Document:

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                                                               Exhibit 10(r)

                                                              EXECUTION COPY

                                 AMENDMENT NO. 2

                  AMENDMENT NO. 2 (this "Amendment No. 2") dated as of December
                                         ---------------
24, 2002 between:

                  SOLUTIA INC., a Delaware corporation (the "Company"); and
                                                             -------

                  CITIBANK, N.A., as administrative agent for the Lenders (in
         such capacity, together with its successors in such capacity, the
         "Administrative Agent").
          --------------------

                  The Company, certain lenders (the "Lenders"), Bank of America,
                                                     -------
N.A., as syndication agent (the "Syndication Agent"), and the Administrative
                                 -----------------
Agent are parties to a Second Amended and Restated Credit Agreement dated as of
July 25, 2002 (as heretofore amended, the "Credit Agreement"). The parties
                                           ----------------
hereto desire to amend the Credit Agreement in certain respects and, in that
connection, the Administrative Agent has been granted authority by the Majority
Lenders (as defined in the Credit Agreement) to execute and deliver this
Amendment No. 2. Accordingly, the Company, and the Administrative Agent on
behalf of the Majority Lenders, hereto hereby agree as follows:

                  Section 1. Definitions. Except as otherwise defined in this
                             -----------
Amendment No. 2, terms defined in the Credit Agreement are used herein as
defined therein.

                  Section 2. Amendment. Subject to the conditions specified in
                             ---------
Section 6 hereof, but effective as of the date hereof:

                  2.01. Certain Defined Terms. Section 1.01 of the Credit
                        ---------------------
Agreement is amended by adding the following definitions in the appropriate
alphabetic locations (in the case of any new definition) and amending in their
entirety the following definitions (to the extent already included in Section
1.01 of the Credit Agreement):

                  "Adjusted EBITDA" means, for any period, the sum, for the
                   ---------------
         Company and its Consolidated Subsidiaries (determined on a Consolidated
         basis without duplication in accordance with GAAP), of the following:
         (a) net income (calculated before taxes, Interest Expense,
         extraordinary and unusual items and income or loss attributable to
         equity in Affiliates (other than Affiliates that are Consolidated
         Subsidiaries and, for any portion of such period ending on or before
         September 30, 2002, Specified Joint Ventures)) for such period plus (b)
         with respect to any Specified Joint Venture for any portion of such
         period ending after September 30, 2002, the aggregate amount of
         dividends paid by such Specified Joint Venture during such period to
         the Company and its Consolidated Subsidiaries (net of Investments made
         by the Company and its Consolidated Subsidiaries in such Specified
         Joint Venture during such period), excluding any portion thereof that
         shall exceed the net income of such Specified Joint Venture for such
         period) plus (c) depreciation and amortization (to the extent deducted
         in determining

                                 Amendment No. 2

<PAGE>
<PAGE>
                                      -2-

         net income) for such period plus (d) impairments of goodwill (to the
         extent deducted in determining net income) for such period; provided
         that:

                           (1) charges taken and reserves established by the
                  Company, its Consolidated Subsidiaries and Specified Joint
                  Ventures in connection with (a) restructuring of existing
                  operations, (b) maintenance of reserves for self-insurance and
                  environmental remediation (except as provided in clause (4) of
                  Part B of Schedule 2) and (c) asset impairments (all on or
                  before December 31, 2001), in each case in the respective
                  amounts and categories set forth on Part A of Schedule 2
                  hereto shall be added back to net income for such period (to
                  the extent such charges and reserves were deducted in
                  determining net income for such period);

                           (2) gains or losses in connection with the sales of
                  the Astaris LLC joint venture and the Flexsys L. P. joint
                  venture shall be deducted from or added back to net income for
                  such period (to the extent such gains or losses were added or
                  deducted in determining net income for such period);

                           (3) losses in connection with the anticipated
                  pay-down of the Company's obligations under the Co-gen
                  Participation Agreement and the Co-gen Lease shall be added
                  back to net income for such period (to the extent such losses
                  were deducted in determining net income for such period); and

                           (4) the cash charges, other charges and reserves
                  referred to in Part B of Schedule 2 hereto shall be added back
                  to net income for such period (to the extent such charges and
                  reserves were deducted in determining net income for such
                  period) all to the extent specified in Part B of said Schedule
                  2.

                  "Applicable Date" means the earlier of (a) March 31, 2003 or
                   ---------------
         (b) the date of consummation of the UCB Asset Sale.

