall have the
right to terminate this Agreement, exercisable by delivering written notice
thereof to RPR.  If Guilford so terminates this Agreement, then in addition to
the rights specified in Section IV(D)(5) above, Guilford shall also have the
right to pursue any and all remedies available to Guilford at law or in equity
including, without limitation, the right to seek to recover from RPR any and
all damages and losses of any nature whatsoever (including, without limitation,
consequential damages, lost profits, and direct damages).





                                       36

<PAGE>   41
                 3.       The parties expressly acknowledge that the remedy
provisions contained in this Section are reasonable, considering the intended
nature and scope of this Agreement, and considering the investments and
undertakings required on the part of the parties in connection herewith.

                 4.       Upon termination of this Agreement by Guilford, RPR
shall have one hundred eighty (180) days in which to sell out its stock of any
Product it possesses or has committed to purchase under this Agreement (it
being understood that RPR's payment obligations to Guilford under this
Agreement shall continue to apply to any such sales).

                 5.       If either party terminates this Agreement in
accordance with the terms herein, the terminating party shall owe no penalty or
indemnity to the terminated party on account of such termination.

         G.      FORCE MAJEURE.  The obligations of Guilford and RPR hereunder
shall be subject to any delays or non-performance caused by: acts of God,
earthquakes, fires, floods, explosion, sabotage, riot, accidents; regulatory,
governmental, or military action or inaction; strikes, lockouts or labor
trouble; perils of the sea; or failure or delay in performance by third
parties, including suppliers and service providers; or any other cause beyond
the reasonable control of either party.  The party which is not performing its
obligations under this Agreement as a result of any such event of force majeure
shall use commercially reasonable efforts to resume compliance with this
Agreement as soon as possible.

         H.      INVENTIONS.

                 1.       Title to any inventions or discoveries made by
Guilford employees or agents without inventive contribution of RPR employees or
agents, based on any of Guilford's Know-How related in any way to the Product
or developed during Guilford's performance under this Agreement ("GPI
Inventions") shall belong to GPI Holdings.  GPI Holdings may file applications
for U.S. Patents at its own expense for such GPI Inventions and shall keep RPR
fully and promptly informed as to such GPI Inventions and the filing,
prosecution and maintenance of such patent application(s) and patent(s) and
corresponding foreign patent applications





                                       37

<PAGE>   42
except to the extent such obligations conflict with Guilford's contractual
obligations with third parties.  If GPI Holdings does not elect to file,
prosecute or maintain any such patent application(s) or patent(s) on such GPI
Inventions after being reduced to practice, Guilford shall so notify RPR and
RPR shall, in its sole discretion, have the right to require that Guilford
file, prosecute or maintain at RPR expense on a country by country basis such
patent application(s) or patent(s) on such GPI Inventions; provided, however,
that in the event any such GPI Inventions can be kept a trade secret, then RPR
shall only have the right to request that Guilford file such patent
applications.  In that event, RPR shall pay the costs and expenses of and
manage the prosecution of such patent application(s) or patent(s).  Guilford
will cooperate in a timely manner with RPR to prepare, review and execute all
such patent applications and further papers as may be necessary to enable the
parties to protect such GPI Inventions by patent.

                 2.       Title to any inventions and discoveries made by RPR
employees or agents without inventive contribution by Guilford employees or
agents and not based on any of Guilford's Know-How and conceived or first
reduced to practice under this Agreement (hereinafter, "RPR Inventions") shall
belong to RPR.  RPR may file patent application(s) for RPR Inventions in its
own discretion and at its own expense.

                 3.       Title to any inventions or discoveries (i) made
jointly by employees or agents of Guilford and RPR or (ii) made by RPR
employees or agents without inventive contribution by Guilford employees or
agents and based upon Guilford's Know-How (other than any such Know-How which
is in the public domain through no fault of RPR) and, in either case, conceived
or first reduced to practice under this Agreement (hereinafter, "Joint
Inventions") shall belong to GPI Holdings and RPR jointly, i.e. each shall own
an undivided one-half interest therein.  GPI Holdings and RPR shall keep each
other fully and promptly informed as to such Joint Inventions.  After Joint
Inventions are reduced to practice GPI Holdings shall have primary
responsibility for filing, prosecuting and maintaining any U.S. patent
application(s) or patent(s) and foreign counterpart thereof for Joint
Inventions, but shall consult with RPR.  The expenses for Joint Inventions
shall be borne equally by RPR and GPI Holdings, but either may, by giving
timely notice to the





                                       38

<PAGE>   43
other, withdraw from further participation in the filing, prosecution and/or
maintenance of any such patent application(s) or patent(s) and shall not be
liable for any expenses incurred after written notice is given.  If either
party does not elect to file, prosecute or maintain any such patent
application(s) or patent(s) in a country or countries, or after electing to
participate in the filing, prosecution and/or maintenance on such Joint
Inventions in a country or countries, does not pay its share of the expenses
within one hundred twenty (120) days of written notification of expenses being
due, the other party, in its sole discretion, shall have the right to file,
prosecute or maintain at its expense on a country by country basis each such
patent application(s) and patent(s).  In that event, the party paying all the
costs and expenses shall cease to have any further obligation to pay a royalty
to the other party on such patent(s) in such country.

                 4.       Each party shall require its employees or agents
responsible for conducting research in performance of this Agreement to keep
contemporaneous records of their results and findings in sufficient detail to
document any inventions or discoveries made by such employees and agents under
this Agreement in bound notebooks (that shall be reviewed and signed by a
witness on a regular basis).

                 5.       GPI Holdings and RPR will cooperate in a timely
manner to prepare, review and execute patent applications and all such further
papers as may be necessary to enable the parties to protect Joint Inventions by
patent in any and all countries and to vest title to said patent application(s)
and patent(s) and assist in Patent Office proceedings.

                 6.       If either party wishes to practice a patented Joint
Invention outside the grants provided to RPR under this Agreement, the party
practicing the patented Joint Invention will pay an agreed upon reasonable
royalty percentage of the net selling price (which shall mean Net Sales with
respect to any other product) of any other product unless said Joint Invention
is used solely by a party in fulfilling its obligations under this Agreement;
provided, however, that if a party seeks to practice a patented Joint Invention
for which it did not pay its share of the cost and expenses, such party shall
have to reimburse the party that paid the costs and expenses one-half of





                                       39

<PAGE>   44
the documented costs and expenses incurred in the country or countries in which
the party seeking to practice the Joint Invention will make, have made, use,
lease or sell the other product prior to practicing the patented Joint
Invention.

                 7.       In the event that a party owes royalty, such party
shall deliver to the party owed the royalty written reports of Net Sales during
the preceding calendar quarter, on or before the thirtieth (30th) day following
the end of each calendar quarter.  In the event that a party owes royalty for
sales made by its Affiliate or its sublicensee, such party shall deliver to the
party owed the royalty written reports of Net Sales of its Affiliates and its
sublicensee during the preceding calendar quarter, on or before the ninetieth
(90th) day following the end of each calendar quarter.  Such reports shall
include a calculation of the earned royalty due and shall be accompanied by the
monies due.

                 8.       The respective party owed royalty and paying royalty
under this Section IV(H), shall have the same rights to access records and
obligations as provided under Section III(F) with respect to the Net Sales Fees
payable by RPR under this Agreement.

                 9.       The provisions of this Section IV(H) shall survive
the expiration or sooner termination of the term of this Agreement.

         I.      INFRINGEMENT.

                 1.       If, as a result of the manufacture, use or sale of
the Product, Guilford or RPR or any of its Affiliates is sued for patent
infringement or threatened with such a lawsuit or other action by a third
party, Guilford and RPR shall meet to analyze the infringement claim and
avoidance of same.  Subject to the sharing of any royalties in accordance with
the provisions set forth below in this Section IV(I), Guilford shall defend,
indemnify and hold the RPR Indemnities harmless from and against any and all
such claims, suits,





                                       40

<PAGE>   45
threatened suits and actions, and all related losses, obligations, liabilities,
penalties, damages (including but not limited to compensatory and punitive
damages), judgments, and reasonable costs and expenses (including reasonable
legal fees), arising out of such claims, suits, threatened suits and actions.
The RPR Indemnitees shall give Guilford prompt written notice of any such
claim, suit, threatened suit or action, and reasonable assistance to Guilford
in connection with Guilford's defense and settlement thereof.  Guilford shall
not settle any such claim, suit, threatened suit or action without the prior
written consent of RPR, which shall not be unreasonably withheld or delayed.
If it is necessary to obtain a license from such third party, Guilford and RPR
shall attempt in good faith to obtain a commercially reasonable license from
such third party as soon as is reasonably practicable.  In negotiating such a
license, Guilford and RPR shall make every effort to minimize the fees,
royalties, costs and expenses payable to such third party in connection with
obtaining and maintaining such license.  If RPR shall be obligated to pay
royalties based upon sales by RPR or its Affiliates or non-Affiliated
distributors to obtain or maintain any such license, then Guilford and RPR
shall each be responsible for paying one-half (1/2) of such royalties up to 5%
(i.e., 2.5% RPR share) of sales by RPR or its Affiliates or non-Affiliated
distributors, and Guilford shall be responsible for paying all royalties in
excess of 5% of sales by RPR or its Affiliates or non-Affiliated distributors
and all other fees, costs and expenses payable to the licensor in connection
with obtaining and maintaining such license.  If Guilford fails to pay any of
the foregoing, RPR shall have the right, but not the obligation, to pay same on
behalf of Guilford, and if RPR does so, RPR shall have the right to offset all
such amounts against any of the amounts owing by RPR to Guilford under this
Agreement.  If despite their good faith efforts, Guilford and RPR are unable to
secure a license from such third party containing commercially reasonable terms
and conditions within one hundred and eighty (180) days after the commencement
of negotiations with such third party, RPR shall have the right to immediately
terminate this Agreement, exercisable by delivering written notice thereof to
Guilford.

                 2.       In the event that there is infringement of a Patent
involving the Product by a third party, Guilford and RPR (or its Affiliate or
sublicensee) shall notify each other in writing to that effect, including with
said written notice evidence establishing a case of infringement by such third
party.  Guilford shall bear all the expenses of any suit brought by it and
shall retain all damages or other monies awarded or received in settlement of
such suit.  RPR and/or its Affiliates will





                                       41

<PAGE>   46
cooperate with Guilford in any such suit or shall have the right to consult
with Guilford and be represented by its own counsel at its own expense.  If
after the expiration of one hundred eighty (180) days from the date of receipt
of said notice, Guilford has not overcome the case of infringement, obtained a
discontinuance of such infringement, or brought suit against the third party
infringer, then, subject to the provisions of the GPI License Agreements, RPR
shall have the right, in its sole discretion, but not the obligation to bring
such suit, in its own name, if possible and in Guilford's name, if required.
RPR shall be responsible for paying the costs and expenses of any suit brought
by it provided, however, that RPR shall receive a credit in the amount of fifty
percent (50%) of all such costs and expenses, which credit may be applied
against Net Sales Fees payable by RPR under this Agreement and any damages or
other monies awarded or received in settlement of such suit until such credit
is fully applied.   If any damages or other monies are awarded or received in
settlement of such suit, such amounts shall first be applied to pay any unpaid
credit in favor of RPR of the type described in the preceding sentence, and the
balance of such amounts shall be divided equally between RPR and Guilford.
Guilford will cooperate with RPR in any such suit and shall have the right to
consult with RPR and be represented by its counsel at its own expense.

                 3.       The provisions of this Section IV(I) shall survive
the expiration or sooner termination of the term of this Agreement.

         J.      CERTAIN COVENANTS OF GPI.  During the term of this Agreement,
Guilford and its Affiliates shall:

                                        i.     Inform RPR of all material
         written customer complaints, adverse reaction information or
         notifications, correspondence, etc., with respect to the use of the
         Product;

                                        ii.    Immediately notify RPR should
         it become aware of the Product infringing any patents, patent rights,
         patent applications, inventions, trademarks, service marks, trade
         names, copyrights, confidential information, trade secrets, or any
         other proprietary rights or processes of any other Person;





                                       42

<PAGE>   47
                                        iii.   Adhere in all material respects
         to all laws, rules and regulations applicable to the manufacture,
         storage, packaging and sale to RPR of the Product under this Agreement
         including, without limitation, all FDA Standards and all applicable
         portions of the NDA for the Product;

                                        iv.    Not appoint any other
         distributor in the Territory during the term of this Agreement except
         to the extent that any particular country within the Territory has
         reverted back to Guilford pursuant to Section III(C) hereof;

                                        v.     Refer promptly to RPR any leads
         concerning prospective customers in the Territory which come to the
         attention of GPI during the term of this Agreement;

                                        vi.    Keep RPR informed in reasonable
         detail of new developments and Improvements in or to the Product
         during the term of this Agreement;

                                        vii.   Procure and maintain in full
         force and effect during the term of this Agreement valid and
         collectible insurance policies in connection with GPI's activities as
         contemplated hereby which policies shall provide for the type of
         insurance and amount of coverage as is determined from time to time by
         the Governance Committee to be appropriate, and upon RPR's request,
         provide to RPR a certificate of coverage or other written evidence
         reasonably satisfactory to RPR of such insurance coverage;

                                        viii.  Comply with, perform, observe
         and enforce in all material respects the provisions of the GPI License
         Agreements;

                                        ix.    Not exercise its right to
         terminate (1) the M.I.T./Scios Nova License Agreement under Section
         15.4 of the M.I.T./Scios Nova License Agreement, or (2) the Scios
         Nova/GPI License Agreement under Section 5.3 of the Scios Nova/GPI
         License Agreement;

                                        x.     Use commercially reasonable
         efforts to enforce the provisions of the License and Distribution





                                       43

<PAGE>   48
         Agreement, dated as of October 13, 1995, between GPI and Orion
         Corporation Farmos including, without limitation, the provisions of
         Sections 7.4 and 7.5 thereof;

                                        xi.    Take all commercially
         reasonable actions necessary to continue the Orphan Drug status of the
         GLIADEL Product for as long as possible;

                                        xii.   Give RPR reasonable prior
         written notice of and the right to attend with GPI any meeting between
         GPI and the FDA relating to the Product or the manufacture of the
         Product; and

                                        xiii.  Provide RPR with a true and
         complete copy of each communication between GPI and the FDA which
         relates to the Product or the manufacture of the Product, and the
         right to review and participate in any response to any such
         communication.

         K.      CERTAIN COVENANTS OF RPR.  During the term of this Agreement,
RPR and its Affiliates shall:

                                        i.     Inform GPI of all material
         written customer complaints, adverse reaction information or
         notifications, correspondence, etc., with respect to the use of the
         Product;

                                        ii.    Immediately notify GPI should
         it become aware of the Product infringing any patents, patent rights,
         patent applications, inventions, trademarks, service marks or
         tradenames, copyrights, confidential information, trade secrets, or
         any other proprietary rights or processes of any other Person;

                                        iii.   Adhere to all laws, rules and
         regulations applicable to the marketing, distribution, promotion,
         advertising, sale, storage and packaging of the Product under this
         Agreement including, without limitation, all FDA Standards and all
         applicable portions of the NDA for the Product;

                                        iv.    Keep Guilford informed in
         reasonable detail of new developments and Improvements in or





                                       44

<PAGE>   49
         to the Product during the term of this Agreement, including, without
         limitation clinical and pre-clinical data;

                                        v.     Give GPI reasonable prior
         written notice of and the right to attend with RPR any meeting between
         RPR and the FDA relating to the Product or the manufacture of the
         Product; and

                                        vi.    Provide Guilford with a true
         and complete copy of each communication between RPR and the FDA which
         relates to the Product or the manufacture of the Product, and the
         right to review and participate in any response to any such
         communication.


                                   ARTICLE V

V.       OTHER COVENANTS.

         A.      HSR FILINGS.  GPI and RPR shall cooperate with one another in
(i) determining whether any filing of Notification and Report Forms under the
HSR Act is required in connection with the consummation of the transactions
contemplated by this Agreement, the Supply Agreement, the Stock Purchase
Agreement and the Loan Agreement, and (ii) preparing and making any such filing
and furnishing information required in connection therewith.  If such a filing
is required, each party shall be responsible for preparing and making its own
filing and each party shall be responsible for paying its own filing and other
fees, costs and expenses associated with making the filing.

         B.      ASSIGNMENT OF GLIADEL PRODUCT NDA.

                 1.       Upon receipt by Guilford of the milestone payments
described in Sections III(D)(3) and (4), GPI shall immediately take all
necessary and appropriate actions to assign the NDA for the GLIADEL Product in
its entirety to RPR.

                 2.       Upon the expiration or sooner termination of the term
of this Agreement, RPR shall immediately take all necessary and appropriate
actions to assign the NDA for the GLIADEL Product in its entirety back to GPI.





                                       45

<PAGE>   50
                 3.       RPR shall perform all obligations required under
applicable law for maintaining the NDA and the other Regulatory Filings that
RPR makes in Territory under this Agreement.

                 4.       RPR shall provide Guilford with a true and complete
copy of all Regulatory Filings made by RPR and all communications with the FDA,
and corresponding regulatory agencies in the Territory.

                 5.       RPR shall not make changes to the NDA for the GLIADEL
Product which would materially change the NDA, including, without limitation,
any changes in indication, packaging, labelling, without consulting with and
obtaining approval of GPI, except as required under 21 C.F.R. Section
314.70(c).

                 6.       RPR shall cooperate with GPI to make Regulatory
Filings on behalf of GPI in connection with or relating to the manufacture of
the Product or FDA Standards applicable to the manufacture of the Product or
GPI's manufacturing facility.

                 7.       If Guilford presents other polymer products which RPR
is not obligated to develop under this Agreement, and RPR turns down the
opportunity to develop same, and Guilford develops same into an IND, ANDA, NDA
or other Regulatory Filing in the United States and elsewhere in the Territory,
RPR agrees, as the assignee of the NDA for the GLIADEL Product and the holder
of and other Regulatory Filings and Regulatory Approvals relating to the
Product, (a) to allow Guilford to reference the NDA for the GLIADEL Product and
(b) to otherwise cooperate with Guilford's development of same.

                                   ARTICLE VI

VI.      MISCELLANEOUS.

         A.      INDEPENDENT CONTRACTOR.  In making and performing this
Agreement, the parties are acting and shall act as independent contractors.
Nothing in this Agreement shall be deemed to create an agency, joint venture or
partnership relationship between the parties hereto.  Neither party shall have
the authority to obligate the other party in any respect, and neither party
shall hold itself out as having any such authority.  All personnel of GPI
Holdings shall be solely employees of GPI Holdings and shall





                                       46

<PAGE>   51
not represent themselves as employees of GPI or RPR.  All personnel of GPI
shall be solely employees of GPI and shall not represent themselves as
employees of GPI Holdings or RPR.  All personnel of RPR shall be solely
employees of RPR and shall not represent themselves as employees of GPI
Holdings or GPI.

         B.      ASSIGNMENT.  Neither GPI Holdings, GPI nor RPR may assign or
otherwise transfer any of its rights or obligations hereunder without the prior
written consent of the other party.

         C.      BINDING EFFECT; BENEFITS.  This Agreement shall inure to the
benefit of and be binding upon the parties hereto and their respective
permitted successors and assigns.  Nothing contained herein shall give to any
other Person any benefit or any legal or equitable right, remedy or claim.

         D.      AMENDMENTS.  This Agreement may only be modified, amended or
supplemented by an instrument in writing executed by GPI Holdings, GPI and RPR.

         E.      WAIVERS.  No term or provision hereof will be considered
waived by either party, and no breach excused by either party, unless such
waiver or consent is in writing signed on behalf of the party against whom the
waiver is asserted.  No consent by either party to, or waiver of, a breach by
either party, whether express or implied, will constitute a consent to, waiver
of, or excuse of any other, different, or subsequent breach by either party.

         F.      NOTICES.  All notices, claims, certificates, requests, demands
an other communications hereunder shall be in writing and shall be delivered
personally or sent by facsimile transmission, air courier, or registered or
certified mail, return receipt requested, addressed as follows:

                 if to GPI or to GUILFORD to:

                          Guilford Pharmaceuticals Inc.
                          6611 Tributary Street
                          Baltimore, Maryland  21224
                          Attention: President and CEO
                          Fax: (410) 631-6338





                                       47

<PAGE>   52
                 if to GPI HOLDINGS to:

                          GPI Holdings, Inc.
                          222 Delaware Avenue
                          P.O. Box 2306
                          Wilmington, Delaware  19899
                          Attention: Daniel P. McCollom
                                            Vice President and Secretary
                          Fax: (302) 571-1750

                 if to RPR to:

                          Rhone-Poulenc Rorer Pharmaceuticals Inc.
                          500 Arcola Road
                          P.O. Box 1200
                          Collegeville, Pennsylvania 19428-0107
                          Attention: General Counsel
                          Fax: (610) 454-3807

or to such other address as the party to whom notice is to be given may have
furnished to the other parties in writing in accordance herewith.  Any such
communication shall be deemed to have been delivered (i) when delivered, if
delivered personally, (ii) when sent (with confirmation received), if sent by
facsimile transmission on a business day, (iii) on the first business day after
dispatch (with confirmation received), if sent by facsimile transmission on a
day other than a business day, (iv) on the second business day after dispatch,
if sent by air courier, and (v) on the fifth business day after mailing, if
sent by mail.

         G.      COUNTERPARTS.  This Agreement shall become binding when any
one or more counterparts hereof, individually or taken together, shall bear the
signatures each of the parties hereto.  This Agreement may be executed in any
number of counterparts, each of which shall be deemed an original as against
the party whose signature appears thereon, but all of which taken together
shall constitute but one and the same instrument.

         H.      HEADINGS.  The article and section headings contained in this
Agreement are for reference purposes only and shall not affect in any way the
meaning or interpretation of this Agreement.





                                       48

<PAGE>   53
         I.      GOVERNING LAW.  This Agreement, and any claims, disputes or
causes of action relating to or arising out of this Agreement, shall be
construed in accordance with and governed by the laws of the State of Delaware,
without giving effect to the conflict of laws principles thereof.

         J.      SEVERABILITY.  Any of the provisions of this Agreement which
are determined to be invalid or unenforceable in any jurisdiction shall be
ineffective to the extent of such invalidity or unenforceability in such
jurisdiction, without rendering invalid or unenforceable the remaining
provisions hereof or affecting the validity or enforceability of any of the
provisions of this Agreement in any other jurisdiction.

         K.      EXHIBITS.  The following Exhibits are attached to this
Agreement and made a part of this Agreement:

                 Exhibit           Description of Exhibit
                 -------           ----------------------
                                   
                   A                       Patents
                   B                       Loan Agreement
                   C                       Stock Purchase Agreement
                   D                       Supply Agreement
                   E                       M.I.T./Scios Nova License Agreement
                   F                       Scios Nova/GPI License Agreement

         L.      DISPUTES.

                 1.       Notwithstanding anything contained in this Agreement
or the Supply Agreement to the contrary, if any dispute arises between the
parties relating to or arising out of this Agreement, appropriate
representatives of the parties shall first use commercially reasonable efforts
to negotiate in good faith a resolution of the dispute as expeditiously as is
reasonably practicable.

                 2.       If such representatives of the parties are unable to
resolve the dispute within 15 business days after each party has been apprised
of the dispute, either party shall have the right, exercisable by delivering
written notice thereof to the other party, to refer the dispute to the Chief
Executive Officer of GPI and the President of Pharmaceutical Operations of RPR.
If either party exercises such right, such officers shall use





                                       49

<PAGE>   54
commercially reasonable efforts to negotiate in good faith a resolution of the
dispute as expeditiously as is reasonably practicable.

                 3.       If the dispute is not resolved within 20 business
days after the date that a party referred the matter to the Chief Executive
Officer of GPI and the President of the Pharmaceutical Operations of RPR (or
such other period of time as the parties may mutually agree), each party shall
have the right to initiate and pursue any remedy available to it at law or in
equity provided, however, that all claims, disputes or causes of action
relating to or arising out of this Agreement shall be brought, heard and
resolved solely and exclusively by and in a federal or state court situated in
Wilmington, New Castle County, Delaware.  Each of the parties hereto agrees to
submit to the jurisdiction of such courts and that such courts are a proper
venue for resolving all claims, disputes or causes of action relating to or
arising out of this Agreement.

         M.      INTEREST ON OVERDUE PAYMENTS.  Each party agrees to pay to the
other party interest at the Overdue Interest Rate (defined below) on all
payment obligations owed to such other party that are not paid within 15 days
after the due date for such payment, such interest to accrue from the 16th day
after the due date to the date of payment.  As used herein, the term "Overdue
Interest Rate" means the "Cost of Funds" (as defined in the Loan Agreement),
expressed as a per annum interest rate, plus three percent (3%) per annum.

         N.      ENTIRE AGREEMENT.  This Agreement, including all Exhibits
hereto, the Supply Agreement, the Stock Purchase Agreement and the Loan
Agreement, constitute the entire agreement between the parties relating to
subject matter of this Agreement and supersede all prior or simultaneous
representations, discussions, negotiations, and agreements relating to such
subject matter, whether written or oral, including without limitation, the
Confidentiality Agreement dated as of February 29, 1996 between GPI and RPR.





                                       50

<PAGE>   55
         IN WITNESS WHEREOF, duly authorized representatives of the parties
hereto have duly executed this Agreement as of the Effective Date.



                                RHONE-POULENC RORER
                                 PHARMACEUTICALS INC.



                                By: /s/ Timothy G. Rothwell
                                   --------------------------
                                   Name:  Timothy G. Rothwell
                                   Title: President



                                GUILFORD PHARMACEUTICALS INC.



                                By: /s/ Craig R. Smith, M.D.
                                   --------------------------
                                   Name:  Craig R. Smith, M.D.
                                   Title: President and Chief
                                          Executive Officer



                                GPI HOLDINGS, INC.



                                By: /s/ Daniel P. McCollom
                                   --------------------------
                                   Name:  Daniel P. McCollom
                                   Title: Vice President and
                                          Secretary





                                       51

<PAGE>   1
                                                                EXHIBIT 10.41

                      MANUFACTURING AND SUPPLY AGREEMENT


          MANUFACTURING AND SUPPLY AGREEMENT ("Agreement") dated as of June
13, 1996 ("Effective Date"), between RHONE-POULENC RORER PHARMACEUTICALS INC.,
a company with its principal office at 500 Arcola Road, Collegeville,
Pennsylvania 19426 ("RPR"), and GUILFORD PHARMACEUTICALS INC., a company with
its principal office at 6611 Tributary Street, Baltimore, Maryland 21224
("GPI").

          WHEREAS, GPI, its wholly-owned subsidiary GPI Holdings, Inc.
("Holdings," and together with GPI, "Guilford"), and RPR have entered into a
Marketing, Sales and Distribution Rights Agreement dated as of June 13, 1996
(the "Marketing Rights Agreement") granting to RPR exclusive rights to market,
advertise, promote, sell and distribute the Product in the Field throughout
the Territory (as each such term is defined below); and

          WHEREAS, GPI and RPR desire to enter into this Agreement under which
GPI will supply all of RPR's requirements of the Product to RPR, and RPR will
purchase all of its supply of the Product from GPI and Holdings wishes to join
in this Agreement for the limited purpose of acknowledging its consent to, and
agreement to be bound by the provisions of Article II, Article III.C. and
Article III.H. hereof.

          NOW THEREFORE, in consideration of the mutual covenants and
consideration set forth herein, the parties hereto, intending to be legally
bound, hereby agree as follows:

                                   ARTICLE I

I.   DEFINITION

     A.   "ACT" shall mean the Federal Food, Drug and Cosmetic Act, as
amended, and the regulations promulgated under such Act.

     B.   "AFFILIATE" shall mean, when used with respect to a Person, any
other Person directly or indirectly controlling, controlled by, or under
common control with the subject Person. For purposes of this Agreement,
"control" means the direct or indirect ownership of over 50% of the
outstanding voting securities of a person, or the right to receive over 50% of
the profits or earnings of a person, or the right to control the policy
decisions of a Person.

     C.   "BANKRUPTCY EVENT" shall mean the Person in question becomes
insolvent, or a receiver or custodian is appointed for such Person, or
voluntary or involuntary proceedings by or against such Person are instituted
in bankruptcy or under any insolvency law, or proceedings are instituted by or
against such Person for corporate reorganization or the dissolution of such
Person, which proceedings, if involuntary, shall 

<PAGE>   2
not have been dismissed within sixty (60) days after the date of filing, or
such Person makes an assignment for the benefit of its creditors, or
substantially all of the assets of such Person are seized or attached and not
released within sixty (60) days thereafter.

     D.   "CHANGE IN CONTROL" shall mean with respect to any Person:

          1.   The liquidation or dissolution of such Person or the sale or
other transfer by such Person (excluding transfers to subsidiaries) of all or
substantially all of its assets, if the same results in a change in the
ultimate beneficial ownership of the business conducted by such Person; or

          2.   The occurrence of a tender offer, stock purchase, other stock
acquisition, merger, consolidation, recapitalization, reverse split, sale or
transfer of assets or other transaction, as a result of which any Person or
group (as such terms are used in and under Section 13(d) of the Securities
Exchange Act of 1934, as amended) (i) becomes the beneficial owner (as defined
in Rule 13-d under such Act), directly or indirectly, of securities of such
Person representing more than 30% of the common stock of such Person or
representing more than 30% of the combined voting power with respect to the
election of directors (or members of any other governing body) of such
Person's then outstanding securities, (ii) obtains the ability to appoint a
majority of the Board of Directors (or other governing body) of such Person,
or (iii) obtains the ability to direct the operations or management of such
Person.

     E.   "FDA" shall mean the Food and Drug Administration of the United
States Department of Health and Human Services, or any successor agency
thereto.

     F.   "FDA STANDARDS" shall mean the Act, the facility license
requirements and the Current Good Manufacturing Practice regulations of the
FDA applicable to the Product or any manufacturing facility of GPI, and all
relevant guidelines of the FDA.

     G.   "FIELD" shall mean the treatment of tumors of the central nervous
system and treatment of cerebral edema.

     H.   "GLIADEL PRODUCT" shall mean Guilford's GLIADEL(R) wafer, PCPP:SA
with 3.85% BCNU, and any and all Improvements thereto.

     I.   "GPI LICENSE AGREEMENTS" shall mean the M.I.T./Scios Nova License
Agreement and the Scios Nova/GPI License Agreement.

     J.   "HIGH DOSE GLIADEL PRODUCT" shall mean any PCPP:SA product with a
BCNU dose higher than 3.85% which is (i) reasonably expected to have a more
advantageous efficacy profile than the GLIADEL Product and (ii) now or
hereafter owned or controlled by Guilford, and all Improvements to any such
product.  As of the Effective Date, Guilford is contemplating the development
of PCPP:SA with 20% BCNU for use in the Field.








                                     - 2 -

<PAGE>   3
     K.   "IMPROVEMENT" to a Product shall mean any and all inventions,
discoveries, developments, modifications and improvements, whether or not
patented or patentable, relating to such Product.  

     L.   "KNOW-HOW" shall mean all scientific and technical data,
instructions, processes, formulae, specifications, ingredient sources,
manufacturing procedures, methods and other information relating to the
design, composition, formulation, pre-clinical evaluation, clinical
evaluation, manufacture, use, sale, packaging, formulation or administration
of the Product, including, but not limited to NDAs, pharmacological,
toxicological, analytical, stability and clinical data, specifications and
drug master files and/or health registration dossiers and any other premarket
application or registration, owned or controlled at any time during the term
hereof by either party.

     M.   "LABELLING/PACKAGING SPECIFICATION" shall mean those specifications
provided pursuant to the provisions of Article II.D. but shall exclude
those labelling and/or packaging specifications required under any Regulatory
Approval of the Product

     N.   "LOAN AGREEMENT" shall mean the Loan Agreement, dated as of even
date herewith, between GPI and Rhone-Poulenc Rorer Inc., a Pennsylvania
Corporation.

     O.   "M.I.T./SCIOS NOVA LICENSE AGREEMENT" shall mean the License
Agreement, dated as of July 15, 1988, between Massachusetts Institute of
Technology ("M.I.T.") and the predecessor in interest to Scios Nova Inc., as
amended, between M.I.T. and Scios Nova Inc.

     P.   "NDA" shall mean a "New Drug Application," as defined in the Act,
and all supplements thereto.

     Q.   "NET SALES PRICE" shall mean, with respect to the Product, the gross
revenues derived from the sale or other transfer of a Unit of the Product by
RPR or its Affiliates or non-Affiliated distributors appointed by RPR and
permitted under the Marketing Rights Agreement to an un-Affiliated third party
end user at the end of the commercial distribution chain, (A) after
subtracting all bona fide trade and cash discounts, volume discounts, rebates,
to the extent actually paid, allowed or incurred on such sales or transfers,
and (B) taking into account all bona fide claims, refunds, returns and recalls
of the Product.  

     R.   "OTHER PCPP:SA/BCNU PRODUCTS" shall mean all PCPP:SA-based polymer
products containing BCNU, other than the GLIADEL Product, that are now or
hereafter during the term of this Agreement owned or controlled by Guilford,
including without limitation High Dose GLIADEL Product, and any and all
Improvements to any of the foregoing.

     S.   "PATENT(S)" shall mean (i) all of the patents and applications for
patents that are identified in Exhibit A to the Marketing Rights Agreement,
all patents which may 













                                     - 3 -

<PAGE>   4
be granted thereon, any U.S. or foreign counterparts thereof, as well as all
continuations, continuations-in-part, divisions, reissues, renewals,
reexaminations, extensions, patents of addition and patents of importation
thereof; (ii) any patent application of Guilford or any of its Affiliates
related to or based on any Know-How of Guilford or any of its Affiliates and
related to the Product that is developed during the term of this Agreement,
all patents which may be granted thereon, any foreign counterparts thereof, as
well as all continuations, continuations-in-part, divisions, reissues,
renewals, reexaminations, extensions, patents of addition and patents of
importation thereof; and (iii) all such patent applications and patents,
directly or indirectly owned, licensed or controlled by Guilford or any of its
Affiliates, which but for the rights granted herein, the manufacture, use or
sale of the Product would infringe a Valid Claim.

     T.   "PERSON" shall mean any corporation, partnership, joint venture,
other entity or natural person.

     U.   "PROCESS DESCRIPTION" shall mean, with respect to the Product,
manufacturing and control procedures and specifications, as well as such other
Know-How, technical specifications, instructions, processes and other
intellectual property and information which Guilford possesses and owns or
controls, and as shall be necessary in order to allow RPR to manufacture
and/or have manufactured for it the Product.  Such Process Descriptions shall
be sufficiently clear and detailed that it can be readily followed and carried
out by a skilled Person.

     V.   "PRODUCT" shall mean the GLIADEL Product and all Other PCPP:SA/BCNU
Products.

     W.   "PRODUCT SPECIFICATIONS" shall mean the Product specifications and
methods set forth in the manufacturing and control sections of the NDA
submitted to and approved by the FDA for the Product, including any labeling
requirements specified by the FDA, and such other specifications as may be
required in connection with any Regulatory Approval, and any amendments to
such specifications which may be mutually agreed upon and which shall be
incorporated herein.

     X.   "REGULATORY APPROVAL" shall mean, with respect to any country,
(i) filing for and receipt of all governmental and regulatory registrations
and approvals (including, but not limited to, approvals of all final Product
labeling) required for the marketing and sale of the Product for the
indication for which it is being marketed in such country, and (ii) the
receipt of reimbursement approvals and a reimbursement price acceptable to the
Operations Committee as defined in the Marketing Rights Agreement from the
national security system or other appropriate governmental or regulatory
authorities in such country, except in those countries where such
reimbursement approvals and reimbursement price are not granted by a
governmental or regulatory authority (such as the United States, as of the
Effective Date).

     Y.   "REGULATORY FILINGS" shall mean all applications, filings,
materials, 












                                     - 4 -

<PAGE>   5
studies, data and documents of any nature whatsoever filed with, prepared in
connection with or necessary to support any Regulatory Approval process in any
country or territory.

     Z.   "SCIOS NOVA/GPI LICENSE AGREEMENT" shall mean the License Agreement,
dated as of March 14, 1994, as amended, between Scios Nova Inc. and GPI, as
assigned to Holdings.

     AA.  "SPECIFICATIONS" shall mean the Product Specifications and the
Labelling/Packaging Specifications.

     AB.  "STOCK PURCHASE AGREEMENT" shall mean the Stock Purchase Agreement,
dated as of even date herewith, between GPI and RPR.

     AC.  "TERRITORY" shall mean the entire world, excluding Denmark, Finland,
Norway and Sweden.

     AD.  "UNIT" shall mean, in the current formulation of the GLIADEL
Product, one (1) PCPP:SA/3.85% BCNU wafer and for all other Products a unit
of sale of Product such that reconciliation of Invoice Price and Net Sales
Price as contemplated in this Agreement will be made based on the same unit of
sale.

     AE.  "VALID CLAIM" shall mean a claim in any issued and unexpired Patent
which has not been withdrawn, canceled, abandoned or disclaimed or held
invalid by a final decision by a court or other appropriate body of competent
jurisdiction from which no appeal is available.





































                                     - 5 -

<PAGE>   6
                                  ARTICLE II

II.       SUPPLY OF THE PRODUCT

     A.   EXCLUSIVE SUPPLY OF THE PRODUCT.  Except as specifically provided by
the provisions of this Agreement, during the term of this Agreement, GPI shall
supply RPR with all of its requirements of the Product, and RPR shall purchase
all of its requirements of the Product from GPI.

     B.   FORECASTS, ORDERS, PRICES AND TERMS.

          1.   RPR shall provide GPI by the first day of each month with a
written twenty-four (24) month rolling forecast, by month, of its requirements
of Product.  All forecasts shall be prepared in good faith in order to
facilitate GPI's manufacture and shipment of the Product in compliance with
this Agreement.

          2.   Firm purchase orders for Product shall be placed by RPR with
not less than one hundred twenty (120) days lead time prior to the shipment or
other release date(s) requested by RPR unless GPI agrees to and accepts an
order for delivery in less than one hundred twenty (120) days.  For the first
twelve (12) months of this Agreement, GPI will not be obligated to accept
orders that are less than 60% or more than 120% of the quantities forecast for
the first twelve (12) months of the rolling forecast.  After the first twelve
(12) months of this Agreement, GPI will not be obligated to accept orders that
are less than 80% nor more than 120% of the quantities forecast in the first
twelve (12) months of the relevant rolling forecast.  By way of an example,
RPR will submit a 24 month forecast at month 1; GPI will not be obligated to
accept orders during the first 12 months of such forecast outside the relevant
band (60%-120% during the first year of the Agreement, 80%-120% thereafter;
the "Relevant Band") without GPI's consent; in month 2, RPR will submit
another 24 month forecast, in which months 2 through 12 remain unchanged from
the preceding month's forecast, and fixing a forecast for month 13, outside
the Relevant Band of which GPI will not be obligated to accept an order
without GPI's  consent; in month 3, RPR will submit another 24 month forecast,
in which months 3 through 13 remain unchanged from the preceding month's
forecast, and fixing a forecast for month 14, outside the Relevant Band of
which GPI will not be obligated to accept an order without GPI's consent; and
so forth.  For orders outside of the Relevant Band, GPI and RPR will mutually
discuss these orders, which are subject to GPI's acceptance.  GPI will use
commercially reasonable efforts to attempt to fill orders outside the Relevant
Band.  It is understood that, subject to the duties of RPR under the Marketing
Rights Agreement to use commercially reasonable efforts to promote the sale of
the Products, RPR has no obligation to order any minimum quantities of
Products.  Each purchase order shall include (a) the quantity of Product to be
purchased; (b) the requested delivery date(s) therefor; (c) any relevant
shipping instructions; and (d) any other information dictated by the
circumstances of the order.  GPI may require RPR to place orders in reasonable
minimum batch sizes, as mutually agreed by the parties.  To 















                                     - 6 -

<PAGE>   7
the extent of any conflict or inconsistency between this Agreement and any
purchase order, purchase order release, confirmation, acceptance or any
similar document, the provisions of this Agreement shall govern.

          3.   GPI shall accept purchase orders issued to it by RPR that are
within the ranges specified above by written notification to RPR within ten
(10) days after receipt of such purchase order.  

          4.   GPI shall manufacture and ship Product pursuant to RPR's
purchase orders accepted by GPI.  Delivery by GPI of quantities that are not
less than 80% nor more than 120% of the quantities ordered shall be accepted
by RPR as satisfactory performance under this Agreement.

          5.   The purchase price for each Unit ("Purchase Price") purchased
from GPI shall be twenty percent (20%) of the Net Sales Price as determined by
Article II.B. 6 and 7 below.

          6.   The parties shall use the Invoice Price (defined below) for
purposes of invoicing and shipping the Product.  The charges applicable to
each shipment of Product shall be separately invoiced by GPI at the time of
shipment, or if shipment is made into quarantine as contemplated by Article
II.E.1., then, at the time of release of such shipment from quarantine
pursuant to delivery by GPI to RPR of a certificate of analysis relating to
such shipment.  Payment shall be made within thirty (30) days after RPR's
receipt of a properly executed invoice.  As used herein, the term "Invoice
Price" shall mean the invoice price for the Product when shipped by GPI to
RPR, which Invoice Price shall initially be twenty percent (20%) of the
estimated Net Sales Price for the Units shipped, as estimated in good faith by
RPR, and which may be changed by GPI on a quarterly basis to an amount equal
to twenty percent (20%) of the actual Net Sales Price of the Units shipped
during the calendar quarter immediately preceding the calendar quarter in
which the change is made.

          7.   The parties shall, on a calendar quarter basis, reconcile the
Invoice Price initially charged to RPR to the Purchase Price as follows.  RPR
shall provide to GPI no later than the thirtieth (30th) day after the end of
each calendar quarter RPR's calculation (along with a summary of the sales
and/or transfers on which such calculation is based) of the total Net Sales
Prices for the Products along with a calculation of the difference between 20%
of such amount and the actual Invoice Prices charged.  The total Net Sales
Prices shall be based upon the total Product (excluding Units shipped in
accordance with Article II.B.8. of this Agreement) sold by RPR, its
Affiliates, or un-Affiliated distributors permitted by the Marketing Rights
Agreement during such calendar quarters.  If such calculation indicates that
the aggregate Invoice Prices exceeded the aggregate Purchase Prices during
such quarters, then (1) RPR may credit such excess amount against RPR's future
payment obligation to GPI for purchase of Products under this Agreement or (2)
if there are no more future payment obligations therefor, GPI shall 
















                                     - 7 -

<PAGE>   8
issue a check to RPR within ten (10) business days of receipt of such
calculation of such amount or, at RPR's option.  If such calculation indicates
that the aggregate Invoice Prices was less than the aggregate Purchase Prices
during such quarters, then RPR shall submit such amount to GPI when it
provides such calculation to GPI.  For purposes of this Agreement, calendar
quarters commence on each January 1, April 1, July 1 and October 1.

          8.   Notwithstanding the foregoing or any other provision of this
Agreement to the contrary, GPI shall supply those quantities of Product needed
from time to time (i) in connection with any clinical study that is conducted
by or on behalf of RPR and has been approved by the Governance Committee (as
defined in the Marketing Rights Agreement), at no charge to RPR, (ii) to
fulfill requests made that are approved by the Governance Committee in
accordance with the compassionate use policies approved by such Governance
Committee at no charge to RPR, and (iii) to fulfill requests made on behalf of
uninsured or financially needy patients, where the Governance Committee has
determined that fulfilling such requests is appropriate under the prevailing
circumstances, at one-half of the Purchase Price (i.e. at 10% of Net Sales
Price).

          9.   All shipments of the Product shall be shipped to one RPR U.S.
distribution center which shall be mutually agreed by the parties and a single
second site for non-U.S. distribution which shall also be mutually agreed by
the parties.  The parties will work together to develop mutually acceptable
procedures for packaging and other logistical issues relating to the Product
to be marketed outside the U.S.  All shipments shall be F.O.B. GPI's U.S.
manufacturing facility or other shipping point, and shall be accompanied by a
packing slip which describes the Product, states the purchase order number and
shows the shipment's destination (as specified above).  Title and risk of loss
or damage to any Product sold by GPI to RPR hereunder shall pass to RPR upon
delivery by GPI to the carrier at the F.O.B. point.  RPR shall use its best
efforts to designate a carrier at the time of entry of each purchase order
with GPI, provided, however, that if RPR fails to designate a carrier on its
purchase order, GPI may select a carrier for the account and risk of RPR.  For
the purposes of this Agreement, a timely shipment shall be a shipment made by
GPI, through RPR's carrier, a common carrier, or other method designated by
and for the account and at the expense of RPR no later than ten (10) business
days from the shipment date set forth in the applicable purchase order.


























                                     - 8 -

<PAGE>   9

     C.   RECORDS AND AUDIT RIGHTS.

          1.   RPR shall maintain, and cause to be maintained by its
Affiliates and other parties to which RPR or its Affiliates may grant
marketing, sales and distribution rights under the Marketing Rights Agreement,
complete and accurate books and records with respect to the Net Sales Price,
Purchase Price and Invoice Price payable by RPR under this Agreement and the
transactions contemplated herein, along with such other reconciliation and
other information as may be necessary to calculate and verify all
consideration paid or payable by RPR under this Agreement and the transactions
contemplated herein.  RPR shall maintain the books and records in accordance
with generally accepted accounting principles and for a period of three (3)
years after the submission of each report required to be submitted by RPR to
GPI under this Agreement; provided, however, that if there is a good faith
dispute between the parties continuing at the end of any such three (3) year
period with respect to such books or records, then the time period for RPR to
maintain such books and records under dispute shall be extended until such
time as the dispute is finally resolved.

          2.   GPI shall have the right to nominate an independent accountant
acceptable to and approved by RPR (which approval shall not be unreasonably
withheld or delayed) who shall have access to the relevant RPR records during
reasonable business hours for the purposes of verifying, at GPI's expense, the
Net Sales, the Net Sales Price, Purchase Price and Invoice Price provided for
in this Agreement for any of the preceding three (3) years, but this right may
not be exercised more than once in any year.  GPI shall solicit or receive
only information relating to the accuracy of the information and the payments
made.  RPR shall be entitled to withhold approval of an accountant which GPI
nominates unless the accountant agrees to sign a confidentiality agreement
with RPR which shall obligate such accountant to hold the information he
receives from RPR in confidence, except for information necessary for
disclosure to GPI, necessary to establish the accuracy of the reports and
amounts paid to GPI.  Such audit rights shall survive for three (3) years
after the expiration or termination of this Agreement.  

          3.   Any underpayment shall be paid within thirty (30) days of the
delivery of a detailed written accountant's report to the parties hereto.  Any
overpayment shall be credited to the next payment due from RPR.  If no further
payments from RPR will be due then a refund will be made within sixty (60)
days of the audit.  Notwithstanding Article II.C.2. above, if any audit as
contemplated above shows an underpayment by RPR of an amount greater than ten
percent (10%) of the amount paid, the fees and costs of such audit shall be
for the account of RPR.

          4.   The provisions of this Article II.C. shall survive the 
expiration or sooner termination of the term of this Agreement.

     D.   LABELLING AND PACKAGING.

          1.   RPR shall supply to GPI in ready-to-use form the labels and














                                     - 9 -

<PAGE>   10
package inserts for the Product, in volumes sufficient to fulfill all orders
placed by RPR, together with any applicable Specifications in order for GPI to
perform quality control procedures to ensure conformity with all applicable
Regulatory Approvals, within a reasonable period of time prior to the first
and each subsequent order by RPR, which period shall not in any event be less
than sixty (60) days prior to the shipment date of finished Product specified
in RPR's firm order.  When provided, the Labelling/Packaging Specifications
shall become part of the Specifications of the Product.  RPR represents and
warrants that the labels and other Labelling/Packaging Specifications provided
to GPI shall be in full conformity with Regulatory Approvals and all
applicable laws and regulations.  On the packaging for the Product, RPR shall
identify GPI as the manufacturer of the Product.

          2.   In the event some or all of the Labelling/Packaging
Specifications are required for GPI's Regulatory Filings with the FDA for the
Product, then RPR shall provide such portion of the Labelling/Packaging
Specifications as may be required for such Regulatory Filings.  GPI shall use
its best efforts to provide RPR at least thirty (30) days advance notice of
its requirements for the Regulatory Filings, provided that RPR agrees to use
commercially reasonable efforts and to cooperate with GPI to supply
Labelling/Packaging Specifications for Regulatory Filings as soon as
practicable.

          3.   GPI acknowledges that RPR is the exclusive owner of and has all
rights to the trademarks, copyrights, plans, ideas, names, slogans, artwork
and all other intellectual property that appear on or are otherwise used by
RPR in connection with the Product, except as provided in the next sentence.
RPR acknowledges that such ownership rights do not extend to the trademark
GLIADEL(R), the names "Guilford Pharmaceuticals Inc.", "GPI Holdings Inc." or
variations thereof or any of GPI's or GPI Holdings, Inc.'s proprietary
formulae or other proprietary information or intellectual property rights and
nothing in this Agreement shall be considered a license or sublicense of any
such rights, nor shall such ownership rights extend to the labelling and
packaging requirements specified by the FDA or any other governmental or
regulatory authority.





























                                    - 10 -

<PAGE>   11
     E.   INSPECTION OF SHIPMENTS.

          1.   GPI will be responsible for quality control testing and formal
release of Product, and will provide RPR with a certificate of analysis for
all batches of Product shipped to RPR in accordance with the NDA.  Delivery of
any Product by GPI to RPR shall constitute a certification by GPI that the
Product conforms to the Specifications, except in the case of quarantined
shipments, described below.  GPI may ship Product to RPR directly from GPI's
vendor providing sterilization services, and RPR agrees to accept delivery for
Product, in quarantine.  RPR shall store all Product in controlled conditions
as specified in the Product Specifications and Labelling/Packaging
Specifications.  In the event a shipment is delivered in quarantine, RPR will
extract and deliver to GPI samples of the quarantined shipment pursuant to
agreed-upon procedures for quality control testing by GPI.  Upon satisfactory
completion of such quality control procedures, GPI will release such shipment
by delivering to RPR a written notice releasing such shipment, accompanied by
a certificate of analysis pertaining to such shipment.  In the case of
quarantined shipments, such release by GPI will constitute a certification by
GPI that the Product conforms to the Specifications.  GPI will have the right
at reasonable times and on reasonable notice to inspect RPR's distribution
center for compliance with the aforementioned conditions for storage and
treatment of quarantined shipments, but such right may not be exercised more
than once in any 12 month period.  Such inspection shall be conducted at GPI's
sole cost and expense in a manner so as to minimize disruption of RPR's
business operations.

          2.   Upon receipt of each shipment of Product by RPR at the
destination specified in the shipping instructions, RPR agrees to inspect
promptly each shipment to determine whether any portion of it does not conform
with the applicable Purchase order or the Specifications.  In the event that
any portion of any shipment fails to conform to the applicable purchase order,
the Specifications or the warranties set forth in Article III.B.1. hereof, 
RPR may reject the non-conforming portion of Product by giving written notice
to GPI within thirty (30) days of RPR's receipt of such shipment or, if the
shipment is a quarantined shipment as specified above, after receipt of a
certificate of analysis as so specified.  Such notice shall specify the manner
in which Product fails to meet the applicable purchase order, Specifications
or warranties.  Failing such notification, RPR shall be deemed to have accepted
the shipment of Product, except as to latent defects which could not have been
detected in such 30 day period.  Such acceptance by RPR shall not be deemed to
be a waiver by RPR of any of the representations or warranties made by GPI in
Article III.B.1. hereof.

          3.   Upon giving GPI such notification of non-conformance, RPR shall
provide GPI with a reasonable opportunity to inspect the Product and make any
appropriate adjustment or replacement.  In all cases in which the parties agree
that there is a shortage or non-compliance, GPI, at its own cost, shall
forthwith make up the shortage, if appropriate, or replace any non-conforming
Product, as directed by RPR, to be shipped to RPR at GPI's expense.  Any non-
conforming Product shall, at GPI's direction and 














                                    - 11 -

<PAGE>   12
expense, either be returned by RPR to GPI or destroyed by RPR (and certified
as so destroyed by RPR).  Any dispute regarding the proper rejection of a
shipment shall be submitted for testing to an independent laboratory to be
mutually agreed upon.  If the independent laboratory finds that the shipment
in question or any part of it does not comply in all material respects with
the Specifications or is otherwise defective, GPI shall promptly and without
cost to RPR, supply RPR with the same quantity of Product as the quantity
found to be in non-compliance or defective.  GPI's supply of substitute
Product which conforms to the Specifications shall satisfy and discharge any
claims or potential claims of RPR against GPI with respect to non-complying
Product in that shipment.  During the pendency of a dispute that requires
settlement by an independent laboratory, GPI shall promptly replace the
portion of the shipment under dispute until such time as the dispute is
resolved.

          4.   The parties agree to be bound by the laboratory's report.  Costs
of the independent laboratory's activities shall be borne by RPR if the
Product in question is found to comply with the Specifications, and by GPI if
such Product is found not to comply with the Specifications.  GPI shall
complete the adjustment or replacement within sixty (60) days of proper
notification by RPR, and shall credit RPR's account for the Product rejected.

     F.   INSPECTION OF THE PRODUCT FACILITY.

          1.   RPR shall have the right, upon reasonable advance notice and
during regular business hours, to inspect and audit the facilities (including
any facilities of sub-contractors) being used by GPI for production of the
Product to assure compliance with applicable laws, rules and regulations,
including without limitation FDA Standards, applicable portions of the NDA for
the Product and GPI quality control procedures ("Relevant Standards").  Such
inspection and audit shall be conducted at RPR's sole cost and expense in a
manner so as to minimize disruption of GPI's business operations.

          2.   GPI shall, within sixty (60) days after GPI's receipt of
written notice from RPR detailing any deficiencies which may be noted in any
such audit which relate to the Relevant Standards use good faith efforts to
remedy such deficiencies, and submit a plan to the Governance Committee
outlining steps proposed to be taken.  Failure by GPI to submit such a plan
within such 60-day period shall give RPR the right to take the steps specified
in Article III.H.7.  Any plan timely submitted shall meet the requirements of
the second sentence of Article III.H.2. and shall be treated as a Recovery
Plan for purposes of Article III.H., including the provisions of Article
III.H. 5, 6, 7, 8 and 9.

          3.   GPI acknowledges that the provisions of this Article II.F.
granting RPR certain audit rights shall in no way relieve GPI of any of its
obligations under this Agreement, nor shall such provisions require RPR to
conduct any such audits.  















                                    - 12 -

<PAGE>   13
     G.   RECALLS.

          In the event any governmental agency having applicable jurisdiction
shall order, or it shall otherwise become necessary to perform, any corrective
action or market action with respect to the Product supplied hereunder,
including any recall, field correction, market withdrawal, stock recovery,
customer notice or restriction, RPR shall have the exclusive responsibility to
appropriately manage such action and, if the cause of such corrective action
or market action is due to a breach by GPI of any of its warranties,
representations, obligations, covenants or agreements contained herein, then
GPI shall be liable, and shall reimburse RPR for the reasonable costs of such
action, including the cost of the Product affected thereby and reasonable
attorneys' fees and expenses.  If the cause of such corrective action or
market action is due to a breach by RPR of any of its warranties,
representations, obligations, covenants or agreements contained herein, then
RPR shall be liable for the costs of such action.  If each of GPI and RPR are
partly responsible for such breach, each party shall be responsible for its
proportionate share of such costs.  If neither party is responsible for such
breach, both parties will share equally the costs.  RPR will also be
exclusively responsible for handling all customer complaints, inquiries and
the like, and GPI will appropriately cooperate with RPR concerning the same. 
The provisions of this Article II.G. shall survive the expiration or sooner
termination of the term of this Agreement.

     H.   INITIAL FORECAST AND MANUFACTURING PLAN.

          1.   Within thirty (30) days of the date of this Agreement, RPR
shall deliver to GPI the first 24 month rolling forecast described in Article
II.B.1. above.  Within ninety (90) days of the date of this Agreement, and in
any case no sooner than sixty (60) days following GPI's receipt from RPR of
such initial forecast, GPI will submit to RPR its one and two year
manufacturing capability plan (the "Manufacturing Plan") for completing
facilities for producing the GLIADEL Product in conformity with the terms and
conditions of this Agreement.  Such Manufacturing Plan may assume that
availability of proceeds from the loans under the conditions contained in the
Loan Agreement.  RPR shall promptly review the Manufacturing Plan and confer
with GPI respecting any mutually agreeable revisions to the Manufacturing
Plan.  Notwithstanding RPR's review of such procedures, it is expressly
acknowledged that GPI shall be solely responsible for complying with its
obligations under this Agreement.

          2.   At reasonable intervals after the date hereof, GPI shall allow
RPR to audit or have audited the manufacturing facilities that GPI shall use
to produce the GLIADEL Product to confirm that such facilities are adequate to
meet the requirements of RPR's current rolling 24 month forecast and the
Manufacturing Plan.  Such audit where possible will take place at the same
time as any audit contemplated in Article II.F. above.  
















                                    - 13 -

<PAGE>   14
                                  ARTICLE III

III. GENERAL TERMS AND CONDITIONS

     A.   CONFIDENTIALITY.  All confidential information of either party
disclosed to the other shall be governed by the confidentiality provisions of
Section IV.A of the Marketing Rights Agreement.

     B.   REPRESENTATIONS AND WARRANTIES.

          1.   GPI represents and warrants to RPR that:

               a.   All Product supplied by GPI to RPR shall be manufactured
                    in accordance with and shall conform to the Specifications
                    assuming handling and storage of such Product in
                    accordance with the Specifications following delivery of
                    such Product to a commercial carrier at GPI's shipping
                    point;

               b.   All Product supplied by GPI to RPR shall be manufactured
                    in accordance with all applicable laws, rules and
                    regulations including, without limitation, all FDA
                    Standards and all applicable portions of the NDA for the
                    Product;

               c.   All Product supplied by GPI to RPR shall not be
                    adulterated or misbranded within the meaning of Section
                    301 of the Act; and no Product shall be or become an
                    article which may not be introduced into interstate
                    commerce under the provisions of Section 505 of the Act;

               d.   All Product shall be sold to RPR free and clear of any
                    liens, claims and encumbrances of any nature except as
                    contemplated herein and the GPI License Agreements,
                    provided that nothing herein shall limit GPI from
                    financing its inventory via encumbrances thereon until the
                    point of delivery of Product to a commercial carrier
                    F.O.B. GPI's shipping point;

               e.   This Agreement, when executed and delivered by GPI, will
                    be the legal, valid and binding obligation of GPI,
                    enforceable against GPI in accordance with its terms,
                    except as such enforceability may be limited by bankruptcy
                    laws and other similar laws affecting creditors' rights
                    generally and by general principles of equity;

               f.   Upon compliance by the parties with any applicable
                    requirements of the HSR Act, the execution, delivery and
                    performance of this Agreement by GPI do not and will not
                    (i) conflict with, or constitute a breach or default
                    under, its charter documents or any material agreement,
                    contract, 
















                                    - 14 -

<PAGE>   15
                    commitment or instrument to which it is a party, (ii)
                    violate any provision of law, statute, rule or regulation
                    or any ruling, writ, injunction, order, judgment or decree
                    of any court, administrative agency or other governmental
                    body, or (iii) require the consent, approval or
                    authorization of, or notice, declaration, filing or
                    registration with, any third party or any governmental or
                    regulatory authority; and

               g.   There is no action or proceeding pending or, insofar as
                    GPI knows, threatened against GPI or any of its Affiliates
                    before any court, administrative agency or other tribunal
                    which could impact upon GPI's right, power and authority
                    to enter into this Agreement, to carry out its obligations
                    hereunder, or which might have. a material adverse effect
                    on GPI's business or condition, financial or otherwise, or
                    GPI's operation of any business.















































                                    - 15 -

<PAGE>   16
          2.   RPR represents and warrants to GPI that:

               a.   This Agreement, when executed and delivered by RPR, will
                    be the legal, valid and binding obligation of RPR,
                    enforceable against RPR in accordance with its terms,
                    except as such enforceability may be limited by bankruptcy
                    laws and other similar laws affecting creditors' rights
                    generally and by general principles of equity;

               b.   Upon compliance by the parties with any applicable
                    requirements of the HSR Act, the execution, delivery and
                    performance of this Agreement by RPR do not and will not
                    (i) conflict with, or constitute a breach or default
                    under, its charter documents or any material agreement,
                    contract, commitment or instrument to which it is a party,
                    (ii) violate any provision of law, statute, rule or
                    regulation or any ruling, writ, injunction, order,
                    judgment or decree of any court, administrative agency or
                    other governmental body, or (iii) require the consent,
                    approval or authorization of, or notice, declaration,
                    filing or registration with, any third party or any
                    governmental or regulatory authority; and

               c.   There is no action or proceeding pending or, insofar as
                    RPR knows, threatened against RPR or any of its Affiliates
                    before any court, administrative agency or other tribunal
                    which could impact upon RPR's right, power and authority
                    to enter into this Agreement, to carry out its obligations
                    hereunder, or which might have. a material adverse effect
                    on RPR's business or condition, financial or otherwise, or
                    RPR's operation of any business.

          3.   EXCEPT FOR THE EXPRESS WARRANTIES CONTAINED IN THIS AGREEMENT,
NEITHER GPI NOR RPR MAKES ANY WARRANTIES OR REPRESENTATIONS, EXPRESS OR
IMPLIED, IN FACT OR IN LAW, INCLUDING ANY IMPLIED WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.

          4.   The provisions of this Article III.B. shall survive the
expiration or sooner termination of the term of this Agreement.

     C.   INDEMNIFICATION.

          1.   In order to distribute among themselves the responsibility for
claims arising out of this Agreement, and except as otherwise specifically
provided for herein, the parties agree as follows:

               a.   Each of GPI and GPI Holdings, jointly and severally, shall

















                                    - 16 -

<PAGE>   17
     defend, indemnify and hold RPR, its Affiliates, and their respective
     officers, directors, agents, employees and shareholders (collectively,
     "RPR Indemnitees") harmless, from and against, any and all losses,
     obligations, liabilities, penalties, and damages (including but not
     limited to compensatory and punitive damages), costs and expenses
     (including reasonable attorneys' fees), which the RPR Indemnitees may
     incur or suffer, and all deficiencies, actions (including without
     limitation, any proceedings to establish insurance coverage), claims,
     suits, legal, administrative, arbitration, governmental or other
     proceedings or investigations, and judgments, with which any of them may
     be faced arising out of (1) any breach by GPI of any representation or
     warranty made by GPI in this Agreement or any breach by GPI or GPI
     Holdings in the performance or observation of any covenant, agreement,
     obligation or provision in this Agreement to be performed or observed by
     GPI or GPI Holdings; (2) any negligent or otherwise tortious act or
     omission by GPI or GPI Holdings in connection with the performance or
     observation of any covenant, agreement, obligation or provision in this
     Agreement to be performed or observed by GPI or GPI Holdings; and (3) the
     enforcement by the RPR Indemnitees of their rights under this Article
     IIIC.1.a.  

               b.   RPR shall defend, indemnify and hold each of GPI and GPI
     Holdings, its Affiliates, and their respective officers, directors,
     agents, employees and shareholders (collectively, "GPI Indemnitees")
     harmless, from and against, any and all losses, obligations, liabilities,
     penalties, and damages (including but not limited to compensatory and
     punitive damages), costs and expenses (including reasonable attorneys'
     fees), which the GPI Indemnities may incur or suffer, and all
     deficiencies, actions (including without limitation, any proceedings to
     establish insurance coverage), claims, suits, legal, administrative,
     arbitration, governmental or other proceedings or investigations, and
     judgments, with which any of them may be faced arising out of (1) any
     breach by RPR of any representation or warranty made by RPR in this
     Agreement or any breach by RPR in the performance or observation of any
     covenant, agreement, obligation or provision in this Agreement to be
     performed or observed by RPR; (2) any negligent or otherwise tortious act
     or omission by RPR in connection with the performance or observation of
     any covenant, agreement, obligation or provision in this Agreement to be
     performed or observed by RPR; and (3) the enforcement by the GPI
     Indemnitees of their rights under this Article III.C.1.b.  

               c.   If any action, claim, suit, proceeding or investigation
     arises as to which a right of indemnification provided in this Article
     III.C.1. applies, the GPI Indemnitee or RPR Indemnitee, as the case may
     be (the "indemnified party"), shall promptly notify the party obligated
     under this Article III.C.1. to indemnify the indemnified party (the
     "indemnifying party") thereof in writing, and allow the indemnifying
     party and its insurers the opportunity to assume direction and control of
     the defense against such action, claim, suit, proceeding or
     investigation, at its sole expense, including without limitation, the
     settlement thereof at the sole 













                                    - 17 -

<PAGE>   18
     option of the indemnifying party or its insurers to the extent that the
     indemnified party's liability is not thereby invoked.  The indemnified
     party shall cooperate with the indemnifying party and its insurer in the
     disposition of any such matter and the indemnified party will have the
     right to participate in the defense of any action, claim, suit,
     proceeding or investigation as to which this Article III.C.1. applies,
     with separate counsel at its election and at its own expense.  If the
     indemnifying party fails or declines to assume the defense of any such
     action, claim, suit, proceeding or investigation within thirty (30) days
     after notice thereof, the indemnified party may assume the defense
     thereof for the account and at the risk of the indemnifying party.  The
     indemnifying party shall pay promptly to the indemnified party any
     losses, obligations, liabilities, penalties, damages, judgments,
     reasonable costs and expenses (including reasonable legal fees) to which
     the indemnity under this Article III.C.1. relates, as incurred.  

          2.   The parties desire to separately allocate between themselves
the risks and costs of any product liability claims from third parties with
respect to the Product (whether related to the safety or efficacy of the
Product or arising out of alleged defects in materials, design or workmanship
of the Product or the use, marketing, advertising, promotion, or distribution
of the Product, but excluding those claims (1) for which GPI and GPI Holdings
are obligated to defend, indemnify and hold the RPR Indemnities harmless under
Article III.C.1.a., and (2) for which RPR is obligated to defend, indemnify
and hold the GPI Indemnities harmless under Article III.C.1.b.) (hereafter, a
"Product Liability Claim").  Any losses, obligations, liabilities, penalties,
and damages (including but not limited to compensatory and punitive damages),
costs and expenses (including reasonable attorneys' fees), arising out of a
Product Liability Claim shall be shared equally by RPR and Guilford.  If
either party becomes aware of a Product Liability Claim, it shall promptly
notify the other party of such matter, and provide copies of any notices,
claims, letters or other information which such party received or possesses in
connection with such Product Liability Claim.  Each party shall reasonably
cooperate with the other party with respect to the defense and resolution of
any such Product Liability Claim.  

          3.   The provisions of this Article III.C. shall survive the
expiration or sooner termination of the term of this Agreement.  

     D.   TERM.

          1.   Subject to Article III.D.3. and 4. below, the term of this
Agreement shall commence on the Effective Date and shall continue on a
country-by-country basis, subject to the respective termination rights of RPR
and GPI expressly set forth in this Agreement, until the termination of the
Marketing Rights Agreement for any reason.

          2.   The following shall survive the expiration or sooner
termination of the term of this Agreement:  any payment obligations of the
parties hereunder accruing prior 














                                    - 18 -

<PAGE>   19
to the date of expiration or termination; and any other provision herein
expressly surviving expiration or termination or necessary to interpret the
rights and obligations of the parties in connection with the expiration or
termination of the term of this Agreement.

     3.   In the event of a Change in Control of GPI, RPR shall have the right
to terminate this Agreement on 30 days' notice.

     4.   If on or before the first anniversary of the Effective Date, RPR has
not received a copy of (a) the written approval letter from the FDA for the
Regulatory Approval of the GLIADEL Product for the indication of recurrent
form(s) of malignant glioma, including glioblastoma multiforme, in the United
States (which Regulatory Approval allows the release of the GLIADEL Product
into commerce), or (b) the written approval letter from the FDA for the
Regulatory Approval of the GLIADEL Product for the indication of form(s) of
malignant glioma, including glioblastoma multiforme (unqualified by any
limitation to the recurrent form(s) or malignant glioma), in the United
States, RPR shall have the right to terminate the term of this Agreement,
exercisable by giving Guilford thirty (30) days prior written notice thereof.

     E.   EVENTS OF DEFAULT.

          1.   The occurrence of any one or more of the following acts, events
or occurrences shall constitute an "Event of Default" under this Agreement:

               i.   either party becomes the subject of a Bankruptcy Event; or

               ii.  either party breaches any material provision of this
                    Agreement, the Marketing Rights Agreement, the Stock
                    Purchase Agreement or the Loan Agreement, or defaults in
                    the performance or observance of any material provision of
                    this Agreement, the Marketing Rights Agreement, the Stock
                    Purchase Agreement or the Loan Agreement, and fails to
                    remedy such breach or default within sixty (60) days after
                    receipt of notice thereof (except in the case of a failure
                    to pay any amounts due, in which event the default if such
                    payment is not received within 10 business days of the due
                    date, shall give rise to an Event of Default unless the
                    parties otherwise agree).

          2.   Notwithstanding the foregoing Article III.E.1.ii., in the event
of a breach or default which cannot be remedied within such sixty (60) day
period (other than a failure to make payment as provided herein or to supply
the Product as required hereunder), so long as the breaching/defaulting party
is diligently attempting to remedy such breach or default, an Event of Default
shall not have occurred until four (4) months after notice of such breach or
default and only if such breach or default is not cured during such period.

















                                    - 19 -

<PAGE>   20
          3.   Each party agrees to pay to the other party interest at the
Overdue Interest Rate (defined below) on all payment obligations owed to such
other party that are not paid within 15 days after the due date for such
payment, such interest to accrue from the 16th day after the due date to the
date of payment.  As used herein, the term "Overdue Interest Rate" means the
"Cost of Funds" (as defined in the Loan Agreement), expressed as a per annum
interest rate, plus three percent (3%) per annum.

     F.   REMEDIES.

          1.   Immediately upon the occurrence of any Event of Default by GPI
pursuant to Article III.E.1. or E.2. (if the Event of Default is under Article
III.E.2. and it involves a Supply Interruption (defined below), such Event of
Default must involve a willful act or failure to act by GPI to be covered by
this Article III.F.1.; and Events of Default by GPI under Article III.E.2.
that involve a Supply Interruption but no willful act or failure to act by GPI
are subject to the provisions of Article III.H. below), then RPR shall have
the option, in its sole discretion, exercisable by written notice to GPI, to
(a) treat such event as one giving rise to the remedies set forth in Article
III.H.7. hereof or (b) terminate this Agreement and pursue any and all
remedies available to RPR including, without limitation, the right to seek to
recover from Guilford any and all damages and losses of any nature whatsoever
(including, without limitation, consequential damages, lost profits and direct
damages).

          2.   Immediately upon the occurrence of any Event of Default by RPR
pursuant to Article III.E.1. or E.2., Guilford shall have the right to
terminate this Agreement by delivering written notice thereof to RPR.  If
Guilford so terminates this Agreement, then Guilford shall also have the right
to pursue any and all remedies available to Guilford at law or in equity
including, without limitation, the right to seek to recover from RPR any and
all damages and losses of any nature whatsoever (including, without
limitation, consequential damages, lost profits, and direct damages).  

          3.   The parties expressly acknowledge that the remedy provisions
contained in this Section are reasonable, considering the intended nature and
scope of this Agreement, and considering the investments and undertakings
required on the part of the parties in connection herewith.  

          4.   Upon termination of this Agreement by Guilford, RPR shall have
one hundred eighty (180) days in which to sell out its stock of any Product it
possesses or has committed to purchase under this Agreement (it being
understood that RPR's payment obligations under this Agreement shall continue
to apply to any such sales).  

          5.   If either party terminates this Agreement in accordance with
the terms herein, the terminating party shall owe no penalty or indemnity to
the terminated party on account of such termination.  















                                    - 20 -

<PAGE>   21
     G.   FORCE MAJEURE.

          The obligations of GPI and RPR hereunder shall be subject to any
delays or non-performance caused by:  acts of God, earthquakes, fires, floods,
explosion, sabotage, riot, accidents; regulatory, governmental, or military
action or inaction; strikes, lockouts or labor trouble; perils of the sea; or
failure or delay in performance by third parties, including suppliers and
service providers; or any other cause beyond the reasonable control of either
party ("Force Majeure Event").  The party which is not performing its
obligations under this Agreement as a result of any such event of Force
Majeure shall use commercially reasonable efforts to resume compliance with
this Agreement as soon as possible.  

     H.   INTERRUPTIONS IN SUPPLY.

          1.   As used in this Article III.H., the term "Supply Interruption
Trigger Event" shall mean any of the following events:

               (a)  any Force Majeure Event (as defined above) which results
in an interruption in supply of Product to RPR or in GPI being unable to
fulfill its obligation to supply Product to RPR in accordance with the
provisions of Article II of this Agreement (a "Supply Interruption"); 

               (b)  any event or circumstance which (i) is not a Force Majeure
Event, (ii) is not caused by and does not result from a willful act or failure
to act by GPI or a Bankruptcy Event involving GPI, and (iii) results in a
Supply Interruption; or

               (c)  GPI receives written notice from RPR of a breach by GPI of
GPI's obligation to supply Product to RPR in accordance with the provisions of
Article II of this Agreement, provided that such breach is not caused by and
does not result from a willful act or failure to act by GPI or a Bankruptcy
Event involving GPI (a "Non-Willful Supply Breach").

          2.   GPI shall, within 60 days after the occurrence of any Supply
Interruption Trigger Event, (a) in good faith prepare a plan (the "Proposed
Recovery Plan") detailing the steps to be taken and implemented by GPI in
order to eliminate the Supply Interruption or cure the Non-Willful Supply
Breach as soon as possible, and (b) submit the Proposed Recovery Plan to the
Governance Committee (as defined in the Marketing Rights Agreement).  The
Proposed Recovery Plan (a) may identify those portions of the Proposed
Recovery Plan which constitute "Critical Milestones" (material stages in the
plan, the failure to meet would render the Proposed Recovery Plan
unattainable) to be met by GPI, and the time period required to complete such
Critical Milestones, and (b) will identify the time period required to
complete the Proposed Recovery Plan.

          3.   If GPI fails to submit a Proposed Recovery Plan to the
Governance Committee within 60 days after the occurrence of any Supply
Interruption Trigger Event, RPR shall be entitled to immediately exercise its
rights and remedies under Article III.H.7. below.

          4.   The Governance Committee shall (a) promptly meet to review the
Proposed Recovery Plan and (b) as soon as possible, and in any event within
thirty (30) days after the date that GPI submits the Proposed Recovery Plan to
the Governance Committee, develop and approve a final plan (the "Recovery
Plan") detailing the steps to be taken and implemented in order to eliminate
the Supply Interruption or to cure the Non-Willful Supply Breach as soon as
possible, including (i) Critical Milestones, if any, in such Recovery Plan and
the respective dates by which such Critical Milestones are 

















                                    - 21 -

<PAGE>   22
required to be completed, and (ii) the date by which the Recovery Plan must be
completed.  The Governance Committee shall promptly deliver copies of the
Recovery Plan to each of GPI and RPR.  If the Governance Committee is unable
to approve a Recovery Plan within such 30-day period, the matter shall be
submitted to arbitration in accordance with the procedures set forth in
Article III.H.10. of this Agreement. 

          5.   If the Recovery Plan calls for GPI to perform the Recovery
Plan, GPI shall use commercially reasonable efforts to implement, perform and
complete the Recovery Plan in accordance with its terms.  Upon the occurrence
of any of the following acts, events or occurrences, RPR shall be entitled to
immediately exercise its rights and remedies under Article III.H.7. below:

               (a)  if GPI abandons its performance of the Recovery Plan;

               (b)  if GPI fails for any reason whatsoever to complete any of
the Critical Milestones set forth in the Recovery Plan by the required
completion date for such Critical Milestone, as set forth in the Recovery
Plan; or

               (c)  if GPI fails for any reason whatsoever to complete the
Recovery Plan by the required completion date, as set forth in the Recovery
Plan.

          6.   If the Recovery Plan calls for RPR to perform the Recovery
Plan, RPR shall be entitled to immediately exercise its rights and remedies
under Article III.H.7. below.

          7.   Immediately upon the occurrence of any of the acts, events or
occurrences specified in Article III.H.3., 5. or 6. above or the occurrence of
any Event of Default by or involving GPI of the type described in Article
III.F.1., RPR shall have the right and option, upon written notice to GPI (a
"RPR Manufacturing Notice") to either manufacture itself the Product or to
have a third party so manufacture the Product.  In addition, upon the
occurrence of (a) the failure of GPI specified in Article III.H.3., (b) an
abandonment by GPI specified in Article III.H.5.a., or (c) any failure by GPI
specified in Article III.H.5.b. or c. that is caused by a willful act or
failure to act by GPI, or (d) any Event of Default by or involving GPI of the
type described in Article III.F.1., RPR shall have the right to terminate this
Agreement, exercisable by including notice of termination in the RPR
Manufacturing Notice (if RPR exercises such right of termination, RPR's rights
under this Article III.H.7. to manufacture the Product or have the Product
manufactured for RPR will be coterminous with the Marketing Rights Agreement). 
Upon delivery of the RPR Manufacturing Notice, (a) RPR shall be entitled to
manufacture the Product itself and shall have a royalty-free, non-exclusive
license in, to and under the Patents and Guilford's Know-How to make, have
made and use the Product throughout the Territory for use in the Field during
the term of the Marketing Rights Agreement, as well as all rights to use and
cross-reference GPI's Regulatory Filings in connection with RPR's exercise of
such license rights, and (b) GPI shall deliver to RPR, within five 














                                    - 22 -

<PAGE>   23
business days after GPI's receipt of the RPR Manufacturing Notice, a true and
complete copy of the current Process Descriptions for the Product and all the
Regulatory Filings made by GPI relating to the Product, which may be used by
RPR solely in connection with the exercise of such license rights.  GPI shall
provide such assistance and other information as shall be necessary in order
for RPR to manufacture itself or have someone else manufacture the Product. 
In the event that RPR uses a third party manufacturer for the Product pursuant
to this clause, RPR shall require such third party to be bound by the same
confidentiality provisions as are contained in this Agreement.  Nothing in
this Article III.H.7. (including any termination of this Agreement by RPR as
provided above) shall be deemed to relieve RPR of its obligation to pay Net
Sales Fees and Research and Development Fees under the Marketing Rights
Agreement.

          8.   In the event that manufacture of the Product is undertaken by
or on behalf of RPR as a result of RPR exercising its rights thereto under
Article III.H.7., and RPR did not terminate this Agreement pursuant to its
right under Article III.H.7., then upon the elimination of the Supply
Interruption or Non-Willful Supply Breach, GPI shall have the right to resume
supply of the Product under this Agreement; provided, however, that resumption
of such supply shall be subject to any agreement or other arrangement RPR
shall have entered into in order to obtain supply of such Product (it being
understood that RPR will use commercially reasonable efforts to negotiate, to
the extent possible, such agreement or arrangement to enable GPI to resume
supply when it is able and shall not voluntarily renew or extent any such
arrangement); and provided further, however, that GPI shall be obligated to
reimburse RPR for those costs it incurred in order to obtain supply of such
Product (either directly incurred or those paid to a third party).

          9.   Notwithstanding the foregoing or any other provision of this
Agreement to the contrary, if for any reason whatsoever any Supply
Interruption or Non-Willful Supply Breach is not eliminated or cured on or
before the first anniversary of the corresponding Supply Interruption Trigger
Event, RPR shall have the right to terminate this Agreement, exercisable by
delivering written notice thereto to GPI, provided that any such termination
is contemporaneous with termination of the Marketing Rights Agreement.

          10.  Notwithstanding anything contained in this Agreement or the
Marketing Rights Agreement to the contrary, if any dispute arises between the
parties relating to or arising out of this Article III.H., such dispute shall
be submitted to J.A.M.S./Endispute for final binding arbitration pursuant to
J.A.M.S./Endispute's Arbitration Rules for Expedited Arbitration then in
effect.  Such arbitration shall be conducted by a single arbitrator in
Wilmington, Delaware.  The parties agree that, if available from
J.A.M.S./Endispute, they will request the services of a retired judge (from an
appellate level state or federal court if possible, even if it may be
necessary to import such a judge from another jurisdiction) acceptable to the
parties hereto to serve as the arbitrator, applying the applicable law, and
that they will require such arbitrator to furnish a written decision in
reasonable detail setting forth the bases in fact and law for the 














                                    - 23 -

<PAGE>   24
arbitrator's decision.  Arbitration may be commenced at any time by any party
hereto giving written notice to each other party to a dispute that such
dispute has been referred to arbitration under this Article III.H.10.  In any
such proceeding, the arbitrator shall have the right to consider, as an
appropriate remedy for RPR, the remedies set forth in Article III.H.7. above.
The parties agree that the decision of the arbitrator shall be final and
binding on the parties.

     I.   CERTAIN COVENANTS OF GPI.

          During the term of this Agreement, GPI and its Affiliates shall:

          i.   Refer to RPR all customers' inquiries and correspondence which
it receives relating to the sale of the Product in the Territory, as well as
all customer complaints, adverse reaction information or notifications,
correspondence, etc., with respect to the use of the Product;

          ii.  Use commercially reasonable efforts to maintain at all times
manufacturing capacity and capabilities which shall allow it to satisfy the
provision of this Agreement and timely supply the Product to RPR as
contemplated under this Agreement;

          iii. Adhere in all material respects to all laws, rules and
regulations applicable to the manufacture, storage, packaging and sale to RPR
of the Product under this Agreement including, without limitation, all FDA
Standards and all applicable portions of the NDA for the Product;

          iv.  Refer promptly to RPR any leads concerning prospective
customers in the Territory which come to the attention of GPI during the term
of this Agreement; and

          v.   Procure and maintain in full force and effect during the term
of this Agreement valid and collectible insurance policies in connection with
GPI's activities as contemplated hereby which policies shall provide for the
type of insurance and amount of coverage as may be approved by the Governance
Committee from time to time and, upon RPR's request, provide to RPR a
certificate of coverage or other written evidence reasonably satisfactory to
RPR of such insurance coverage.

     J.   CERTAIN COVENANTS OF RPR.  

          During the term of this Agreement, RPR and its Affiliates shall 
inform GPI of all material written adverse reaction information or
notifications, with respect to the use of the Product, as well as written
customer complaints or correspondence regarding the manufacture of the Product.


















                                    - 24 -

<PAGE>   25
     K.   COVENANTS OF EACH PARTY.

          Each party will consult, cooperate and collaborate with the other in
making any changes in the manufacturing process that would affect potency,
purity or quality of the Product.  


                                  ARTICLE IV

IV.  CONDITIONS

     A.   CONDITIONS TO EFFECTIVENESS.  The effectiveness of this Agreement
and the rights and obligations of RPR and GPI under this Agreement are subject
to the execution and delivery of the Marketing Rights Agreement, the Stock
Purchase Agreement and the Loan Agreement by RPR and GPI simultaneously with
the execution and delivery of this Agreement by RPR and GPI.


                                   ARTICLE V

V.   MISCELLANEOUS

     A.   INDEPENDENT CONTRACTOR.  In making and performing this Agreement,
the parties are acting and shall act as independent contractors.  Nothing in
this Agreement shall be deemed to create an agency, joint venture or
partnership relationship between the parties hereto.  Neither party shall have
the authority to obligate the other party in any respect, and neither party
shall hold itself out as having any such authority.  All personnel of GPI
shall be solely employees of GPI and shall not represent themselves as
employees of RPR.  All personnel of RPR shall be solely employees of RPR and
shall not represent themselves as employees of GPI.

     B.   ASSIGNMENT.  Neither GPI nor RPR may assign or otherwise transfer
any of its rights or obligations hereunder without the prior written consent
of the other party.  

     C.   BINDING EFFECT; BENEFITS.  This Agreement shall inure to the benefit
of and be binding upon the parties hereto and their respective permitted
successors and assigns.  Nothing contained herein shall give to any other
Person any benefit or any legal or equitable right, remedy or claim.

     D.   AMENDMENTS.  This Agreement may only be modified, amended or
supplemented by an instrument in writing executed by GPI and RPR.

     E.   WAIVERS.  No term or provision hereof will be considered waived by
either party, and no breach excused by either party, unless such waiver or
consent is in writing signed on behalf of the party against whom the waiver is
asserted.  No consent by either party to, or waiver of, a breach by either
party, whether express or implied, will constitute a consent to, waiver of, or
excuse of any other, different, or subsequent breach by either party.

















                                    - 25 -

<PAGE>   26

     F.   NOTICES.  All notices, claims, certificates, requests, demands and
other communications hereunder shall be in writing and shall be delivered
personally or sent by facsimile transmission, air courier, or registered or
certified mail, return receipt requested, addressed as follows:

          if to GPI to:

               Guilford Pharmaceuticals Inc.
               6611 Tributary Street
               Baltimore, Maryland  21224
               Attention:  President and Chief Executive Officer
               Fax:  (410) 631-6338

          if to RPR to:

               Rhone-Poulenc Rorer Pharmaceuticals Inc.
               500 Arcola Road
               P.O. Box 1200
               Collegeville, Pennsylvania  19428-0107
               Attention:  General Counsel
               Fax:  (610) 454-3807

or to such other address as the party to whom notice is to be given may have
furnished to the other parties in writing in accordance herewith.  Any such
communication shall be deemed to have been delivered (i) when delivered, if
delivered personally, (ii) when sent (with confirmation received), if sent by
facsimile transmission on a business day, (iii) on the first business day
after dispatch (with confirmation received), if sent by facsimile transmission
on a day other than a business day, (iv) on the second business day after
dispatch, if sent by air courier, and (v) on the fifth business day after
mailing, if sent by mail.

     G.   COUNTERPARTS.  This Agreement shall become binding when any one or
more counterparts hereof, individually or taken together, shall bear the
signatures each of the parties hereto.  This Agreement may be executed in any
number of counterparts, each of which shall be deemed an original as against
the party whose signature appears thereon, but all of which taken together
shall constitute but one and the same instrument.

     H.   HEADINGS.  The article and section headings contained in this
Agreement are for reference purposes only and shall not affect in any way the
meaning or interpretation of this Agreement.

     I.   GOVERNING LAW.  This Agreement and any claims, disputes or causes of
action relating to or arising out of this Agreement, shall be construed in 
accordance with and governed by the laws of the State of Delaware, without 
giving effect to the conflict of laws principles thereof.
















                                    - 26 -

<PAGE>   27

     J.   SEVERABILITY.  Any of the provisions of this Agreement which are
determined to be invalid or unenforceable in any jurisdiction shall be
ineffective to the extent of such invalidity or unenforceability in such
jurisdiction, without rendering invalid or unenforceable the remaining
provisions hereof or affecting the validity or enforceability of any of the
provisions of this Agreement in any other jurisdiction.

     K.   ENTIRE AGREEMENT.  This Agreement, including all Exhibits hereto,
the Marketing Rights Agreement, Stock Purchase Agreement and the Loan
Agreement, constitute the entire agreement between the parties relating to
subject matter of this Agreement and supersede all prior or simultaneous
representations, discussions, negotiations, and agreements relating to such
subject matter, whether written or oral, including without limitation, the
Confidentiality Agreement dated as of February 29, 1996 between GPI and RPR.

     L.   DISPUTES.  

          1.   Notwithstanding anything contained in this Agreement or the
Marketing Rights Agreement to the contrary, if any dispute arises between the
parties relating to or arising out of this Agreement (except pursuant to
Article III.H. hereof, which shall be governed by the provisions stated in
Article III.H.10.), appropriate representatives of the parties shall first use
commercially reasonable efforts to negotiate in good faith a resolution of the
dispute as expeditiously as is reasonably practicable.

          2.   If such representatives of the parties are unable to resolve
the dispute within 15 business days after each party has been apprised of the 
dispute, either party shall have the right, exercisable by delivering written 
notice thereof to the other party, to refer the dispute to the Chief Executive
Officer of GPI and the President of Pharmaceutical Operations of RPR.  If
either party exercises such right, such officers shall use commercially
reasonable efforts to negotiate in good faith a resolution of the dispute as
expeditiously as is reasonably practicable.

          3.   If the dispute is not resolved within 20 business days after
the date that a party referred that matter to the Chief Executive Officer of
GPI and the President of the Pharmaceutical Operations of RPR (or such other
period of time as the parties may mutually agree), each party shall have the
right to initiate and pursue any remedy available to it at law or in equity
provided, however, that all claims, disputes or causes of action relating to
or arising out of this Agreement shall be brought, heard and resolved solely
and exclusively by and in a federal or state court situated in Wilmington, New
Castle County, Delaware.  Each of the parties hereto agrees to submit to the
jurisdiction of such courts and that such courts are a proper venue for
resolving all claims, disputes or causes of action relating to or arising out
of this Agreement.
















                                    - 27 -

<PAGE>   28
     IN WITNESS WHEREOF, duly authorized representatives of the parties hereto
have duly executed this Agreement as of the Effective Date.



                         RHONE-POULENC RORER
                           PHARMACEUTICALS INC.



                         By: /c/ Timothy G. Rothwell
                             -------------------------------
                         Name: Timothy G. Rothwell
                               -----------------------------
                         Title: President
                               -----------------------------

                         GUILFORD PHARMACEUTICALS INC.



                         By: /c/ Craig R. Smith, M.D.
                            --------------------------------
                         Name:  Craig R. Smith, M.D.
                         Title:  President and Chief Executive Officer


                         For purposes of consenting to and agreeing to be
                         bound by the provisions of Article II and Article
                         III.C. and H. only:

                         GPI Holdings Inc.


                         By:   /c/ Daniel P. McCollom
                              ------------------------------
                         Name:  Daniel P. McCollom
                         Title:  Vice President and Secretary

























































                                    - 28 -


<PAGE>   1
                                                               EXHIBIT 10.42







                           STOCK PURCHASE AGREEMENT



                                    BETWEEN



                         GUILFORD PHARMACEUTICALS INC.



                                      AND



                           RHONE-POULENC RORER INC.



                           DATED AS OF JUNE 13, 1996
<PAGE>   2
          THIS STOCK PURCHASE AGREEMENT is entered into as of June 13, 1996
between Guilford Pharmaceuticals Inc., a Delaware corporation (the "Company")
and Rhone-Poulenc Rorer Inc., a Pennsylvania corporation (the "Purchaser").

          WHEREAS, in connection with that certain Marketing, Sales and
Distribution Agreement dated the date hereof (the "Master Agreement") and
certain related agreements contemplated therein, including without limitation,
the Manufacturers and Supply Agreement and the Loan Agreement, as defined in
the Master Agreement and this Agreement (collectively the "Transaction
Documents"), between the Company and the Purchaser, the Company desires to
issue and sell to the Purchaser shares of the Company's common stock, $0.01
par value; and

          WHEREAS, the Purchaser wishes to acquire shares of the Company's
common stock, $0.01 par value, on the terms and subject to the conditions set
forth in this Agreement;

          NOW, THEREFORE, in consideration of the premises and the mutual
covenants contained in this Agreement, the parties agree as follows:

                                   ARTICLE I

     SECTION 1.01   AUTHORIZATION.

          The Company has authorized the issuance and sale pursuant hereto of
up to 455,000 shares of common stock, par value $0.01 per share ("Authorized
Shares"), having the rights, restrictions and privileges set forth in the
Amended and Restated Certificate of Incorporation of the Company.

     SECTION 1.02   ISSUANCE AND SALE OF THE SHARES.

          Subject to the terms and conditions of this Agreement, the Company
hereby agrees to issue and sell to the Purchaser, and the Purchaser hereby
agrees to acquire from the Company, (i) on the First Closing Date, as defined
below, the number of shares of the Company's common stock, $0.01 par value,
rounded to the nearest whole share (the "Initial Shares") equal to $7,500,000
divided by the lesser of (a) 120% of the Market Price (as defined below) or
(b) 115% of the last reported sale price of a share of the common stock on the
NASDAQ Stock Market on the last trading day immediately preceding the First
Closing Date; and (ii) on the Second Closing Date, as defined below, the
number of shares of the Company's Common Stock, par value $.01 per share,
rounded to the nearest whole share (the "Additional Shares") equal to
$7,500,000 divided by the lesser of (x) 120% of the Market Price (as defined
below) or (y) 115% of the last reported sale price of a share of the common
stock on the NASDAQ Stock Market or any principal national securities exchange
on which the common stock is then quoted (or, if not then quoted on the NASDAQ
Stock Market or any such exchange, the fair market value thereof as determined
in good faith by the Board of Directors of the Company) on the last trading or
business day, as the case may be, immediately preceding the Second Closing
Date (the "Last Sale Price"); provided, however, that if the total number of
Additional Shares so determined would exceed a number that, together with the
Initial Shares,
<PAGE>   3
would cause the Purchaser to own in excess of the Authorized Shares
(approximately adjusted for any stock splits, stock dividends,
recapitalizations and the like), after giving effect to such issuance, then
the total number of Additional Shares shall equal that lesser number that,
together with the Initial Shares, would equal the number of Authorized Shares
(approximately adjusted for any stock splits, stock dividends,
recapitalizations and the like), and the purchase price to be paid therefor
per share shall equal the lesser of (aa) 120% of the Market Price or (bb) 115%
of the Last Sale Price.  The total purchase price for the Initial Shares shall
be $7,500,000, and the total purchase price for the Additional Shares shall be
the lesser of $7,500,000 or the aggregate purchase price determined pursuant
to the last clause of the preceding sentence.  As used herein "Market Price"
means the average of the last sale prices of a share of the common stock for
each of the last 10 trading days preceding the date of issuance of the Initial
Shares or Additional Shares, as the case may be, on the NASDAQ Stock Market
(or any principal national securities exchange or which the common stock is
then quoted or, if not then quoted on any exchange or listed on the NASDAQ
Stock Market, the fair market value thereof as determined in good faith by the
Board of Directors of the Company as reflecting the market value of a share of
common stock over the 10 business days immediately preceding the date of
determination).

     SECTION 1.03   CLOSING.

          (a)   The date of purchase of the Initial Shares (the "First
Closing Date") shall occur on the later of the date of the execution and
delivery of this Agreement by both parties hereto or the first business day
following the date on which all required waiting periods under the federal
Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended (the "HSR
Act") shall have expired or early termination thereof been granted, if a
filing thereunder is required to be made, (such date of expiration or
termination, the "HSR Date") or at any other time, following the HSR Date, as
may be agreed upon between the Purchaser and the Company.  The purchase and
sale of the Initial Shares to occur on the First Closing Date shall commence
at 10:00 a.m. Baltimore time at the offices of Hogan & Hartson L.L.P., 111
South Calvert Street, Baltimore, Maryland 21202 or such other location as the
Purchaser and the Company may agree, and at such closing the Company will
deliver the Initial Shares to Purchaser in the form of a single certificate
issued in the name of Purchaser against payment of the purchase price therefor
by federal wire transfer of immediately available funds to an account of the
Company designated in writing to Purchaser at least two business days prior to
the First Closing Date.

          (b)   The date of purchase of the Additional Shares (the "Second 
Closing Date") shall be fifteen business days following the date on
which the United States Food and Drug Administration ("FDA") approves
commercial sale of the Company's GLIADEL wafer for the treatment of primary
form(s) of malignant glioma, including glioblastoma multiforme.  The purchase
and sale of the Additional Shares to occur on the Second Closing Date shall
commence at 10:00 a.m. Baltimore time at the offices of Hogan & Hartson L.L.P.,
111 South Calvert Street, Baltimore, Maryland 21202, or such other location as
the Purchaser and the Company may agree,












                                     - 2 -
<PAGE>   4
and at such closing, the Company will deliver the Additional Shares to the
Purchaser in the form of a single certificate issued in the name of the
Purchaser against payment of the purchase price therefor by federal wire
transfer of immediately available funds to an account of the Company
designated in writing to the Purchaser at least two business days prior to the
Second Closing Date.

                                  ARTICLE II
                 REPRESENTATIONS AND WARRANTIES OF THE COMPANY

          The Company represents and warrants to the Purchaser as follows:

     SECTION 2.01.  ORGANIZATION, QUALIFICATION, AND STANDING.

          The Company is a corporation duly organized, validly existing and in
good standing under the laws of the State of Delaware.  The Company is duly
authorized to conduct business and is in good standing under the laws of each
jurisdiction in which the conduct of its business requires such qualification,
except where the failure to qualify to do business would not have a material
adverse effect upon the Company and its subsidiaries, taken as a whole (a
"Material Adverse Effect").  The Company is not in default under or in
violation of any provision of its Certificate of Incorporation or bylaws
except for defaults which, individually or in the aggregate, would not have a
Material Adverse Effect.

     SECTION 2.02   CORPORATE POWER.

          The Company has the corporate power and authority to execute,
deliver and perform this Agreement and to issue, sell and deliver the Initial
Shares and the Additional Shares (collectively, the "Shares").  The issuance
and delivery of the Shares and the execution, delivery and performance of this
Agreement by the Company have been duly authorized by all necessary corporate
action of the Company.

     SECTION 2.03   CAPITALIZATION.

          The authorized capital stock of the Company consists of
(i) 4,700,000 shares of Preferred Stock, of which no shares are issued or
outstanding, (ii) 300,000 shares of Series A Junior Participating Preferred
Stock, of which no shares are issued or outstanding and (iii) 20,000,000
shares of common stock (the "Common Stock") of which 9,108,934 shares were
issued and outstanding as of April 26, 1996.  The Shares have been duly
authorized and, when issued in accordance with this Agreement, will be validly
issued, fully paid and nonassessable and will be free and clear of all liens,
charges, restrictions, claims and encumbrances imposed by or through the
Company.  In addition, a total of 1,678,769 shares of Common Stock were
reserved for issuance as of May 31, 1996 under outstanding options, warrants
and exchange rights.
















                                     - 3 -
<PAGE>   5
          The designations, powers, preferences, rights, qualifications,
limitations and restrictions in respect of each class and series of authorized
capital stock of the Company are as set forth in the Certificate of
Incorporation and all the designations, powers, preferences, rights,
qualifications, limitations and restrictions are valid, binding and
enforceable and in accordance with all applicable laws.

     SECTION 2.04   NONCONTRAVENTION.

          The execution, delivery and performance of this Agreement by the
Company will not (i) violate any statute, regulation, rule, judgment, order,
decree, stipulation or injunction of any government, governmental agency or
court to which the Company is subject or any provision of the Certificate of
Incorporation or bylaws of the Company, or (ii) conflict with, result in a
breach of, constitute a default under, result in the acceleration of, create
in any party the right to accelerate, terminate, modify, or cancel, or require
any notice under, any contract or other arrangement to which Company is a
party or by which it is bound or to which any of its assets is subject.
Subject to the accuracy of the representations and warranties of the Purchaser
set forth in Article III, no registration or filing with, or consent or
approval of or other action by, any Federal, state or other governmental
agency or instrumentality is or will be necessary for the valid execution,
delivery and performance by the Company of this Agreement, except for filings
which may be required under the HSR Act and the approval required by the FDA
as a condition to the issuance of the Additional Shares and certain other
matters as provided herein.

     SECTION. 2.05  VALIDITY.

          This Agreement has been duly executed and delivered by the Company
and constitutes the legal, valid and binding obligation of the Company,
enforceable in accordance with its terms, except as the same may be limited by
bankruptcy, insolvency, moratorium and other laws of general application
affecting the enforcement of creditors' rights and by the exercise of judicial
discretion and the application of principles of equity.


     SECTION. 2.06  DISCLOSURE.

          The Company has filed with the Securities and Exchange Commission
(the "SEC"), and has heretofore made available to Purchaser true and complete
copies of, all forms, reports, schedules, statements and other documents
required to be filed by it since January 1, 1995 under the Securities Exchange
Act of 1934 (the "Exchange Act") or the Securities Act of 1933 (the
"Securities Act") (as such documents have been amended since the time of their
filing, collectively, the "Company SEC Documents").  The Company SEC
Documents, including without limitation any financial statements or schedules
included therein, at the time filed, (a) did not contain any untrue statement
of a material fact or omit to state a material fact required to be stated
therein or necessary in order to make the statements therein, in light of the
circumstances under which they were made, not misleading and (b) complied in
all material respects with the












                                     - 4 -
<PAGE>   6
applicable requirements of the Exchange Act and the Securities Act, as the
case may be, and the applicable rules and regulations of the SEC thereunder.
The financial statements of the Company included in the Company SEC Documents
complied, at the date of filing, as to form in all material respects with
applicable accounting requirements and with the published rules and
regulations of the SEC with respect thereto, have been prepared in accordance
with generally accepted accounting principles applied on a consistent basis
during the periods involved (except as may be indicated in the notes thereto
or, in the case of the unaudited statements, as permitted by Form 10-Q of the
SEC) and fairly present (subject, in the case of the unaudited statements, to
normal, recurring audit adjustments) the financial position of the Company as
at the dates thereof and the results of its operations and cash flows for the
periods then ended.

          Except as disclosed in the Company SEC Documents, since December 31,
1995, there have been no events, changes or effects having, individually or in
the aggregate, a material adverse effect on the Company.

          Except as and to the extent set forth in the Company's Annual Report
on Form 10-K for the year ended December 31, 1995, as of December 31, 1995,
the Company did not have any liability or obligations of any nature, whether
or not accrued, contingent or otherwise, that would be required by generally
accepted accounting principles to be reflected on a balance sheet of the
Company (including the notes thereto).  Since December 31, 1995, and except as
set forth in the Company SEC Documents, the Company has not incurred any
liabilities of any nature, whether or not accrued, contingent or otherwise,
which could reasonably be expected to have, individually or in the aggregate,
a material adverse effect on the Company.

                                  ARTICLE III
                        REPRESENTATIONS AND WARRANTIES
                               OF THE PURCHASER

          The Purchaser represents and warrants to the Company as follows:

     SECTION 3.01   INVESTMENT REPRESENTATIONS.

          (a)  The Purchaser is an "accredited investor" within the meaning of
Rule 501 under the Securities Act of 1933, as amended (the "Securities Act");

          (b)  the Shares being purchased by it are being acquired for its own
account for the purpose of investment and not with a view to or for sale in
connection with any distribution thereof;

          (c)  the Purchaser understands that (i) the Shares have not been and
will not be registered under the Securities Act by reason of their issuance in
transactions exempt from the registration requirements of the Securities Act
pursuant to Section 4(2) thereof or Rules 505 or
















                                     - 5 -
<PAGE>   7
506 promulgated under the Securities Act, and that the holders of the Shares
do not have any rights to cause such Shares to be registered under the
Securities Act, (ii) the Shares must be held indefinitely unless a subsequent
disposition thereof is registered under the Securities Act or is otherwise
exempt from registration, (iii) the Shares will bear a legend to that effect
and (iv) the Company will make a notation on its transfer books to that
effect;

          (d)  in no event will the Purchaser dispose of any of the Shares
(other than pursuant to Rule 144(k) promulgated by the Securities and Exchange
Commission) unless and until (i) the Purchaser shall have notified the Company
of the proposed disposition and shall have furnished the Company with a
statement of the circumstances surrounding the proposed disposition, and
(ii) if requested by the Company, the Purchaser shall have furnished the
Company with an opinion of counsel reasonably satisfactory in form and
substance to the Company to the effect that (x) the disposition will not
require registration under the Securities Act and (y) appropriate action
necessary for compliance with the Securities Act and any applicable state,
local or foreign law has been taken;

          (e)  the Purchaser understands that each certificate evidencing the
Shares shall initially bear the appropriate restrictive legend set forth in
Article IV below;

          (f)  the Purchaser has not been offered the Shares by any form of
general solicitation or general advertising;

          (g)  (i) the Purchaser has the knowledge and experience in financial
and business matters as to be capable of evaluating the merits and risks of
the investment in the Shares; (ii) it has received all the information it has
requested from the Company and considers necessary or appropriate to make a
determination as to whether to purchase the Shares; (iii) it has the ability
to bear the economic risks of the investment; (iv) it is able, without
materially impairing its financial condition, to hold the Shares for an
indefinite period of time and to suffer complete loss on its investment; and
(v) it understands and has fully considered for purposes of this investment
the risks of this investment and understands that (1) the investment is
suitable only for an investor who is able to bear the economic consequences of
losing its entire investment, (2) the Company has limited financial and
operating history, has not had any net income and has yet to generate any
product revenue, (3) the Shares represent an extremely speculative investment
involving a high risk of loss, (4) there are substantial restrictions on the
transferability of the Shares and, accordingly, it may not be possible for the
Purchaser to liquidate its investment in the Shares; and (5) it is not relying
on any representations of the Company or its officers, directors, employees or
representatives as to the possible future value, if any, of the Shares.

     SECTION 3.02   CORPORATE POWER, ORGANIZATION AND AUTHORIZATION.

          The Purchaser has the corporate power and authority to execute,
deliver and













                                     - 6 -
<PAGE>   8
perform this Agreement, and the Purchaser is duly organized, validly existing
and in good standing under the laws of the jurisdiction of its formation.  The
execution, delivery and performance of this Agreement by the Purchaser have
been duly authorized by all necessary corporate action of the Purchaser.

     SECTION 3.03   NONCONTRAVENTION.

          The execution, delivery and performance of this Agreement by the
Purchaser will not (i) violate any statute, regulation, rule, judgment, order,
decree, stipulation or injunction of any government, governmental agency or
court to which the Purchaser is subject or any provision of the Certificate of
Incorporation or bylaws of Purchaser, or (ii) conflict with, result in a
breach of, constitute a default under, result in the acceleration of, create
in any party the right to accelerate, terminate, modify, or cancel, or require
any notice under, any contract or other arrangement to which the Purchaser is
a party or by which it is bound or to which any of its assets is subject.

     SECTION 3.04.  VALIDITY.

          This Agreement has been duly executed and delivered by the Purchaser
and constitutes the legal, valid and binding obligation of the Purchaser,
enforceable in accordance with its terms, except as the same may be limited by
bankruptcy, insolvency, moratorium and other laws of general application
affecting the enforcement of creditors' rights and by the exercise of judicial
discretion and the application of principles of equity.

                                  ARTICLE IV
                          RESTRICTED TRANSFER LEGENDS

     SECTION 4.01   LEGENDS.

          Each certificate representing the Shares shall be endorsed with the
following legend (in addition to any legend required by applicable state
securities laws):

          THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN
          REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE
          "ACT"), AND MAY NOT BE SOLD, TRANSFERRED, ASSIGNED OR
          HYPOTHECATED UNLESS THERE IS AN EFFECTIVE REGISTRATION
          STATEMENT UNDER THE ACT COVERING THE SALE OF THE SECURITIES,
          THE SALE IS MADE IN ACCORDANCE WITH RULE 144(k) OR ITS























                                     - 7 -
<PAGE>   9
          SUCCESSOR RULE UNDER THE ACT, OR THE COMPANY RECEIVES AN OPINION OF
          COUNSEL SATISFACTORY TO THE COMPANY THAT AN EXEMPTION FROM
          REGISTRATION IS AVAILABLE.

          The Company need not register a transfer of Shares on its books,
unless the conditions specified in the foregoing legend are satisfied, and the
Company may instruct its transfer agent not to register the transfer of any of
the  Shares unless the conditions specified in the foregoing legend are
satisfied.

     SECTION 4.02   REMOVAL OF LEGENDS AND TRANSFER RESTRICTIONS.

          The legend endorsed on a stock certificate pursuant to Section 4.01
of this Agreement and the transfer restrictions with respect to the Shares
represented by the certificate shall be removed and the Company shall issue a
certificate without legend if the Shares are transferred in a transaction
pursuant to which the Shares are registered under the Securities Act and a
prospectus meeting the requirements of Section 10 of the Securities Act is
made available to the purchasers of the Shares or if the holder provides to
the Company an opinion of counsel for the holder of the Shares reasonably
satisfactory to the Company to the effect that a public sale, transfer or
assignment of the Shares may be made pursuant to SEC Rule 144(k) or otherwise
without restriction under the Securities Act.

                                   ARTICLE V
                            CONDITIONS TO CLOSINGS

     SECTION 5.01   CONDITIONS TO PURCHASER'S OBLIGATIONS.

          The obligations of the Purchaser to acquire and pay for the Shares
and to carry out the terms of this Agreement are subject to the fulfillment on
or before the First Closing Date or the Second Closing Date, as the case may
be, of each of the following conditions, any of which may be waived by the
Purchaser:

          (a)  REPRESENTATIONS AND WARRANTIES.

               The representations and warranties of the Company contained in
Article II shall be true, complete and correct on and as of the First Closing
Date and the Second Closing Date with the same effect as if made on and as of
such First Closing Date and Second Closing Date.























                                     - 8 -
<PAGE>   10
          (b)  PERFORMANCE.

               The Company shall have performed and complied with all
agreements contained herein required to be performed or complied with by it
prior to or at the respective First Closing Date or Second Closing Date.

          (c)  ALL PROCEEDINGS TO BE SATISFACTORY.

               All corporate and other proceedings to be taken by the Company
in connection with the transactions contemplated hereby and all documents
incident thereto shall be reasonably satisfactory in form and substance to the
Purchaser and its counsel.

          (d)  SUPPORTING DOCUMENTS.

               The Purchaser and its counsel shall have received copies of the
following documents:

               (i)  (A) the Certificate of Incorporation, certified as of a
recent date by the Secretary of State of the State of Delaware (the "Secretary
of State") and (B) a certificate of the Secretary of State dated as of a
recent date as to the due incorporation and good standing of the Company and
listing all documents of the Company on file with the Secretary of State;

               (ii) a certificate of the Secretary or an Assistant Secretary
of the Company dated the Closing Date certifying: (A) that attached thereto is
a true and complete copy of the bylaws of the Company as in effect on the date
of the certification; (B) that attached thereto is a true and complete copy of
all resolutions adopted by the Board of Directors or the stockholders of the
Company authorizing the execution, delivery and performance of this Agreement
and the issuance, sale and delivery of the Shares and that all the resolutions
are in full force and effect and are all the resolutions adopted in connection
with the transactions contemplated by this Agreement; (C) that the Certificate
of Incorporation has not been amended since the date of the last amendment
referred to in the certificate delivered pursuant to clause (i)(B) above; and
(D) to the incumbency and specimen signature of each officer of the Company
executing this Agreement, and any certificate or instrument furnished pursuant
hereto, and a certification by another officer of the Company as to the
incumbency and signature of the officer signing the certificate referred to in
this clause.

          (e)  HSR ACT.

               If a filing under the HSR Act is made, all waiting periods
shall have expired or been terminated under the HSR Act so as to permit the
purchase of the Shares on the respective First Closing Date and the Second
Closing Date.

















                                     - 9 -
<PAGE>   11

          (f)  OPINION OF COUNSEL.

               The Purchaser shall have received from counsel to the Company
favorable legal opinions concerning the incorporation and existence of the
Company, corporate power and corporate authority to enter into the Agreement
and perform the obligations to be performed hereunder on the date of such
opinion, and that the Shares when issued are validly issued, fully paid and
nonassessable under the Delaware General Corporate Law.

          (g)  OTHER AGREEMENTS.

               The Company shall not be in default under any of the other
Transaction Documents.

     SECTION 5.02   CONDITIONS TO COMPANY'S OBLIGATIONS.

          The obligations of the Company to issue and deliver the Shares and
to carry out the terms of this Agreement are subject to the fulfillment at or
before the First Closing Date and the Second Closing Date, as the case may be,
of each of the following conditions, any of which may be waived by the
company:

          (a)  REPRESENTATIONS AND WARRANTIES.

               The representations and warranties of the Purchaser contained
in Article III shall be true, complete and correct on and as of the First
Closing Date and the Second Closing Date with the same effect as if made on
and as of such First Closing Date and Second Closing Date.

          (b)  PERFORMANCE.

               The Purchaser shall have performed and complied with all
agreements contained herein required to be performed or complied by the
Purchaser prior to or at the respective First Closing Date or Second Closing
Date.

          (c)  ALL PROCEEDINGS TO BE SATISFACTORY.

               All corporate and other proceedings to be taken by the
Purchaser in connection with the transactions contemplated hereby and all
documents incident thereto shall be reasonably satisfactory in form and
substance to the Company and its counsel.

          (d)  HSR ACT.

               All waiting periods shall have expired or been terminated under
the HSR Act so as to permit the purchase of the Shares on the respective First
Closing Date and the Second Closing Date.
















                                    - 10 -
<PAGE>   12

          (e)  OTHER AGREEMENTS.

               Purchaser shall not be in default under any of the other
Transaction Documents.

                                  ARTICLE VI
                           COVENANTS OF THE COMPANY

     SECTION 6.01   FINANCIAL STATEMENTS AND OTHER REPORTS.

          So long as the Purchaser holds at least 10,000 Shares (adjusted for
any stock split, stock dividend or other recapitalization event of the
Company), the Company will deliver to the Purchaser copies of all reports
filed by the Company with the Securities and Exchange Commission, including
Forms 10-Q, 8-K and 10-K, within ten days of the date of filing with the
Securities and Exchange Commission and, promptly upon transmission thereof,
copies of all other financial statements, proxy statements, information
statements, notices and reports as the Company shall send to its stockholders
generally.

     SECTION 6.02   CORPORATE EXISTENCE, LICENSES AND PERMITS.

          So long as the Purchaser owns any Shares, the Company will at all
times cause to be done all things necessary to maintain, preserve and renew
its existence as a corporation organized under the laws of a state of the
United States of America and will preserve and keep in force and effect all
licenses and permits deemed by management of the Company to be necessary and
material to the conduct of its businesses, and will remain in compliance with
respect to all applicable material regulatory requirements.

     SECTION 6.03   BOARD NOMINEE.

          On and after the Second Closing Date, and so long as the Purchaser
owns all of the Shares purchased by it hereunder, the Company will nominate
and recommend as a candidate for election to the Board of Directors of the
Company a person (the "Nominee") who is reasonably acceptable to the then
current Board of Directors of the Company and who is designated by the
Purchaser.  At the Company's election, Purchaser shall cause the Nominee to
resign from the Board of Directors of the Company, and the Company will be
under no obligation to nominate and recommend the Nominee, at any time when
(i) the Purchaser owns less than all of the Shares purchased by it hereunder,
(ii) the Master Agreement is terminated, (iii) in the good faith judgment of
the Chairman of the Board of Directors of the Company, Purchaser is in default
under the Transaction Documents, or (iv) at such time as, in the good faith
judgment of the Chairman of the Board of Directors of the Company, a dispute
exists between
















                                    - 11 -
<PAGE>   13
the Company and the Purchaser with respect to any material aspect of any of
the Transaction Documents.  At such time as such of the conditions stated in
the preceding sentence that have led to the resignations of the Nominee or the
suspension of the Company's nomination obligation are cured or are no longer
applicable in the good faith judgment of the Chairman of the Board of
Directors of the Company, the Company will again nominate and recommend as a
candidate for election to the Board of Directors of the Company the Nominee or
another nominee reasonably acceptable to the then current Board of Directors
of the Company designated by the Purchaser.  It is understood by the parties
that if, in the good faith judgment of the Chairman of the Board of Directors
of the Company, matters come before the Board of Directors for consideration
which either (a) could constitute a conflict of interest if considered by the
Nominee in light of the Nominee's obligations to the Company as a director and
to the Purchaser as its representative, or (b) involve confidential
information concerning the Company and its relationships with one or more
third parties the disclosure of which to a representative of the Purchaser
would not be in the best interests of the Company's stockholders generally,
the Board of Directors may require that such information not be disclosed to
the Nominee and that the Nominee be recused from any meeting or other action
of the Board of Directors at which such matters are considered (and the
Purchaser shall cause the Nominee to be so recused).

     SECTION 6.04   OTHER AGREEMENTS

          The Company shall fully perform all agreements between the parties
to be performed by it under each of the Transaction Documents.

                                  ARTICLE VII
                          COVENANTS OF THE PURCHASER

     SECTION 7.01   STANDSTILL AGREEMENT.

          The Purchaser agrees that until the later of June 30, 2006 or five
years after the termination of the Master Agreement, it will not, directly or
indirectly, (unless in any such case specifically invited in writing to do so
by the Board of Directors of the Company) do any of the following:

               (i)  except as acquired pursuant to this Agreement or as a
result of any stock split, stock dividend or similar recapitalization by the
Company, acquire, offer to acquire, or agree to acquire by purchase or
otherwise, individually or by joining a partnership, limited partnership,
syndicate or other "group" (as such term is used in Section 13(d)(3) of the
Securities Exchange Act of 1934, as amended (the "Exchange Act")) (any such
act, to "acquire"), any securities of the Company entitled to vote, or
securities convertible into or exercisable or exchangeable for such securities
(collectively, "Voting Securities") if, after such acquisition, the Purchaser
would beneficially own 5% or more of the total combined voting power of the
Company's Voting Securities then outstanding;
















                                    - 12 -
<PAGE>   14
               (ii) form, join, participate in or encourage the formation of a
partnership, limited partnership, syndicate or other group for the purpose of
acquiring, holding or disposing of Voting Securities;

               (iii) make, or in any way participate in, directly or
indirectly, any "solicitation" of "proxies" (as such terms are defined or used
in Regulation 14A under the Exchange Act) or become a "participant" in any
"election contest" (as such terms are defined or used in Rule 14a-11 under the
Exchange Act) with respect to the Company, or initiate, propose or otherwise
solicit stockholders of the Company for the approval of one or more
stockholder proposals with respect to the Company or induce or attempt to
induce any other person to initiate any stockholder proposal;

               (iv) deposit any Voting Securities into a voting trust or
subject them to any voting agreement or other agreement or arrangement with
respect to the voting of such Voting Securities;

               (v)  otherwise act, directly or indirectly, alone or in concert
with others, to seek to control the management, Board of Directors, policies
or affairs of the Company, or solicit, propose, seek to effect or negotiate
with any other person with respect to any form of business combination
transaction with the Company or any affiliate thereof, or any restructuring,
recapitalization or similar transaction with respect to the Company or any
affiliate thereof, or announce or disclose an intent, purpose, plan or
proposal with respect to the Company or any voting securities inconsistent
with the provisions of this Agreement, including an intent, purpose, plan or
proposal that is conditioned on or would require the Company to waive the
benefit of or amend any provision of this Agreement, or assist, participate
in, facilitate or encourage or solicit any effort or attempt by any person to
do or seek to do any of the foregoing; provided, however, that designation of
an individual as a Nominee pursuant to Section 6.03 hereof shall not
constitute a breach of this clause (v); and

               (vi) encourage or render advice to or make any recommendation
or proposal to any person, or directly or indirectly participate, aid and abet
or otherwise induce any person to engage in any of the actions prohibited by
this Article VII or to engage in any actions inconsistent with such
prohibitions.

     SECTION 7.02   "LOCK-UP" AGREEMENTS.

          If and to the extent requested by the Company and any underwriter of
shares of capital stock of the Company, the Purchaser shall enter into any
lock-up or similar agreements under which it shall agree not to sell or
otherwise transfer or dispose of any of the Shares for a period not to exceed
120 days following the effective date of any registration statement filed by
the Company under the Securities Act, except for transfers or dispositions to
affiliates or donees of the Purchaser who agree to enter into similar lock-up
agreements, provided that similar















                                    - 13 -
<PAGE>   15
agreements are entered into by directors, senior executive officers and major
shareholders as requested by the Company and such underwriter.

     SECTION 7.03   OTHER AGREEMENTS.

          Purchaser shall fully perform all agreements between the parties to
be performed by it under each of the Transaction Documents.

                                 ARTICLE VIII
                                MISCELLANEOUS

     SECTION 8.01   SURVIVAL.

          All covenants, agreements, representations and warranties made
herein shall survive the execution and delivery of this Agreement and the
issuance, sale and delivery of the Shares.

     SECTION 8.02   BINDING EFFECT; ASSIGNMENT.

          All representations, covenants and agreements contained in this
Agreement by or on behalf of any of the parties hereto shall bind and inure to
the benefit of the respective successors and assigns of the parties hereto
whether so expressed or not.  This Agreement may not be assigned by the
Company and may only be assigned by Purchaser to Rhone-Poulenc Rorer
(Holdings) Inc., a Delaware corporation, or any other wholly-owned subsidiary
of Rhone-Poulenc Rorer Inc.

     SECTION 8.03   NOTICES.

          All notices, requests, consents and other communications hereunder
shall be in writing and shall be delivered in person or by facsimile
transmission, overnight delivery by a recognized express courier company such
as Federal Express, DHL or UPS or mailed by certified or registered mail,
return receipt requested, addressed as follows:

          (a)  if to the Company:

               Guilford Pharmaceuticals Inc.
               6611 Tributary Street
               Baltimore, Maryland  21224

               Attention:  Thomas C. Seoh, Vice President, General Counsel
                           and Secretary






















                                    - 14 -
<PAGE>   16
               with a copy to:

               Hogan & Hartson, L.L.P.
               Suite 1600
               111 S. Calvert Street
               Baltimore, Maryland  21202-6191

               Attention:  Michael J. Silver

          (b)  if to the Purchaser:

               Rhone-Poulenc Rorer Inc.
               500 Arcola Road
               Collegeville, Pennsylvania  19426

               Attention:  General Counsel

          (c)  with a copy to

               Morgan, Lewis & Bockius LLP
               2000 One Logan Square
               Philadelphia, Pennsylvania  19103

               Attention:  James W. Jennings

or, in any case, at any other address or addresses as shall have been
furnished in writing by a party to the others.  All notices shall be deemed
given when delivered, if delivered in person or by facsimile or telecopy,
overnight delivery or five days after deposit in the U.S. Mail, if delivered
by U.S. Mail.

     SECTION 8.04   GOVERNING LAW.

          This Agreement shall be governed by and construed in accordance with
the substantive laws of the State of Delaware, excluding the choice of law
provisions thereof.

     SECTION 8.05   ENTIRE AGREEMENT.

          This Agreement, and the other Transaction Documents contain the
entire understanding of the parties relating to the subject matter hereof and
supersedes all prior agreements, arrangements, and understandings, written or
oral, between the parties relating to the subject matter hereof.

























                                    - 15 -
<PAGE>   17
     SECTION 8.06   COUNTERPARTS.

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

     SECTION 8.07   AMENDMENTS.

          This Agreement may be amended or modified only with the written
consent of the Company and the Purchaser.  No waiver shall be effective
without the written consent of the party entitled to waive compliance.

     SECTION 8.08   SEVERABILITY.

          If any provision of this Agreement shall be declared void or
unenforceable by any judicial or administrative authority, the validity of any
other provision and of the entire Agreement shall not be affected thereby.

     SECTION 8.09   TITLES AND SUBTITLES.

          The titles and subtitles used in this Agreement are for convenience
only and are not to be considered in construing or interpreting any term or
provision of this Agreement.

          IN WITNESS WHEREOF, the Company and the Purchaser have executed this
Agreement as of the day and year first above written.

                         GUILFORD PHARMACEUTICALS INC.


                         By:   /c/ Craig R. Smith, M.D.
                              ------------------------------------
                              Craig R. Smith, M.D.
                              President and Chief Executive Officer


                         RHONE-POULENC RORER INC.


                         By:   /c/ Claude Dupuis
                              ------------------------------------
                              Name: Claude Dupuis
                                    ------------------------------
                              Title:  Vice President
                                    ------------------------------



















                                    - 16 -


<PAGE>   1
                                                                  EXHIBIT 10.43



                                 LOAN AGREEMENT



                                    BETWEEN



                         GUILFORD PHARMACEUTICALS INC.


                                      AND



                            RHONE-POULENC RORER INC.


                           DATED AS OF JUNE 13, 1996





- --------------------------------------------------------------------------------




<PAGE>   2

                                 LOAN AGREEMENT


                 THIS LOAN AGREEMENT (the "Agreement"), is entered into as of
June 13, 1996, by and among Guilford Pharmaceuticals Inc., a Delaware
corporation (the "BORROWER"), and Rhone-Poulenc Rorer Inc., a Pennsylvania
corporation (the "LENDER").

                 WHEREAS, the Lender's subsidiary, Rhone-Poulenc Rorer
Pharmaceuticals Inc., a Delaware corporation ("RPR Pharmaceuticals"), the
Borrower and the Borrower's subsidiary, GPI Holdings, Inc., a Delaware
corporation ("GPI Holdings") have executed a Marketing, Sales and Distribution
Rights Agreement dated as of the date hereof (the "Marketing Rights
Agreement"), concerning an arrangement relating to the marketing, sale and
distribution worldwide (except for Denmark, Finland, Norway and Sweden) by RPR
Pharmaceuticals of the Borrower's anticancer therapeutic, GLIADEL(R) wafer and
other PCPP:SA-based polymer products containing carmustine for brain cancer and
certain related arrangements regarding the Borrower's other polymer cancer
therapeutic products, which contemplates the provision by the Lender of a line
of credit in the amount of $7,500,000 to be used by the Borrower in expanding
its manufacturing and related facilities; and

                 WHEREAS, the Lender is willing, upon and subject to the terms
and conditions hereof, to extend such a line of credit to the Borrower;

                 NOW, THEREFORE, the parties hereto agree as follows:

1.        DEFINITIONS

                 As used in this Agreement, the following terms (whether or not
underscored or spelled with initial capitals) shall, except where the context
otherwise requires, have the meanings specified in this Section (such
definitions to be equally applicable to the singular and plural forms thereof):

                 "AGREEMENT" shall mean this Loan Agreement, as the same from
time to time may be amended, supplemented or modified.

                 "APPLICABLE LAW" shall mean the laws of the State of Maryland.

                 "BORROWER" shall have the meaning provided in the recitals
hereto.

                 "BUSINESS DAY" shall mean a day other than a Saturday, Sunday
or other day on which commercial banks in Maryland are authorized or required
by law to close.

                 "COLLATERAL" shall mean (i) the Second Mortgage and the
property interest secured thereby, (ii) the Equipment and (iii) such other
security as the parties may agree to the Lender as





                                      -1-

<PAGE>   3




security for the Obligations.

                 "COST OF FUNDS" shall mean the lowest interest rate from time
to time paid by the Lender on its most senior Indebtedness.

                 "DEFAULT" shall mean any of the events specified in Section 6
hereof, whether or not any requirement for the giving of notice, the lapse of
time, or both, or any other condition, has been satisfied.

                 "DOLLAR" and "$" shall mean dollars in lawful currency of the
United States of America.

                 "EQUIPMENT" shall have the meaning given such term in Section
9-109(2) of the Uniform Commercial Code, including, without limitation,
machinery, equipment, furnishings, fixtures, and vehicles hereafter acquired by
the Borrower with Loan proceeds under this Agreement, including, without
limitation, all items of machinery and equipment of any kind, nature and
description, whether affixed to real property or not, as well as trucks and
vehicles of every description, trailers, handling and delivery equipment,
fixtures and office furniture, as well as all additions to, substitutions for,
replacements of or accessions to any of the items recited as aforesaid and all
attachments, components, parts (including spare parts) and accessories whether
installed thereon or affixed thereto and all fuel for any thereof.

                 "EVENT OF DEFAULT" shall mean any of the events specified in
Section 6 hereof, provided that any requirement for the giving of notice, the
lapse of time, or both, or any other condition, has been satisfied.

                 "GAAP" shall mean generally accepted accounting principles in
the United States of America in effect from time to time.

                 "GOVERNMENTAL AUTHORITY" shall mean any nation or government,
any state or other political subdivision thereof, and any entity exercising
executive, legislative, judicial, regulatory or administrative functions of or
pertaining to any government and any corporation or other entity owned or
controlled (through stock or capital ownership or otherwise) by any of the
foregoing.

                 "GPI HOLDINGS" shall have the meaning provided in the recitals
hereto.

                 "INDEBTEDNESS" of any Person shall mean:

                 (a)    all obligations of such Person for borrowed money or
for the deferred purchase price of property or services (including, without
limitation, all notes payable and drafts accepted representing extensions of
credit and all obligations evidenced by bonds, debentures, notes or other
similar instruments or on which interest charges are customarily paid);





                                      -2-

<PAGE>   4




                 (b)    the face amount of all letters of credit issued for the
account of such Person and, without duplication, all drafts drawn thereunder;
and

                 (c)    all other items (including, without limitation,
capitalized leases) which, in accordance with GAAP, would be included as
indebtedness on the liability side of a balance sheet of such Person as of the
date at which Indebtedness is to be determined.

                 "INITIAL FUNDING DATE" shall have the meaning specified in
Section 2.3 of this Agreement.

                 "LEASE" shall mean the Lease Agreement dated August 30, 1994.
between the Borrower as lessee and Crown Royal Limited Parntership as lessor,
relating to the property located at 6611 Tributary Street, Baltimore, Maryland.

                 "LENDER" shall have the meaning provided in the recitals
hereto.

                 "LIEN" shall mean any mortgage, security interest, deed of
trust, pledge, hypothecation, assignment, assigned deposit arrangement,
encumbrance, lien (statutory or other), claim, option, reservation,
right-of-way, easement, covenant, lease, condition, restriction, charge or
defect of any kind, or preference, priority or other security agreement or
preferential arrangement of any kind or nature whatsoever (including, without
limitation, any conditional sale or other type of title retention agreement,
any financing lease having substantially the same economic effect as any of the
foregoing, and the filing of any financing statement under the Uniform
Commercial Code or comparable law of any jurisdiction).

                 "LOAN" shall have the meaning specified in Section 2.1 of this
Agreement.

                 "LOAN DOCUMENTS" shall mean this Agreement, the Notes, the
Second Mortgage and the Pledge Agreement, and all certificates, documents and
instruments required by, referred to in or delivered pursuant to this
Agreement, the Notes, or the Pledge Agreement.

                 "MARKETING RIGHTS AGREEMENT" shall have the meaning provided
in the recitals hereto.

                 "MATERIAL ADVERSE EFFECT" shall mean any event which may have
a material adverse effect on the financial condition or results of operations
of the Borrower and its subsidiaries, taken as a whole.

                 "MIDFA" shall mean the Maryland Industrial Development
Financing Authority.

                 "NOTES" shall have the meaning specified in Section 2.3 of
this Agreement.





                                      -3-

<PAGE>   5




                 "OBLIGATIONS" shall mean:

                 (a)    all of the unpaid principal of and accrued interest on
the Notes; and

                 (b)    all other indebtedness, liabilities and obligations of
the Borrower to the Lender, whether now existing or hereafter incurred or
created under, arising out of, or in connection with this Agreement and the
Loan Documents, including, without limitation, any future advances hereunder or
thereunder.

                 "PERSON" shall mean an individual, partnership, corporation,
business trust, joint stock company, trust, unincorporated association, joint
venture, Governmental Authority or other entity of whatever nature.

                 "PLEDGE AGREEMENT" shall mean the pledge and security
agreement executed by the Borrower, in substantially the form of Exhibit B
attached hereto (together with all amendments, if any, thereafter from time to
time made thereto), pledging as collateral a first lien on the Equipment and
such other security as the parties may agree to the Lender as security for the
Obligations.

                 "PRODUCT" shall have the meaning provided in the Marketing
Rights Agreement.

                 "RPR PHARMACEUTICALS" shall have the meaning provided in the
recitals hereto.

                 "SECOND FUNDING DATE" shall have the meaning specified in
Section 2.3 of this Agreement.

                 "SECOND MORTGAGE" shall mean the second mortgage executed by
the Borrower, in form and substance satisfactory to the Lender, pledging as
collateral a second industrial leasehold mortgage on the Borrower's facility at
6611 Tributary Street, Baltimore, Maryland.

                 "SIGNET AGREEMENT" shall mean the Loan and Financing Agreement
dated December 5, 1994, by and among Maryland Economic Development Corporation,
the Borrower and Signet Bank/Maryland, or any agreement evidencing the renewal
or refinancing of the Indebtedness incurred thereunder.

                 "STOCK PURCHASE AGREEMENT" shall mean the Stock Purchase
Agreement of even date herewith (together with all amendments, if any,
thereafter from time to time made thereto), executed by the Borrower and the
Lender, pursuant to which the Lender or certain of its subsidiaries may
purchase common stock, par value $0.01 per share, of the Borrower.

                 "SUPPLY AGREEMENT" shall have the meaning specified in Section
2.4 of this Agreement.

                 "UNIFORM COMMERCIAL CODE" or "UCC" shall mean the provisions
of the Uniform Commercial Code adopted by and in effect in the State of 
Maryland.





                                      -4-

<PAGE>   6


2.     LOAN AND NOTES

        2.1      LOAN

                 Subject to the terms and conditions set forth herein, the
Lender agrees to extend to the Borrower, a line of credit in the principal
amount of $7,500,000 (the "Loan").  The Loan shall be made (subject to the
conditions precedent specified in Section 4 hereof) in accordance with the
procedures specified in Section 2.3. hereof.

        2.2      INTEREST

                 The principal amount outstanding from time to time of the Loan
shall bear interest, from the date of the Initial Funding Date until paid in
full, at an annual rate (computed on the basis of a 360-day year and applied to
the actual number of days in each interest calculation period) equal to the
Lender's Cost of Funds.  Such rate of interest shall be adjusted simultaneously
with each change in the Lender's Cost of Funds, provided, however, that no rate
of interest will be charged which would, over the term of the Loan, exceed the
maximum, lawful, non-usurious rate of interest (if any) which under Applicable
Law the Lender is permitted to charge the Borrower on this Agreement and the
Notes from time to time.  Notwithstanding the foregoing, during the continuance
of an Event of Default hereunder (after the expiration of any cure periods
related to such Event of Default), interest shall accrue on the unpaid
principal balance of the Loan at an annual rate equal to the Lender's Cost of
Funds plus three percent (3%).

        2.3      FUNDING

                 Subject to the terms and conditions set forth herein
including, without limitation, the conditions precedent specified in Section 4
hereof, funding of the Loan by the Lender will take place as follows:

                 2.3.1        INITIAL INSTALLMENT

                 The Lender will disburse $4,000,000 (the "Initial
Installment") by wire transfer to an account designated by the Borrower on a
date (the "Initial Funding Date") specified by the Borrower to the Lender,
which date shall be no earlier than the later of (i) January 2, 1997 or (ii)
the first Business Day following the date on which RPR Pharmaceuticals is
required to pay to the Borrower the amount specified in Section III.D.3. of the
Marketing Rights Agreement; and





                                      -5-

<PAGE>   7





                 2.3.2    SECOND INSTALLMENT

                 The Lender will disburse $3,500,000 (the "Second Installment")
by wire transfer to an account designated by the Borrower on the date (the 
"Second Funding Date") specified in writing by the Borrower to the Lender which
date shall be no earlier than twelve nor later than eighteen months after
the Initial Funding Date; the Initial Funding Date and the Second Funding Date
may sometimes be referred to collectively as the "Funding Dates" and
individually as a "Funding Date." Notwithstanding the foregoing, the parties
agree to consult in good faith to consider making available to the Borrower the
proceeds of the Second Installment on a different timetable in order to enable
the Borrower to meet RPR Pharmaceutical's forecast for demand of the Product
and the Borrower's manufacturing plan for the Product under the Supply
Agreement.

                 The Borrower's indebtedness to the Lender for the Loan,
together with interest accrued thereon, shall be evidenced by promissory notes
executed by the Borrower and delivered to the Lender on each Funding Date
(hereinafter called the "Notes"), substantially in the form of Exhibits A-1 and
A-2 attached hereto.

                 2.3.3    TERMINATION

                 Notwithstanding anything herein to the contrary, if, prior to
the advance of any funds by the Lender under this Agreement, RPR
Pharmaceuticals has exercised its right to terminate the Marketing Rights
Agreement as provided in Section IV.D.3.  thereof, the Lender shall have no
further obligation to advance any funds hereunder and this Agreement shall
automatically terminate and be of no further force or effect.

        2.4      PAYMENT

                 2.4.1    INTEREST

                 Interest on each Loan installment shall be due and payable in
quarterly installments beginning on the Initial Funding Date or the Second
Funding Date, as the case may be, until the principal amount relating to such
Loan installment shall be paid in full.  Any payment of interest may be made,
at the option of the Borrower, in cash or offset against any undisputed payment
then due by the Lender or RPR Pharmaceuticals (a) to the Borrower under the
Manufacturing and Supply Agreement, dated as of the date hereof, by and between
the Borrower and RPR Pharmaceuticals (the "Supply Agreement") or (b) to GPI
Holdings under the Marketing Rights Agreement; provided that the Borrower shall
furnish the Lender with at least five Business Days prior notice of its
intention to offset and, if requested by the Lender, supporting documentation
of its right to offset.

                 2.4.2    PRINCIPAL

                 The principal amount of each Loan installment shall be due and
payable upon the





                                      -6-

<PAGE>   8




fifth anniversary date of the Funding Date on which such Loan installment was
made.  Unless the principal balance of the Notes is accelerated as provided
therein or in Section 6 hereof, no principal amount of any Loan installment
shall be due and payable until the fifth anniversary date of the Initial
Funding Date or the Second Funding Date, as the case may be.  The principal
amount of any Loan installment may be prepaid in whole or in part at any time
or times without premium or penalty, at the option of the Borrower, in cash or
offset against any undisputed payment then due by the Lender or RPR
Pharmaceuticals (a) to the Borrower under the Supply Agreement or (b) to GPI
Holdings under the Marketing Rights Agreement; provided that the Borrower shall
furnish the Lender with at least five Business Days prior notice of its
intention to offset and, if requested by the Lender, supporting documentation
of its right to offset.

3.      REPRESENTATIONS AND WARRANTIES OF THE BORROWER

                 In order to induce the Lender to enter into this Agreement and
to make the Loan, the Borrower hereby makes the following representations and
warranties to the Lender, which representations and warranties shall survive
the execution and delivery hereof and of the Notes:

        3.1      CORPORATE STATUS

                 The Borrower is a corporation duly organized, validly existing
and in good standing under the laws of the State of Delaware; has the power and
authority, corporate and otherwise, to own, operate and lease its properties,
to carry on its business as currently conducted, to execute and deliver this
Agreement, the Notes and the other Loan Documents, and to perform all of its
obligations under this Agreement, the Notes and the other Loan Documents.  The
Borrower is duly qualified to conduct business and is in good standing under
the laws of the State of Maryland and each other jurisdiction in which the
conduct of its business requires such qualification, except where the failure
to qualify to do business would not have a Material Adverse Effect.

        3.2      CERTIFICATE OF INCORPORATION AND BYLAWS
        
                 The Borrower has furnished to the Lender a complete and
correct copy of its Amended and Restated Certificate of Incorporation, as
presently in effect, certified as of a recent date by the Secretary of State of
the State of Delaware, and a complete and correct copy of the bylaws of the
Borrower, as currently in effect, certified by its corporate secretary.

        3.3      AUTHORIZATION; NO VIOLATIONS

                 The execution, delivery and performance by the Borrower of
this Agreement, the Notes, and the other Loan Documents and the fulfillment of
and the compliance with the respective terms and provisions thereof, have been
duly and validly authorized by all necessary





                                      -7-

<PAGE>   9




corporate actions on the part of the Borrower (none of which actions have been
modified or rescinded, and all of which actions are in full force and effect),
and do not and will not:

                 3.3.1            APPROVAL

                 Require any consent or approval of the stockholders of the
Borrower or of any Governmental Authority;

                 3.3.2            VIOLATION OF LAW

                 Conflict with, or violate any provision of, any statute, law,
ordinance, rule, regulation, order, writ, judgment, injunction, decree,
determination or award of any arbitrator or Governmental Authority having
applicability to the Borrower, any of its properties, or any provision of its
Amended and Restated Certificate of Incorporation or bylaws;

                 3.3.3            NO DEFAULT OF OTHER OBLIGATIONS

                 Conflict with, or result in any breach of, or constitute a
default under, result in the acceleration of, create in any party the right to
accelerate, terminate, or to modify or cancel, any indenture or loan or credit
agreement or any other material agreement, commitment, lease, contract, deed of
trust, mortgage, note or other instrument to which the Borrower is a party or
by which it or any of its properties may be bound or affected; or

                 3.3.4            DEBTS AND LIENS

                 Result in or require the creation or imposition of or result
in the acceleration of any Indebtedness or any Lien of any nature upon, or with
respect to, the Borrower or any of the properties now owned or hereafter
acquired by the Borrower except as contemplated herein; or

                 In each case except for such conflicts, breaches or violations
as would not individually or in the aggregate have a material adverse effect on
the Borrower's ability to perform the Obligations or on the Collateral.

        3.4      VALIDITY AND BINDING NATURE

                 This Agreement and the Notes constitute, and each of the other
Loan Documents when executed and delivered hereunder will constitute, a legal,
valid and binding obligation of the Borrower, enforceable against each in
accordance with its respective terms.

        3.5      LITIGATION

                 No actions, suits, claims, arbitrations, litigation, or
proceedings or investigations before or by any arbitrator or Governmental
Authority have been instituted or threatened to restrain, prohibit, invalidate
or otherwise affect the transactions contemplated by this Agreement.





                                      -8-

<PAGE>   10





        3.6      PLEDGE AGREEMENT

                 The provisions of the Pledge Agreement will be effective to
create in favor of the Lender a legal, valid, and enforceable first priority
security interest in all of the Equipment and such other security as the
parties may agree, (and as more specifically defined in the Pledge Agreement);
and, upon filing of the UCC financing statements identified therein, such
security interest shall be perfected.

        3.7      SECOND MORTGAGE

                 The provisions of the Second Mortgage will be effective to
create in favor of the Lender a legal, valid, and enforceable second priority
security interest in the property interest secured thereby, and upon the
recording thereof in the appropriate office, such security interest shall be
perfected.

        3.8      PLACE OF BUSINESS; CHIEF EXECUTIVE OFFICE

                 The address stated in Section 8.2 hereof is the principal
place of business and chief executive office of the Borrower and the place
where its records concerning the Collateral are and will be kept.  The Borrower
does not conduct business under any trade, assumed or fictitious name and has
not done so at any time within the past five years.

        3.9      NO VIOLATION

                 The Borrower is not in violation of any term or provision of
its Amended and Restated Certificate of Incorporation or bylaws.

        3.10     NO EXERCISE OF REMEDIES AGAINST THE BORROWER

                 The Borrower has not received notice of the intent by any
party to exercise any of its remedies upon the occurrence of an event of
default by the Borrower under the Signet Agreement or the Lease.

        3.11     COMPLIANCE WITH LAW

                 The Borrower is in compliance with all laws, ordinances, rules
and regulations to which it its subject (including, without limitation,
applicable environmental, health and safety laws and regulations), except where
the failure to so comply would not have a Material Adverse Effect.





                                      -9-

<PAGE>   11





        3.12     MATERIAL ADVERSE CHANGE

                 There has been no material adverse change affecting the
Borrower since the date of the last Quarterly Report on Form 10-Q filed by the
Borrower with the Securities and Exchange Commission.

        3.13     DISCLOSURE

                 Neither the Loan Documents nor any other document delivered to
the Lender in connection therewith contain any misrepresentation or untrue
statement of a material fact or omit state any material fact necessary to make
the Loan Documents or such other document not misleading.  There is no fact
that the Borrower has not disclosed to the Lender that materially and adversely
affects or would materially and adversely affect the Collateral or the 
Borrower's ability to perform the Obligations.

4.      CONDITIONS PRECEDENT

                 The obligation of the Lender to make the Loan is subject to
the satisfaction, at or before each Funding Date, of the following conditions
precedent, the satisfaction of which shall be certified in writing by an
officer of the Borrower on each Funding Date:

        4.1      REPRESENTATIONS AND WARRANTIES; COMPLIANCE

                 All representations and warranties made by the Borrower in
this Agreement or in the other Loan Documents or otherwise made in writing in
connection herewith or therewith shall be true and correct on and as of the
applicable Funding Date with the same force and effect as though such
representations and warranties had been made at and as of that Funding Date.
All of the agreements, terms, covenants and conditions required by this
Agreement to be complied with and performed by the Borrower on or prior to such
Funding Date shall have been complied with and performed.

        4.2      NO DEFAULT

                 No Default or Event of Default under this Agreement and no
event of default by the Borrower under the Marketing Rights Agreement, the
Supply Agreement or the Stock Purchase Agreement shall have occurred and be
continuing on the applicable Funding Date.

        4.3      PLEDGE AGREEMENT AND SECOND MORTGAGE

                 The Borrower shall have executed the Pledge Agreement and the
Second Mortgage and delivered the same to Lender no less than 15 days prior to
the Initial Funding Date,





                                      -10-

<PAGE>   12




and the Lender shall be entitled to file any and all financing statements and
to record any and all documents with the appropriate recording offices to
perfect the security interests granted thereby.

        4.4      RECEIPT OF NOTE

                 The Lender shall have received an originally executed copy of
the Note evidencing the Initial Installment or the Second Installment, as the
case may be.

5.      AFFIRMATIVE COVENANTS

                 Until all Obligations of the Borrower under this Agreement,
under the Notes and under the other Loan Documents are paid in full and
performed, the Borrower hereby covenants and agrees that it shall, unless the
Lender otherwise consents in advance in writing:

        5.1      PAYMENT OF NOTES

                 Punctually pay the principal of and interest on the Notes at
the times and places and in the manner specified herein or therein.

        5.2      CORPORATE EXISTENCE

                 (a)      Preserve, maintain, and keep in full force and 
effect its corporate existence under the laws of a state of the United
States of America; (b) preserve, maintain, and keep in full force and effect
all rights, franchises, and privileges necessary or desirable in the opinion of
the Board of Directors of the Borrower in the normal conduct of its business;
and (c) qualify and remain qualified as a foreign corporation in Maryland and
in each jurisdiction in which such qualification is necessary in view of its
business and operations and the ownership of its properties.

        5.3      OWNERSHIP, USE AND MAINTENANCE OF COLLATERAL

                 (a) Be the sole owner of, and have good and marketable title
to, the Collateral, free and clear of all liens and encumbrances (excepting
only the liens of the Lender and the lien of Signet Bank and MIDFA on the
property secured by the Second Mortgage); (b) not dispose of, transfer or
further encumber its interest in the Collateral; (c) to the extent that any
Equipment purchased with Loan proceeds shall constitute fixtures, to use
reasonable efforts to obtain a waiver of any other party's prior rights in such
Equipment; (d) use the Collateral solely in the conduct of its business and in
a careful and proper manner; and shall not change the location of any item of
Equipment from 6611 Tributary Street, Baltimore, Maryland, or such other
location as shall be identified to the Lender prior to the purchase thereof;
and (d) keep all Collateral in good repair, working order and condition, and
from time to time make all necessary or desirable





                                      -11-

<PAGE>   13




repairs thereto and renewals and replacements thereof, except where the failure
to do so would not have a material adverse effect on the Collateral.

        5.4      STATEMENTS, NOTICES AND REPORTS

                 Furnish to the Lender:

                 (i)      as soon as available but in no event more
than 10 days after filing the same with the United States Securities and
Exchange Commission (the "SEC"), a copy of the Borrower's Form 10-Q for each
fiscal quarter;

                 (ii)     as soon as available but in no event more
than 10 days after filing the same with the SEC, a copy of the Borrower's
Annual Report to shareholders and/or Form 10-K filed with the SEC;

                 (iii)    promptly after the sending or filing thereof,
copies of all financial statements and reports that the Company sends to its
stockholders and copies of all other regular, periodic, and special reports
which the Company files with the SEC;

                 (iv)     promptly after the receipt thereof, copies of
all notices of the occurrence of an event of default by the Borrower under the
Signet Agreement or the Lease, which notice includes a statement by the
non-defaulting party of its intention to pursue its remedies under the Signet
Agreement or the Lease, as the case may be; and

                 (v)      written notice 30 days prior to any
contemplated change in the name or address of the Borrower.

        5.5      USE OF PROCEEDS

                 Apply the proceeds of the Initial Installment solely for the
expansion of its facilities involved in or supporting the production of the
Product (including without limitation polymer component and wafer production,
stability and other storage, analytical, process development, packaging and
shipping facilities), and apply the proceeds of the Second Installment solely
toward the construction of a second manufacturing facility at 6611 Tributary
Street, Baltimore, Maryland, or such other location as may be chosen by the
Borrower with the consent of the Lender (such consent not to be unreasonably
withheld), for the scale-up and production of the Product and other polymer
systems, or in each case for such other uses as the parties may mutually agree.
The parties agree that the Borrower's application of Loan proceeds to refinance
the Borrower's expenditures in the second half of calendar 1996 for the
foregoing purposes shall be deemed to be in compliance with this use of
proceeds covenant.  The Borrower will provide the Lender with reasonable
documentation evidencing the use of proceeds in compliance with this covenant.





                                      -12-

<PAGE>   14





        5.6      TAXES

                 Pay or cause to be paid when due all taxes and fees relating
to the ownership and use of the Collateral.

        5.7      INSURANCE

                 5.7.1    COVERAGE

                 Keep the Collateral or cause it to be kept insured against
loss or damage due to fire and the risks normally included in extended
coverage, malicious mischief and vandalism, for the full replacement value
thereof.  All insurance maintained on the Equipment for loss or damage shall
list the Lender as an additional insured.  The proceeds of such insurance
payable as a result of loss of or damage to the Equipment shall be applied
toward the replacement, restoration or repair of the Equipment that may be
lost, stolen, destroyed or damaged, provided, however, that if an Event of
Default has occurred and is continuing, such proceeds may be applied, at the
Lender's option, (a) toward the replacement, restoration or repair of the
Equipment that may be lost, stolen, destroyed or damaged, or (b) toward payment
of the balance outstanding on the Notes or the Obligations.  In addition, the
Borrower shall also carry public liability insurance against both personal
injury and property damage.  The Lender shall also be named as a loss payee to
the extent of its interest on any fire or similar insurance policy maintained
with respect to the property secured by the Second Mortgage.  The Borrower
shall pay or cause to be paid the premiums therefor and deliver to the Lender
evidence satisfactory to Lender of such insurance coverage.  The Borrower shall
use its reasonable best efforts to provide to the Lender, not less than 15 days
prior to the scheduled expiration or lapse of such insurance coverage, evidence
satisfactory to the Lender of renewal or replacement coverage.

                 5.7.2    ENDORSEMENTS

                 The Borrower shall use its reasonable best efforts to ensure
that each insurer shall agree, by endorsement upon the policy or policies
issued by it, or by independent instrument furnished to the Lender, that (a) it
will give the Lender 30 days prior written notice of the effective date of any
material alteration or cancellation of such policy; and (b) insurance as to the
interest of any named loss payee other than the Borrower shall not be
invalidated by any actions, inactions, breach of warranty or conditions or
negligence of the Borrower with respect to such policy or policies.

        5.8      COMPLIANCE WITH LAWS

                 Comply with the requirements of all applicable statutes, laws,
ordinances, rules, regulations, determinations, judgments, decrees and orders
of any Governmental Authority, noncompliance with which could have a Material
Adverse Effect.





                                      -13-

<PAGE>   15





        5.9      CORPORATE EXISTENCE

                 At all times maintain its corporate existence except as
expressly permitted herein.  Borrower shall not consolidate with, merge into,
or convey, transfer or lease substantially all of its assets as an entirety to
(such actions being referred to as an "Event"), any Person, unless such Person
shall (i) be an entity organized and existing under the laws of the United
States of America or any state or the District of Columbia, and (ii) not less
than 30 days before the Event execute and deliver to the Lender an agreement
containing an effective assumption by such Person of the due and punctual
performance and observance of each covenant and condition of this Agreement to
be performed or observed by the Borrower.

        5.10     SECURITY INTERESTS IN PRODUCT

                 The Borrower shall not grant any security interest in, on or
against the Product or the Patents, Know-How or Licensed Trademark relating to
the Product (each as defined in the Marketing Rights Agreement).

        5.11     INDEMNITY

                 The Borrower shall indemnify, defend and hold harmless the
Lender, its affiliates, subsidiaries, successors and assigns, and their
respective directors, officers and employees, from and against any and all
claims, actions and suits (including, without limitation, related attorneys'
fees) of any kind, nature or description whatsoever arising, directly or
indirectly, in connection with any of the Collateral (other than any claim,
action or suit of arising out of the Lender's breach of any of the provisions
of this Agreement or any other Loan Document or resulting from the Lender's
gross negligence or willful misconduct), including, without limitation, any
liability or alleged liability under any federal, state or local environmental
laws that relate to any item of the Collateral or its use, ownership or
disposition, the Lender's interest therein or any substances contained therein
or discharged therefrom.  The obligations of the Borrower under this Section
shall survive the expiration or termination of this Agreement.

6.      EVENTS OF DEFAULT

                 The occurrence of any one or more of the following events
shall constitute an Event of Default hereunder:

        6.1      PAYMENT OF PRINCIPAL, INTEREST AND OTHER AMOUNTS

                 The Borrower shall fail to pay, when due, the principal, any
interest, or any other sum payable under the Notes (whether upon maturity
thereof, upon any installment payment date, upon any prepayment date, upon
acceleration or otherwise), and such failure shall continue





                                      -14-

<PAGE>   16




for two (2) Business Days after written notice of the existence of such Default
shall have been received by the Borrower from the Lender.

        6.2      REPRESENTATIONS AND WARRANTIES

                 Any representation or warranty made by or on behalf of the
Borrower herein or in any other Loan Document shall prove to have been 
incorrect or breached on or as of any date as of which made.

        6.3      OBSERVANCE OF OTHER PROVISIONS

                 The Borrower shall fail to observe or perform any other term,
covenant or agreement contained in this Agreement or in any other Loan Document
and any such failure shall continue unremedied for thirty (30) Business Days
after written notice of the existence of such Default shall have been received
by the Borrower from the Lender.

        6.4      INSOLVENCY AND SIMILAR EVENTS

                 (a)      A decree or order for relief of the Borrower
shall be entered by a court of competent jurisdiction, except if the decree or
order is stayed or lifted within sixty (60) days, in any involuntary case
involving the Borrower under any bankruptcy, insolvency, or other similar law
now or hereafter in effect, or a receiver, liquidator, assignee, custodian,
trustee, sequestrator or other similar agent for the Borrower or for any
substantial part of the Borrower's affairs shall be appointed, or any action
shall be taken by any creditor (other than the Lender) of the Borrower
preparatory to or for the purpose of commencing any such involuntary case,
appointment, winding-up or liquidation.

                 (b)      The Borrower shall commence a voluntary case
under any bankruptcy, insolvency or other similar law now or hereafter in
effect, or the Borrower shall consent to the entry of an order for relief in an
involuntary case under any such law or to the appointment of or taking
possession by a receiver, liquidator, assignee, trustee, custodian,
sequestrator or other similar agent for the Borrower or for any substantial
part of the Borrower's assets or property, or the Borrower shall make any
general assignment for the benefit of creditors, or the Borrower shall take any
action preparatory to or otherwise in furtherance of any of the foregoing, or
the Borrower shall fail generally to pay its debts as such debts come due.

        6.5      LIQUIDATION AND DISSOLUTION

                 The Borrower shall be liquidated or dissolved or shall lose
its corporate or legal status by forfeiture or by any judicial or
administrative proceeding.





                                      -15-

<PAGE>   17





        6.6      CROSS DEFAULTS

                 The Borrower shall be in default under or with respect to (i)
any Loan Document, (ii) the Stock Purchase Agreement, (iii) the Marketing
Rights Agreement, (iv) the Signet Agreement, or (v) the Lease, in each case
after all applicable cure periods have expired and, with respect to clause
(iii), such default results in the termination by the Lender of the Marketing
Rights Agreement and the Borrower shall have 60 days following such termination
before such event shall be an Event of Default hereunder, and with respect to
clauses (iv) and (v) the non-defaulting party shall have commenced pursuit of
its remedies under the Signet Agreement or the Lease, as the case may be.

        6.7      JUDGMENTS

                 A final judgment, which alone or with other outstanding final
judgments against the Borrower exceeds a total of $100,000 is rendered against
the Borrower and, if within 30 days after entry thereof, the judgment shall not
have been discharged or execution thereof stayed pending appeal, or if within
30 days after the expiration of any stay, the judgment shall not have been
discharged.

                 Upon the occurrence of any Event of Default (other than one
specified in Section 6.4 or 6.5 hereof), the Lender may:  (i) declare its
obligation to make the Loan to be terminated, and declare the entire unpaid
principal amount of the Notes, all interest accrued and unpaid thereon, and all
other amounts payable under this Agreement, the Notes and the other Loan
Documents, to be accelerated and to be immediately due and payable, whereupon
the Notes, all such accrued interest and all such amounts shall become and be
immediately due and payable, without presentment, demand, protest or further
notice of any kind, all of which are hereby expressly waived by the Borrower,
anything contained herein or in the other Loan Documents to the contrary
notwithstanding; and (ii) in addition thereto, and not in substitution
therefor, may exercise any one or more of the rights and remedies exercisable
by the Lender under other provisions of this Agreement, under other Loan
Documents, or provided by applicable law.  Upon the occurrence of an Event of
Default specified in Section 6.4 or 6.5, the entire unpaid principal amount of
the Notes, all interest accrued and unpaid thereon, and all other amounts
payable under this Agreement, the Notes and the other Loan Documents shall be
due and payable automatically and without any notice to the Borrower.

7.      SECURITY

                 As collateral security for the prompt and complete payment and
performance when due of all the Obligations, and in order to induce the Lender
to enter into this Agreement, the Borrower shall grant to the Lender (i) the
Second Mortgage, and (ii) a first lien on the Equipment and such other security
as the parties may agree, to be evidenced by the Pledge Agreement.





                                      -16-

<PAGE>   18





8.      MISCELLANEOUS

        8.1      ADDITIONAL ACTIONS AND DOCUMENTS

                 The Borrower hereby agrees to take or cause to be taken such
further actions, to execute, deliver and file or cause to be executed,
delivered and filed such further documents and instruments, and to obtain such
consents, as may be necessary or as may be reasonably requested in order to
fully effectuate the purposes, terms and conditions of this Agreement and of
the other Loan Documents, whether before, at or after the closing of
transactions contemplated hereby and thereby.

        8.2      NOTICES

                 All notices, demands, requests, or other communications which
may be or are required to be given, served, or sent by any party to any other
party pursuant to this Agreement shall be in writing and shall be mailed by
first-class, registered or certified mail, return receipt requested, postage
prepaid, or transmitted by hand delivery (including delivery by courier),
telegram, telex, or facsimile transmission, addressed as follows:

        (i)      If to the Borrower:

                 Guilford Pharmaceuticals Inc.
                 6611 Tributary Street
                 Baltimore, Maryland  21224
                 Attention:  Thomas C. Seoh
                   Vice President, General Counsel and Secretary
                 Telephone:  (410) 631-6441
                 Facsimile:  (410) 631-6450

        with a copy (which shall not constitute notice) to:

                 Michael J. Silver, Esquire
                 Hogan & Hartson L.L.P.
                 111 South Calvert Street, 16th Floor
                 Baltimore, Maryland  21202
                 Telephone:  (410) 659-2741
                 Facsimile:  (410 539-6981





                                      -17-

<PAGE>   19




        (ii)     If to the Lender:

                 Rhone-Poulenc Rorer Inc.
                 500 Arcola Road
                 Collegeville, Pennsylvania  19426
                 Attention: General Counsel
                 Telephone:  (610) 454-8000
                 Facsimile:  (610) 454-3807

                 Each party may designate by notice in writing a new address to
which any notice, demand, request or communication may thereafter be so given,
served or sent.  Each notice, demand, request, or communication which shall be
mailed, delivered or transmitted in the manner described above shall be deemed
sufficiently given, served, sent and received for all purposes at such time as
it is delivered to the addressee (with the return receipt, the delivery
receipt, the affidavit of messenger or (with respect to a telex) the answerback
being deemed conclusive (but not exclusive) evidence of such delivery) or at
such time as delivery is refused by the addressee upon presentation.

        8.3      SEVERABILITY

                 If fulfillment of any provision of this Agreement or of the
other Loan Documents, or performance of any transaction related hereto or
thereto, at the time such fulfillment or performance shall be due, shall
involve transcending the limit of validity prescribed by law, then the
obligation to be fulfilled or performed shall be reduced to the limit of such
validity; and if any clause or provision contained in this Agreement or in the
other Loan Documents operates or would operate prospectively to invalidate this
Agreement or the other Loan Documents, in whole or in part, then only such
clause or provision shall be held ineffective, as though not herein contained,
and the remainder of this Agreement and of the other Loan Documents shall
remain operative and in full force and effect.

        8.4      SURVIVAL

                 It is the express intention and agreement of the parties
hereto that all covenants, agreements, statements, representations, warranties
and indemnities made by the Borrower in this Agreement shall survive the
execution and delivery of this Agreement, the making of all advances and
extensions of credit, and the execution and delivery of all other Loan
Documents.

        8.5      WAIVERS

                 No waiver by the Lender of or consent by the Lender to a
variation from any provision of this Agreement or of any other Loan Document
shall be effective unless made in a written instrument duly executed on behalf
of the Lender by its duly authorized officer.  No such





                                      -18-

<PAGE>   20




waiver shall be considered a waiver of any rights of the Lender with respect to
the particular obligations of the Borrower or with respect to the conditions to
the obligations of the Lender beyond the rights or conditions as expressly
waived, or a waiver in any respect with regard to any other rights of the
Lender with respect to any other obligations of the Borrower.  No failure or
delay on the part of the Lender in exercising any power, right or privilege
under this Agreement or under any other Loan Document shall operate as a waiver
thereof, nor shall any single or partial exercise of any such right or power
preclude any other or further exercise thereof, or the exercise of any other
right or power under this Agreement or under any other Loan Document.  No other
actions taken by the Lender, including, without limitation, any investigation
by or on behalf of the Lender, and no failure to take action, shall be deemed
to constitute a waiver or an extension by the Lender of compliance with any
representation, warranty, condition, agreement or indemnification set forth in
this Agreement or in any other Loan Document.

        8.6      RIGHTS CUMULATIVE

                 The rights and remedies herein or in any of the other Loan
Documents expressly provided are cumulative and not exclusive of any other
rights or remedies which the Lender or the then holder of the Notes otherwise
would have at law or in equity or otherwise.  No notice to or demand on the
Borrower in any case shall entitle the Borrower to any other or further notice
or demand in similar or other circumstances, or constitute a waiver of the
rights of the Lender or the then holder of the Notes to be entitled to any
other or further action in any circumstances without notice or demand.

        8.7      BINDING EFFECT

                 Subject to any provisions hereof restricting assignment, this
Agreement and the other Loan Documents shall be binding upon and shall inure to
the benefit of the parties hereto and their respective successors and assigns.

        8.8      ASSIGNMENT

                 The Borrower may not assign its rights under this Agreement or
under the other Loan Documents or any interest herein or therein, or attempt to
have any other person or entity assume their obligations under this Agreement
or under the other Loan Documents, without the prior written consent of the
Lender.

        8.9      AMENDMENT

                 No amendment, modification or discharge of this Agreement
shall be valid or binding unless set forth in writing and duly executed by the
party against whom enforcement of the amendment, modification or discharge is
sought.





                                      -19-

<PAGE>   21





        8.10     ENTIRE AGREEMENT

                 This Agreement (including the Loan Documents and the Exhibits
hereto) constitutes the entire agreement between the parties hereto with
respect to the Loan, and it supersedes all prior oral or written agreements,
commitments or understandings with respect to the matters provided for herein.

        8.11     TERMINATION

                 This Agreement shall terminate upon payment in full of all
amounts payable and performance of all other Obligations owed by the Borrower
to the Lender under this Agreement, the Notes and the other Loan Documents.

        8.12     PAYMENTS

                 If any payment or performance of the Notes or of any of the
other Obligations becomes due on a day other than a Business Day, the due date
shall be extended to the next succeeding Business Day, and interest thereon (if
applicable) shall be payable at the then applicable rate during such extension.


        8.13     HEADINGS

                 Section and subsection headings contained in this Agreement
are inserted for convenience of reference only, shall not be deemed to be a
part of this Agreement for any purpose, and shall not in any way define or
affect the meaning, construction or scope of any of the provisions hereof.

        8.14     GOVERNING LAW

                 This Agreement, the Notes and the other Loan Documents, the
rights and obligations of the parties hereto, and any claims or disputes
relating thereto, shall be governed by and construed in accordance with the
laws of the State of Pennsylvania.

        8.15     EXECUTION

                 To facilitate execution, this Agreement may be executed in as
many counterparts as may be required; and it shall not be necessary that the
signatures of, or on behalf of, each party, or that the signatures of all
Persons required to bind any party, appear on each counterpart; but it shall be
sufficient that the signature of, or on behalf of, each party, or that the
signatures of the Persons required to bind any party, appear on one or more of
the counterparts.  All counterparts shall collectively constitute a single
agreement.  It shall not be necessary in making proof of this Agreement to
produce or account for more than a number of counterparts containing





                                      -20-

<PAGE>   22




the respective signatures of, or on behalf of, all of the parties hereto.

        8.16     RIGHT TO PERFORM

                 If the Borrower fails to perform or comply with any of its
agreements contained herein or in any other Loan Document, the Lender shall
have the right, but not the obligation, to effect such performance or
compliance, and the amount of any out-of-pocket expenses and other reasonable
expenses (including reasonable attorneys' fees) of the Lender thereby incurred,
together with interest thereon, shall be due and payable by the Borrower on
demand.

                 IN WITNESS WHEREOF, each of the undersigned has duly executed
this Agreement, or has caused this Agreement to be duly executed on its behalf,
as of the day and year first hereinabove set forth.


                                      GUILFORD PHARMACEUTICALS INC.:
                                  
Attest:                           
                                  
                                  
                                  
/c/ Andrew R. Jordan                  By   /c/ Craig R. Smith
- --------------------                       ------------------
                                  
                                  
                                  
Vice President & Chief                President & Chief Executive Officer
- ----------------------                -----------------------------------
Financial Officer                                 [Title]
- -----------------                                                
      [Title]          
                                  
                                  
                                  
                                      RHONE-POULENC RORER INC.:

Attest:



/c/ R. B. Young                       By      /c/ Claude Dupuis
- ---------------                               -----------------



Secretary                                     Vice President
- ---------                                     --------------
 [Title]                                        [Title]





                                      -21-

<PAGE>   23




                                                                     EXHIBIT A-1




                                      NOTE


$4,000,000                                                        ________, 199_

                 FOR VALUE RECEIVED, Guilford Pharmaceuticals Inc., a Delaware
corporation, (the "Maker"), promises to pay to the order of Rhone-Poulenc
Rorer Inc. (the "Holder"), the principal amount of FOUR MILLION DOLLARS
($4,000,000) together with interest on the unpaid principal amount hereof from
the date hereof, until paid in full, said interest to be due and payable on a
quarterly basis at a rate per annum (computed on the basis of a 360 day year
and applied to the actual number of days elapsed in each interest calculation
period) equal to the Holder's Cost of Funds, as defined in the Loan Agreement,
dated as of June 13, 1996 between Maker and the Holder (the "Loan Agreement"),
with the entire remaining unpaid principal amount (together with accrued
interest thereon) to be due and payable in a single payment on the fifth
anniversary of the date hereof.  All payments hereunder shall be made in lawful
money of the United States of America, without offset, provided, however, that,
as provided in Loan Agreement, the Maker shall be entitled to offset against
any amount due hereunder any undisputed payment then due by the Holder or RPR
Pharmaceuticals (a) to the Maker under the Supply Agreement or (b) to GPI
Holdings under the Marketing Rights Agreement, each as defined in the Loan
Agreement.

                 The unpaid principal amount of this Note may be prepaid in
whole or in part at any time or times without premium or penalty in accordance
with the terms of the Loan Agreement.  Each prepayment shall be applied first
to the payment of all interest and other amounts accrued hereunder on the date
of any such prepayment, and the balance of any such prepayment shall be applied
to the principal amount hereof.  No prepayment shall entitle any person to be
subrogated to the rights of the Holder unless and until this Note has been paid
in full.

                 This Note evidences a loan advanced by the Holder for the
benefit of the Maker as a borrower under the Loan Agreement and is secured by
(i) a Second Mortgage (the "Second Mortgage"), of even date herewith, made and
executed by the Maker for the benefit of the Holder, and (ii) a Pledge
Agreement (the "Pledge Agreement"), of even date herewith, made and executed by
the Holder and the Maker for the benefit of the Holder.  Neither the reference
to the Loan Agreement or to the Second Mortgage or the Pledge Agreement nor any
provision thereof shall affect or impair the absolute and unconditional
obligation of the Maker to pay the principal amount hereof, together with
interest accrued thereon, when due.

                 This Note shall evidence, and the Second Mortgage and the
Pledge Agreement shall secure, the indebtedness described herein and any future
loans or advances or payments that may be made to or on behalf of the Maker by
the Holder at any time or times hereafter under the Loan Agreement, and any
such loans or advances or payments shall be added to and shall bear interest at
the same rate as the principal indebtedness hereunder.

                 The occurrence of any one or more of the following shall
constitute an event of default ("Event of Default") hereunder:



                                     A-1

<PAGE>   24
                                  (1)      Failure to pay, when due, the
                 principal, any interest, or any other sum payable hereunder,
                 and continuance of such failure for two (2) business days
                 after written notice of the existence of such default shall
                 have been received by the Maker from the Holder; or

                                  (2)      The occurrence of any event of
                 default under the Loan Agreement.

                 Upon the occurrence of any such uncured Event of Default
hereunder, the entire principal amount hereof, and all accrued and unpaid
interest thereon, and any other amounts due under the Loan Agreement and the
Pledge Agreement shall be accelerated, and shall be immediately due and
payable, at the option of the Holder, without demand or notice, and in addition
thereto, and not in substitution therefor, the Holder shall be entitled to
exercise any one or more of the rights and remedies provided by applicable law,
or as provided in the Loan Agreement.  Failure to exercise said option or to
pursue such other remedies shall not constitute a waiver of such option or such
other remedies or of the right to exercise any of the same in the event of any
subsequent Event of Default hereunder.

                 The Holder may, upon the occurrence of any such Event of
Default hereunder, have resort to the collateral, whether real or personal
property, given as security for this Note in any order, and may sell and
dispose of such collateral in whole or in part, at any time or from time to
time, with no requirement on the part of the Holder of this Note to marshal
assets.  The Holder shall not be required to preserve any rights in such
collateral as against prior parties.  In the event that the Holder is required
to give notice of any intended disposition of collateral held as security for
this Note, fifteen days' notice given by mail or telegraph to the last known
address of the Maker shall be deemed to be reasonable notice.

                 The Maker promises to pay all reasonable costs and expenses
(including without limitation reasonable attorneys' fees and disbursements)
incurred in connection with the collection hereof or in the protection or
realization of any collateral now or hereafter given as security for the
repayment hereof and to perform each and every covenant or agreement to be
performed by the Maker under this Note, the Loan Agreement, any Loan Document
and any other instrument evidencing or securing the obligation represented by
this Note.

                 Any payment on this Note coming due on a Saturday, a Sunday,
or a day which is a legal holiday in the place at which a payment is to be made
hereunder shall be made on the next succeeding day which is a business day in
such place, and any such extension of the time of payment shall be included in
the computation of interest hereunder.

                 Each Obligor (which term shall include the Maker and all
makers, sureties, guarantors, endorsers, and other persons assuming obligations
pursuant to this Note) under this Note hereby waives presentment, protest,
demand, notice of dishonor, and all other notices, and all defenses and pleas
on the grounds of any extension or extensions of the time of payments or the
due dates of this Note, in whole or in part, before or after maturity, with or
without notice.  No renewal or extension of this Note, no release or surrender
of any collateral given as security for this Note, no release of any Obligor,
and no delay in enforcement of this Note or in exercising any right or power
hereunder, shall affect the liability of any Obligor.  The pleading of any
statute of limitations as a defense to any demand against any Obligor is
expressly waived.

                 No single or partial exercise by the Holder of any right
hereunder, under the Loan





                                      A-2

<PAGE>   25




Agreement, under any Loan Document or under any other agreement given as
security for this Note or pertaining hereto, shall preclude any other or
further exercise thereof or the exercise of any other rights.  No delay or
omission on the part of the Holder in exercising any right hereunder shall
operate as a waiver of such right or of any other right under this Note.

                 Whenever used herein, the words "Maker" and "Holder" and
"Obligor" shall be deemed to include their respective successors and assigns.

                 This Note shall be governed by and construed under and in
accordance with the laws of Pennsylvania.

                 IN WITNESS WHEREOF, the undersigned have duly executed this
Note, or have caused this Note to be duly executed on their behalf, as of the
day and year first hereinabove set forth.

                                               GUILFORD PHARMACEUTICALS INC.: 
                                                                              
                                                                              
                                                                              
Attest:                                                                       
                                                                              
                                                                              
                                               By                             
- --------------------------                         -------------------------- 
                                                                              
                                                                              
                                                                              
- --------------------------                         -------------------------- 
      [Title]                                                [Title]          
                                                                              
                                                                              
                                                                              
                                                                              
                                                                              
                                               RHONE-POULENC RORER INC.:      
                                                                              
                                                                              
                                                                              
Attest:                                                                       
                                                                              
                                                                              
                                               By                             
- --------------------------                         -------------------------- 
                                                                              
                                                                              
                                                                              
- --------------------------                         -------------------------- 
      [Title]                                               [Title]            
                                                                              



                                      A-3

<PAGE>   26


                                                                     EXHIBIT A-2


                                      NOTE


$3,500,000                                                        ________, 199_


                 FOR VALUE RECEIVED, Guilford Pharmaceuticals Inc., a Delaware
corporation, (the "Maker"), promises to pay to the order of  Rhone-Poulenc
Rorer Inc. (the "Holder"), the principal amount of THREE MILLION FIVE HUNDRED
THOUSAND DOLLARS ($3,500,000) together with interest on the unpaid principal
amount hereof from the date hereof, until paid in full, said interest to be due
and payable on a quarterly basis at a rate per annum (computed on the basis of
a 360 day year and applied to the actual number of days elapsed in each
interest calculation period) equal to the Holder's Cost of Funds, as defined in
the Loan Agreement, dated as of June 13, 1996 between the Maker and the Holder
(the "Loan Agreement"), with the entire remaining unpaid principal amount
(together with accrued interest thereon) to be due and payable in a single
payment on the fifth anniversary date of the date hereof.  All payments
hereunder shall be made in lawful money of the United States of America,
without offset, provided, however, that, as provided in the Loan Agreement, the
Maker shall be entitled to offset against any amount due hereunder any
undisputed payment then due by the Holder or RPR Pharmaceuticals (a) to the
Maker under the Supply Agreement or (b) to GPI Holdings under the Marketing
Rights Agreement, each as defined in the Loan Agreement.

                 The unpaid principal amount of this Note may be prepaid in
whole or in part at any time or times without premium or penalty in accordance
with the terms of the Loan Agreement.  Each prepayment shall be applied first
to the payment of all interest and other amounts accrued hereunder on the date
of any such prepayment, and the balance of any such prepayment shall be applied
to the principal amount hereof.  No prepayment shall entitle any person to be
subrogated to the rights of the Holder unless and until this Note has been paid
in full.

                 This Note evidences a loan advanced by the Holder for the
benefit of the Maker as a borrower under the Loan Agreement and is secured by
(i) a Second Mortgage (the "Second Mortgage"), of even date herewith, made and
executed by the Maker for the benefit of the Holder, and (ii) a Pledge
Agreement (the "Pledge Agreement"), of even date herewith, made and executed by
the Holder and the Maker for the benefit of the Holder. Neither the reference
to the Loan Agreement or to the Second Mortgage or the Pledge Agreement nor any
provision thereof shall affect or impair the absolute and unconditional
obligation of the Maker to pay the principal amount hereof, together with
interest accrued thereon, when due.

                 This Note shall evidence, and the Second Mortgage and the
Pledge Agreement shall secure, the indebtedness described herein and any future
loans or advances or payments that may be made to or on behalf of the Maker by
the Holder at any time or times hereafter under the Loan Agreement, and any
such loans or advances or payments shall be added to and shall bear interest at
the same rate as the principal indebtedness hereunder.

                 The occurrence of any one or more of the following shall
constitute an event of default ("Event of Default") hereunder:


                                     A-1

<PAGE>   27
                                  (1)      Failure to pay, when due, the
                 principal, any interest, or any other sum payable hereunder,
                 and continuance of such failure for two (2) business days
                 after written notice of the existence of such default shall
                 have been received by the Maker from the Holder; or

                                  (2)      The occurrence of any event of
                 default under the Loan Agreement.

                 Upon the occurrence of any such uncured Event of Default
hereunder, the entire principal amount hereof, and all accrued and unpaid
interest thereon, and any other amounts due under the Loan Agreement and the
Pledge Agreement shall be accelerated, and shall be immediately due and
payable, at the option of the Holder, without demand or notice, and in addition
thereto, and not in substitution therefor, the Holder shall be entitled to
exercise any one or more of the rights and remedies provided by applicable law,
or as provided in the Loan Agreement.  Failure to exercise said option or to
pursue such other remedies shall not constitute a waiver of such option or such
other remedies or of the right to exercise any of the same in the event of any
subsequent Event of Default hereunder.

                 The Holder may, upon the occurrence of any such Event of
Default hereunder, have resort to the collateral, whether real or personal
property, given as security for this Note in any order, and may sell and
dispose of such collateral in whole or in part, at any time or from time to
time, with no requirement on the part of the Holder of this Note to marshal
assets.  The Holder shall not be required to preserve any rights in such
collateral as against prior parties.  In the event that the Holder is required
to give notice of any intended disposition of collateral held as security for
this Note, fifteen days' notice given by mail or telegraph to the last known
address of the Maker shall be deemed to be reasonable notice.

                 The Maker promises to pay all reasonable costs and expenses
(including without limitation reasonable attorneys' fees and disbursements)
incurred in connection with the collection hereof or in the protection or
realization of any collateral now or hereafter given as security for the
repayment hereof and to perform each and every covenant or agreement to be
performed by the Maker under this Note, the Loan Agreement, any Loan Document
and any other instrument evidencing or securing the obligation represented by
this Note.

                 Any payment on this Note coming due on a Saturday, a Sunday,
or a day which is a legal holiday in the place at which a payment is to be made
hereunder shall be made on the next succeeding day which is a business day in
such place, and any such extension of the time of payment shall be included in
the computation of interest hereunder.

                 Each Obligor (which term shall include the Maker and all
makers, sureties, guarantors, endorsers, and other persons assuming obligations
pursuant to this Note) under this Note hereby waives presentment, protest,
demand, notice of dishonor, and all other notices, and all defenses and pleas
on the grounds of any extension or extensions of the time of payments or the
due dates of this Note, in whole or in part, before or after maturity, with or
without notice.  No renewal or extension of this Note, no release or surrender
of any collateral given as security for this Note, no release of any Obligor,
and no delay in enforcement of this Note or in exercising any right or power
hereunder, shall affect the liability of any Obligor.  The pleading of any
statute of limitations as a defense to any demand against any Obligor is
expressly waived.

                 No single or partial exercise by the Holder of any right
hereunder, under the Loan





                                      A-2

<PAGE>   28




Agreement, under any Loan Document or under any other agreement given as
security for this Note or pertaining hereto, shall preclude any other or
further exercise thereof or the exercise of any other rights.  No delay or
omission on the part of the Holder in exercising any right hereunder shall
operate as a waiver of such right or of any other right under this Note.

                 Whenever used herein, the words "Maker" and "Holder" and
"Obligor" shall be deemed to include their respective successors and assigns.

                 This Note shall be governed by and construed under and in
accordance with the laws of Pennsylvania.





                                      A-3

<PAGE>   29




                 IN WITNESS WHEREOF, the undersigned have duly executed this
Note, or have caused this Note to be duly executed on their behalf, as of the
day and year first hereinabove set forth.

                                               GUILFORD PHARMACEUTICALS INC.:
                                                                             
                                                                             
                                                                             
Attest:                                                                      
                                                                             
                                                                             
                                               By                            
- --------------------------                         --------------------------
                                                                             
                                                                             
                                                                             
- --------------------------                         --------------------------
      [Title]                                                [Title]         
                                                                             
                                                                             
                                                                             
                                                                             
                                                                             
                                               RHONE-POULENC RORER INC.:     
                                                                             
                                                                             
                                                                             
Attest:                                                                      
                                                                             
                                                                             
                                               By                            
- --------------------------                         --------------------------
                                                                             
                                                                             
                                                                             
- --------------------------                         --------------------------
      [Title]                                               [Title]          
                                                                             



                                      A-4

<PAGE>   30

                                                                       EXHIBIT B





                         PLEDGE AND SECURITY AGREEMENT


                 THIS PLEDGE AND SECURITY AGREEMENT ("Agreement") is entered
into as of ______, 199_ between Guilford Pharmaceuticals Inc. ("Pledgor") and
Rhone-Poulenc Rorer Inc. ("Secured Party").

                 WHEREAS, Pledgor and Secured Party have entered into a Loan
Agreement, dated as of June 13, 1996, which, among other things, provides for
the extension of a line of credit by the Secured Party to Pledgor for
$7,500,000 (the "Loan Agreement"; capitalized terms used herein without
definition shall have the meanings assigned to such terms in the Loan
Agreement); and

                 WHEREAS, Pledgor has agreed, pursuant to the Loan Agreement,
to grant Secured Party, among other things, a first priority lien on equipment
purchased with the proceeds pursuant to the Loan Agreement and such other
security as the parties may agree; and

                 WHEREAS, as a condition to the obligation of Secured Party to
extend a line of credit to Pledgor, Pledgor is required to execute and deliver
this Pledge Agreement and to pledge hereunder the Pledged Interest (as
hereinafter defined); and

                 NOW, THEREFORE, in consideration of the foregoing and of the
mutual covenants and agreements hereinafter set forth, the parties hereto agree
as follows:

1.      DEFINITIONS
 
                 For the purposes of this Agreement:

                 (a)      An "Event of Default" means any violation of
the obligations or breach by Pledgor of the representations and warranties set
forth in this Agreement, which violation of obligations continues unremedied
for a period of thirty (30) days after Secured Party gives written notice
thereof to Pledgor; it being understood and agreed that Pledgor shall not be
entitled to a thirty (30) day period within which to remedy a breach of a
representation or warranty.

                 (b)      "Pledged Interest" means the Equipment (as
defined in the Loan Agreement), all proceeds thereof, and such other security
as the parties may agree.

2.      PLEDGE OF PLEDGED INTEREST

                 (a)      As security for the due and punctual payment
and performance by Pledgor of all of its obligations under the Notes issued
pursuant to the Loan Agreement (the "Notes"),

<PAGE>   31
under this Agreement, under any Loan Document and under any other related
agreement to which Pledgor is a party (the "Secured Obligations") Pledgor
hereby grants, transfers, sets over, pledges and assigns to Secured Party a
first priority lien and security interest in the Pledged Interest and the
proceeds thereof.

                 (b)      It is expressly agreed by Pledgor that,
anything herein to the contrary notwithstanding, Pledgor shall remain liable
under each contract or other agreement to observe and perform all the
conditions and obligations to be observed and performed by it thereunder, all
in accordance with and pursuant to the terms and provisions thereof.  Secured
Party shall not have any obligation or liability thereunder by reason of or
arising out of this Agreement or the assignment of such contract or other
agreement to Secured Party or the receipt by Secured Party of any payment
relating thereto pursuant hereto, nor shall Secured Party be required or
obligated in any manner to perform or fulfill any of the obligations of Pledgor
thereunder or pursuant thereto, or to make any payment, or to make any inquiry
as to the nature or the sufficiency of any payment received by it or the
sufficiency of any performance by any party thereunder, or to present or file
any claim, or to take any action to collect or enforce any performance or the
payment of any amounts which may have been assigned to it or to which it may be
entitled at any time or times.

                 (c)      If Pledgor fails to perform or comply with
any of its agreements contained herein or in any Loan Document and Secured
Party, as provided for by the terms of this Agreement, shall itself perform or
comply, or otherwise cause performance or compliance, with such agreements, the
reasonable expenses of Secured Party incurred in connection with such
performance or compliance (including, without limitation, reasonable attorneys'
fees and expenses), together with interest thereon at the rate provided for in
respect of the Notes, shall be payable by Pledgor to Secured Party on demand
and shall constitute obligations secured hereby.

3.      FINANCING STATEMENTS

                 (a)      At the request of Secured Party, Pledgor will
promptly join with Secured Party in executing financing statements,
continuation statements, certificates and other documents with respect to the
Pledged Interest pursuant to the Uniform Commercial Code as in effect from time
to time in the state of Maryland (the "UCC") and otherwise as may be necessary
in the Secured Party's sole discretion to enable Secured Party to perfect or
from time to time renew the security interests granted hereby, including,
without limitation, such financing statements, continuation statements,
certificates and other documents as may be necessary to perfect a security
interest in any additional property or rights hereafter acquired by the Pledgor
or in any replacements or proceeds thereof, in form satisfactory to Secured
Party, and Pledgor will pay the cost of filing the same in all public offices
wherever Secured Party deems filing to be necessary or desirable.  Without
limiting the foregoing, it is understood and agreed that, if requested by
Secured Party, Pledgor shall execute financing statements from time to time
that specifically identify and describe the Equipment that is purchased from
time to time with the proceeds of the Loan.

                 (b)      Pledgor hereby irrevocably constitutes and
appoints Secured Party and any officer or agent thereof, with full power of
substitution, as its true and lawful attorney-in-fact





                                      -2-

<PAGE>   32
with full irrevocable power and authority in the place and stead of Pledgor and
in the name of Pledgor or in its own name, from time to time in Secured Party's
discretion, for the purpose of filing financing statements and making other
similar filings, and to take any and all appropriate actions in connection with
such filings.

                 Pledgor hereby ratifies all that said attorney-in-fact shall
lawfully do or cause to be done by virtue hereof.  This power of attorney is a
power coupled with an interest and shall be irrevocable.

                 (c)      The powers conferred on Secured Party hereunder are 
solely to protect its interests in the collateral and Secured Party shall not 
be under any duty to exercise any such powers.  Secured Party shall be 
accountable only for amounts that it actually receives as a result of the 
exercise of such powers and neither it nor any of its officers, directors,
employees or agents shall be responsible to Pledgor for any act or failure to
act, except for its own gross negligence or willful misconduct.

4.      REMEDIES ON DEFAULT

                 (a)      If at any time an Event of Default shall have
occurred and be continuing, then, in addition to having the right to exercise
any right or remedy of a secured party upon default under the UCC, Secured
Party may, to the extent permitted by law, without being required to give any
notice to Pledgor except as provided below:

                                (i)     Apply any cash held by it hereunder in 
                          the manner provided in Section 4(c) below; and
                          
                                (ii)    If there shall be no such cash or if 
                          the cash so applied shall be insufficient to
                          pay in full all such obligations, collect, receive,
                          appropriate and realize upon the Pledged Interest or
                          any part thereof, and sell, assign, contract to sell
                          or otherwise dispose of and deliver the Pledged
                          Interest or any part thereof, in one or more
                          portions, at public or private sale, for cash, upon
                          credit or for future delivery, and at such price or
                          prices as Secured Party may deem best, and Secured
                          Party may (except as otherwise provided by law) be
                          the purchaser of any or all of the Pledged Interest
                          so sold and thereafter may hold the same, absolutely,
                          free from any right or claim of whatsoever kind.
                          
                 In the event of a sale as aforesaid, Secured Party is
authorized, at any such sale, if it deems it advisable so to do, to restrict
the number of prospective bidders or purchasers.  Upon any such sale Secured
Party shall have the right to deliver, assign and transfer to the purchaser
thereof the Pledged Interest so sold.

                 Each purchaser at any such sale shall hold the property sold,
absolutely, free from any claim or right of whatsoever kind.  Secured Party
shall give Pledgor not less than fifteen (15) days' written notice of its
intention to make any such public or private sale.  Such notice, in case of
public sale, shall state the time and place fixed for such sale.





                                      -3-

<PAGE>   33
                 Any such public sale shall be held at such time or times
within the ordinary business hours and at such place or places as Secured Party
may fix in the notice of such sale.  Secured Party shall not be obligated to
make any sale pursuant to any such notice.  Secured Party may, without notice
or publication, adjourn any sale or cause the same to be adjourned from time to
time by announcement at the time and place fixed for the sale, and such sale
may be made at any time or place to which the same may be so adjourned.  In
case of any sale of all or any part of the Pledged Interest on credit or for
future delivery, the Pledged Interest so sold may be retained by Secured Party
until the selling price is paid by the purchaser thereof, but Secured Party
shall not incur any liability in case of the failure of such purchaser to take
up and pay for the Pledged Interest so sold and, in case of any such failure,
such Pledged Interest may again be sold upon like notice.

                 Secured Party, instead of exercising the power of sale herein
conferred upon it, may proceed by a suit or suits at law or in equity to
foreclose this Agreement and sell the Pledged Interest, or any portion thereof,
under a judgment or decree of a court or courts of competent jurisdiction.

                 On any sale of the Pledged Interest, Secured Party is hereby
authorized to comply with any limitation or restriction in connection with such
sale that it may be advised by counsel is necessary in order to avoid any
violation of applicable law or in order to obtain any required approval of the
purchaser or purchasers by any governmental regulatory authority or officer or
court.

                 Compliance with the foregoing procedures shall result in such
sale or disposition being considered or deemed to have been made in a
commercially reasonable manner.

                 (b)      Each of the rights, powers, and remedies
provided herein, or in any other related agreement or now or hereafter existing
at law or in equity or by statute or otherwise shall be cumulative and
concurrent and shall be in addition to every other right, power or remedy
provided for in this Agreement, in any Loan Document in any other related
agreement, or now or hereafter existing at law or in equity or by statute or
otherwise.  The exercise of any such right, power or remedy shall not preclude
the simultaneous or later exercise of any or all other such rights, powers or
remedies.

                 (c)      The proceeds of any collection, recovery,
receipt, appropriation, realization or sale as aforesaid shall be applied as
follows:

                          (1)      First, to the payment of all costs
                 and expenses of every kind incurred by Secured Party in
                 connection therewith, including, without limitation,
                 reasonable attorneys' fees and expenses;

                          (2)      Second, to the payment to Secured
                 Party in satisfaction of the obligations of the Notes or any
                 other Secured Obligations or, in the case of an Event of
                 Default involving only the breach of a representation,
                 warranty or covenant by Pledgor under this Agreement or under
                 any other related agreement rather than a failure by Pledgor
                 to perform one or more of its obligations under the Notes, to
                 Secured Party, in satisfaction of such representation,
                 warranty or





                                      -4-

<PAGE>   34
                 covenant; or, in the case of an Event of Default involving the
                 breach or any such representation, warranty or covenant and a
                 failure by Pledgor to perform one or more of its obligations
                 under the Notes, to satisfy all such representations,
                 warranties, covenants and obligations;

                          (3)      Third, to the payment of any other amounts 
                 required by applicable law; and

                          (4)      Fourth, to the payment of any surplus then 
                 remaining from such proceeds to Pledgor, unless otherwise 
                 required by law or directed by a court of competent 
                 jurisdiction; provided that Pledgor shall not be liable for
                 any deficiency if such proceeds are insufficient to satisfy
                 all representations, warranties, covenants and obligations
                 under the Notes, under this Agreement and under any other
                 related agreement.

5.      REPRESENTATIONS, WARRANTIES AND COVENANTS OF PLEDGOR

                 (a)      Representations and Warranties.  Pledgor
represents, warrants and covenants that:

                                  (i)     Pledgor has all requisite
                          capacity, power and authority, being under no
                          legal restriction, limitation or disability, to enter
                          into this Agreement, to pledge the Pledged Interest
                          for the purposes described herein, and to carry out
                          the transactions contemplated by this Agreement. 
                          This Agreement constitutes a legal, valid, and
                          binding obligation of Pledgor, enforceable in
                          accordance with its terms.

                                  (ii)    Pledgor has good, valid and
                          marketable title to the Pledged Interest, free
                          and clear of all Liens other than Liens created by
                          this Agreement.

                                  (iii)   The Pledged Interest is duly
                          and validly pledged to Secured Party in
                          accordance with law and Secured Party has a good,
                          valid, and perfected first priority lien on and
                          security interest in the Pledged Interest and the
                          proceeds thereof.

                                  (iv)    The execution, delivery and
                          performance by Pledgor of this Agreement does
                          not and will not result in any violation of any
                          agreement, indenture or other instrument, license,
                          judgment, decree, order, law, statute, ordinance or
                          other governmental rule or regulation applicable to
                          Pledgor.

                                  (v)     No approval, consent or other action 
                          by Pledgor, by any governmental authority, or
                          by any other person or entity is or will be necessary
                          to permit the valid execution, delivery or
                          performance of this Agreement by Pledgor.





                                      -5-

<PAGE>   35
                                  (vi)    There is no claim, litigation,
                          proceeding or investigation pending, threatened or
                          reasonably anticipated against or affecting Pledgor,
                          this Agreement, or the transactions contemplated
                          hereby, before or by any court, arbitrator or
                          governmental authority which might adversely affect
                          Pledgor's ability to perform Pledgor's obligations
                          under this Agreement.

                 (b)              Covenants.  Until all Secured Obligations
have been paid and performed in full or until all of the Pledged Interest is
returned to Pledgor pursuant to Section 6 hereof, whichever is earlier, Pledgor
hereby covenants that, unless Secured Party otherwise consents in advance in
writing:

                                  (i)     Preservation of Pledge. Pledgor shall
                          execute, deliver, and file any and all financing
                          statements, continuation statements, stock powers,
                          instruments, and other documents, necessary in the
                          sole discretion of Secured Party to create, perfect,
                          preserve, validate or otherwise protect the pledge of
                          the Pledged Interest to Secured Party and Secured
                          Party's lien on and security interest in the Pledged
                          Interest and the first priority thereof; maintain, or
                          cause to be maintained, at all times, the pledge of
                          the Pledged Interest to Secured Party and Secured
                          Party's lien on and security interest in the Pledged
                          Interest and the first priority thereof; and defend
                          the Pledged Interest and Secured Party's interests
                          therein against all claims and demands of all persons
                          asserting such claims or demands by or through
                          Pledgor at any time claiming the same or any interest
                          therein adverse to Secured Party and pay all costs
                          and expenses (including, without limitation,
                          attorneys' fees and expenses) in connection with such
                          defense.

                                  (ii)    Transfer of Pledged Interest. Pledgor
                          shall not sell, transfer, pledge, assign or otherwise
                          dispose of the Pledged Interest or any interest
                          therein, and Pledgor shall not create, incur, assume
                          or suffer to exist any Lien with respect to any of
                          the Pledged Interest or any interest therein.

                                  (iii)   Other Actions.  Pledgor shall not take
                          or permit to be taken any action in connection with
                          the Pledged Interest or otherwise which would impair
                          the value of the interests or rights of Pledgor
                          therein or which would impair the interests or rights
                          of Secured Party therein or with respect thereto.

                                  (iv)    Location of Pledged Interest. Pledgor
                          shall keep and maintain all Equipment at the
                          locations identified on Schedule 1 attached hereto
                          and made a part hereof and shall not change the
                          location of any Equipment without the prior written
                          consent of the Secured Party.

                                  (v)     Notice of Purchase of Equipment.  From
                          the date of the Initial Installment until one month
                          after all of the proceeds of the Loan advanced in the
                          Initial Installment have been expended, Pledgor shall





                                      -6-

<PAGE>   36

                          provide Secured Party with written notice each
                          month of all items of Equipment that Pledgor has
                          purchased with the proceeds of the Loan and shall
                          promptly provide such additional descriptive
                          information regarding the Equipment as Secured Party
                          shall request.

6.      RELEASE OF PLEDGED INTEREST

                 So long as no Event of Default has occurred, when the Notes
have been paid in full and all other Secured Obligations have been paid or
performed in full, this Agreement shall terminate and the Pledged Interest held
by Secured Party shall promptly be returned to Pledgor at the address of
Pledgor set forth in Section 13 hereof.

7.      ADDITIONAL ACTIONS AND DOCUMENTS

                 Pledgor hereby agrees to take or cause to be taken such
further actions, to execute, deliver and file or cause to be executed,
delivered and filed such further documents and instruments, and to obtain such
consents, as may be necessary or as may be desirable in order to fully
effectuate the purposes, terms and conditions of this Agreement, whether
before, at or after the occurrence of an Event of Default.

8.      EXPENSES OF SECURED PARTY

                 Pledgor agrees to reimburse Secured Party for, and save
Secured Party harmless against liability for the payment of, all out-of-pocket
expenses arising in connection with the enforcement of, or for the preservation
or exercise of any rights (including the right to realize upon the Pledged
Interest) under, this Agreement, including, without limitation, the reasonable
fees and expenses of counsel to Secured Party arising in such connection.

9.      ENTIRE AGREEMENT; AMENDMENT

                 This Agreement constitutes the entire agreement among the
parties hereto with respect to the transactions contemplated herein, and it
supersedes all prior oral or written agreements, commitments or understandings
with respect to the matters provided for herein.  No amendment, modification or
discharge of this Agreement shall be valid or binding unless set forth in
writing and duly executed and delivered by the party against whom enforcement
of the amendment, modification, or discharge is sought.

10.     WAIVER

                 No waiver by Secured Party of or consent by Secured Party to a
variation from any provision of this Agreement shall be effective unless made
in a written instrument duly executed on behalf of Secured Party by its duly
authorized officer.  No such waiver shall be considered a waiver of any rights
of Secured Party with respect to the particular obligations of





                                      -7-

<PAGE>   37
Pledgor or with respect to the conditions to the obligations of Secured Party
beyond the rights or conditions as expressly waived, or a waiver in any respect
with regard to any other rights of Secured Party with respect to any
obligations of Pledgor.  No delay or failure on the part of Secured Party in
exercising any right, power or privilege under this Agreement shall impair any
such right, power or privilege or be construed as a waiver of any default or
any acquiescence therein.  No single or partial exercise of any such right,
power or privilege shall preclude the further exercise of such right, power or
privilege, or the exercise of any other right, power or privilege.  No other
actions taken by Secured Party, including, without limitation, any
investigation by or on behalf of Secured Party, and no failure to take action,
shall be deemed to constitute a waiver or an extension by Secured Party of
compliance with any representation, warranty, condition, agreement or
indemnification set forth in this Agreement.

11.     SEVERABILITY

                 If any part of any provision of this Agreement shall be
invalid or unenforceable in any respect, such part shall be ineffective to the
extent of such invalidity or unenforceability only, without in any way
affecting the remaining parts of such provision or the remaining provisions of
this Agreement.

12.     GOVERNING LAW

                 This Agreement, the rights and obligations of the parties
hereto, and any claims or disputes relating thereto, shall be governed by and
construed in accordance with the laws of the state of Maryland.

13.     NOTICES

                 All notices, demands, requests, or other communications which
may be or are required to be given, served, or sent by any party to any other
party pursuant to this Agreement shall be in writing and shall be mailed by
first-class, registered or certified mail, return receipt requested, postage
prepaid, or transmitted by hand delivery (including delivery by courier),
telegram, telex, or facsimile transmission, addressed as follows:

                 (i)      If to Pledgor:
                     
                          Guilford Pharmaceuticals Inc.
                          6611 Tributary Street
                          Baltimore, Maryland  21224
                          Attention:  Thomas C. Seoh
                          Vice President, General Counsel and
                            Secretary
                          Telephone:  (410) 631-6441
                          Facsimile:  (410) 631-6450
                     




                                      -8-

<PAGE>   38
                 (ii)     If to Secured Party:
                     
                          Rhone-Poulenc Rorer Inc.
                          500 Arcola Road
                          Collegeville, Pennsylvania  19426
                          Attention: General Counsel
                          Telephone:  (610) 454-8000
                          Facsimile:  (610) 454-3807

                 Each party may designate by notice in writing a new address to
which any notice, demand, request or communication may thereafter be so given,
served or sent.  Each notice, demand, request, or communication which shall be
mailed, delivered or transmitted in the manner described above shall be deemed
sufficiently given, served, sent and received for all purposes at such time as
it is delivered to the addressee (with the return receipt, the delivery
receipt, the affidavit of messenger or (with respect to a telex) the answerback
being deemed conclusive (but not exclusive) evidence of such delivery) or at
such time as delivery is refused by the addressee upon presentation.


14.     HEADINGS

                 Section headings contained in this Agreement are inserted for
convenience of reference only, shall not be deemed to be a part of this
Agreement for any purpose, and shall not in any way define or affect the
meaning, construction or scope of any of the provisions hereof.

15.     EXECUTION IN COUNTERPARTS

                 To facilitate execution, this Agreement may be executed in as
many counterparts as may be required.  It shall not be necessary that the
signatures of, or on behalf of, each party, or that the signatures of all
persons required to bind any party, appear on each counterpart; but it shall be
sufficient that the signature of, or on behalf of, each party, or that the
signatures of the persons required to bind any party, appear on one or more of
the counterparts.  All counterparts shall collectively constitute a single
agreement.  It shall not be necessary in making proof of this Agreement to
produce or account for more than a number of counterparts containing the
respective signatures of, or on behalf of, all of the parties hereto.

16.     SECURED PARTY'S RIGHTS CUMULATIVE

                 The rights and remedies of, or for the benefit of, Secured
Party described herein, in any other related agreement or now or hereafter
existing at law or in equity or by statute or otherwise shall be cumulative and
concurrent and shall be in addition to every other right, power or remedy
provided for in this Agreement.  The exercise of any such right, power or
remedy shall not preclude the simultaneous or later exercise of any or all
other such rights, powers or remedies.  No notice to or demand on Pledgor in
any case shall entitle Pledgor to any other notice or demand in similar or
other circumstances.





                                      -9-

<PAGE>   39





17.     BINDING EFFECT

                 Subject to any provisions hereof restricting assignment, this
Agreement shall be binding upon and shall inure to the benefit of the parties
hereto and their respective successors, heirs, executors, administrators, legal
representatives and assigns.

18.     ASSIGNMENT

                 This Agreement may not be assigned by Pledgor without the
prior written consent of Secured Party.  [In the event of a sale or assignment
by Secured Party of all or any part of the interests in the Notes, Secured
Party may assign and transfer its rights and interests under this Agreement in
whole or in part to the purchaser or purchasers of such interests in the Notes,
whereupon such purchaser or purchasers shall become vested with all of the
powers and rights given to Secured Party hereunder, and shall be deemed to be a
"Secured Party" for all purposes hereunder, and the predecessor Secured Party
shall thereafter be forever released and fully discharged from any liability or
responsibility hereunder with respect to the rights and interests so assigned.]

                 IN WITNESS WHEREOF, the parties hereto have duly executed this
Agreement, or have caused this Agreement to be duly executed on their behalf,
as of the day and year first above written.

                                               GUILFORD PHARMACEUTICALS INC.: 
                                                                              
                                                                              
                                                                              
Attest:                            
                                                                              
                                                                              
                                               By                             
- ---------------------------                       ---------------------------
                                                                              
- ---------------------------                       --------------------------- 
      [Title]                                                [Title]          
                                                                              
                                                                              
                                                                              
                                                                              
                                                                              
                                               RHONE-POULENC RORER INC.:      
                                                                              
                                                                              
Attest:                                                                       
                                                                              
                                                                              
                                               By                             
- ---------------------------                       --------------------------- 
                                                                              
- ---------------------------                       --------------------------- 
       [Title]                                               [Title]           
                                                                              



                                      -10-

<PAGE>   1
                                                                 EXHIBIT 10.44



AMENDMENT TO 1993 EMPLOYEE SHARE OPTION AND RESTRICTED SHARE PLAN, AS AMENDED




      On May 21, 1996, the stockholders of the Company approved amending the
above-referenced plan to increase the number of shares of common stock, par
value $.01 per share, of the Company available for grant as stock options from
600,000 shares to 1,800,000 shares.  All other terms of the plan remained
unchanged.





<PAGE>   1
                                                                 EXHIBIT 10.45



                AMENDMENT TO THE DIRECTORS' STOCK OPTION PLAN


      On May 21, 1996, the stockholders of the Company approved amending the
above-referenced plan to change the definition of "eligible director" to read
in its entirety as follows: "a member of the Company's Board of Directors who
is not an officer or employee of (i) the Company, (ii) any of its subsidiaries
or (iii) a stockholder who owns twenty percent (20%) or more of the shares of
Stock or of the shares of voting preferred stock of the Company which is
convertible into twenty percent (20%) or more of the shares of Stock of the
Company".  All other terms of the plan remained unchanged.

<PAGE>   1
EXHIBIT 11.1

COMPUTATION OF PER SHARE EARNINGS



<TABLE>
<CAPTION>
                                                               THREE MONTHS ENDED JUNE 30,            SIX MONTHS ENDED JUNE 30,
                                                              1996                  1995                1996                1995
                                                         -------------          -------------      -------------      -------------
<S>                                                        <C>                  <C>                 <C>                <C>
Weighted average common shares outstanding                   9,140,271             3,834,867          8,015,569          3,810,706
                                                                                
Dilutive incremental shares assumed to be outstanding                           
  related to stock options and warrants                      1,096,488                     -                  -                  -

Weighted average common and common                                              
  equivalent shares used in the computation of           -------------          -------------      -------------      -------------
  net income (loss) per share                               10,236,759             3,834,867          8,015,569          3,810,706
                                                         =============          =============      =============      =============
                                                                                
Net Income (loss)                                          $ 2,775,104          $ (2,904,691)       $(1,743,996)       $(5,093,698)
                                                         =============          =============      =============      =============
                                                                                
Net Income (loss) per share                                $      0.27          $      (0.76)       $     (0.22)       $     (1.34)
                                                         =============          =============      =============      =============
</TABLE>                                                   

Notes: (1) Both primary and fully diluted earnings per share are the same for
           the three months ended June 30, 1996.
       (2) For the six months ended June 30, 1996, the computation of both  
           primary and fully diluted earnings per share exclude common stock 
           equivalents since their effect on earnings per share is antidilutive.

<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM FORM 10-Q,
FOR THE QUARTERLY PERIOD ENDED JUNE 30, 1996 AND THE SIX MONTHS ENDED JUNE 30,
1996 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH DOCUMENT (FORM 10-Q)
</LEGEND>
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1996
<PERIOD-START>                             JAN-01-1996
<PERIOD-END>                               JUN-30-1996
<CASH>                                      10,898,687
<SECURITIES>                                         0
<RECEIVABLES>                                        0
<ALLOWANCES>                                         0
<INVENTORY>                                          0
<CURRENT-ASSETS>                            62,796,533
<PP&E>                                      13,067,402
<DEPRECIATION>                               1,100,332
<TOTAL-ASSETS>                              80,164,221
<CURRENT-LIABILITIES>                        4,884,162
<BONDS>                                      8,236,241
                                0
                                          0
<COMMON>                                        93,016
<OTHER-SE>                                  67,043,818
<TOTAL-LIABILITY-AND-EQUITY>                80,164,221
<SALES>                                              0
<TOTAL-REVENUES>                             7,618,701
<CGS>                                                0
<TOTAL-COSTS>                               10,329,808
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                             187,424
<INCOME-PRETAX>                            (1,743,996)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                        (1,743,996)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                               (1,743,996)
<EPS-PRIMARY>                                    (.22)
<EPS-DILUTED>                                    (.22)
        

</TABLE>


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