                  "Capital Expenditures" means, for any period, expenditures
                   --------------------
         (including the aggregate amount of Capitalized Lease Obligations
         incurred during such period) made by the Company or any of its
         Subsidiaries to acquire or construct fixed assets, plant and equipment
         (including renewals, improvements and replacements, but excluding
         normal replacements and maintenance which are properly charged to
         current operations) during such period computed in accordance with
         GAAP. For the purposes hereof, (i) the acquisition of any capital asset
         by the Company or any of its Subsidiaries constituting a reinvestment
         of proceeds of any casualty event or condemnation, shall constitute a
         "Capital Expenditure" hereunder only to the extent of any consideration
         paid by the Company and its Subsidiaries in excess of such proceeds so
         reinvested, (ii) obligations of the Company payable after December 31,
         2002 and arising in connection with the settlement of any liability of
         the Company under Fluor Daniel Corporation v. Solutia Inc., filed on
         February 8, 2001, in the United States District Court for the Southern
         District of Texas, shall be treated as "Capital Expenditures" in any
         period only to the extent payments are made by the Company during such
         period and (iii) payments by the Company of principal in respect of the
         Co-gen Instruments shall not constitute "Capital Expenditures"
         hereunder.

                                 Amendment No. 2

<PAGE>
<PAGE>
                                      -3-

                  "UCB Asset Sale" means the sale of (i) capital stock and
                   --------------
         comparable ownership interests and (ii) other assets of the Company and
         its Subsidiaries as contemplated by the UCB Stock and Asset Purchase
         Agreement.

                  "UCB Stock and Asset Purchase Agreement" means the Stock and
                   --------------------------------------
         Asset Purchase Agreement dated as of December 2, 2002 by and between
         UCB, S.A., as "Purchaser" and the Company, as "Seller", as originally
         in effect and without giving effect to any modification after the date
         of Amendment No. 2 hereto (other than non-material modifications that
         do not expand in any material respect the scope of the assets being
         sold, or reduce in any material respect the type and amount of
         consideration to be received pursuant thereto).

                  2.02. Foreign Intellectual Property. Section 6.01(p) of the
                        -----------------------------
Credit Agreement is hereby amended to read in its entirety as follows:

                  "(p) Foreign Intellectual Property Security Documents. The
                       ------------------------------------------------
         Company will take, and cause CPFilms Inc. and Solutia Germany to take,
         such action to deliver the documents, agreements and other instruments
         contemplated in the definition of the term "Intellectual Property
         Security Documents" in Section 1.01, covering the intellectual property
         listed on Schedule 6 hereto filed or registered in Europe, each of
         which shall have been executed (and, where appropriate, acknowledged)
         by Persons satisfactory to the Administrative Agent and, to the extent
         requested by the Administrative Agent, accompanied by one or more
         opinions of local counsel covering such matters, as the Administrative
         Agent may reasonably request (and the Company hereby instructs such
         counsel to deliver such opinions to the Lenders and the Administrative
         Agent). Notwithstanding the foregoing, for the period from the
         effectiveness of Amendment No. 2 hereto through and including March 31,
         2003 (or until such earlier date, if any, as the UCB Stock and Asset
         Purchase Agreement shall be terminated), the obligation of the Company,
         CPFilms Inc. and Solutia Germany to take such actions shall (except in
         the case of filings and registrations to be made in Belgium, France,
         Germany and the United Kingdom with respect to the assets of the
         Company and CPFilms Inc. which are not included in the UCB Asset Sale)
         be suspended, provided that if the UCB Asset Sale is not consummated by
         March 31, 2003 (or, if the UCB Stock and Asset Purchase Agreement shall
         be earlier terminated), then the Company, CPFilms Inc. and Solutia
         Germany shall have until April 30, 2003 (or until the date 30 days
         after such termination) to complete the actions specified above."

                  2.03. Liens, Etc. Clause (iii) of Section 6.02(a) of the
                        ----------
Credit Agreement is hereby amended to read in its entirety as follows:

                  "(iii) Liens securing Debt, judgments and ERISA claims
         existing on the date hereof and identified in Schedule 1 hereto, and
         Liens arising out of Capitalized Lease Obligations of AMCIS, AG
         relating to certain machinery and equipment securing Debt in an
         aggregate amount up to but not exceeding 7,500,000 Swiss francs; and"

                                 Amendment No. 2

<PAGE>
<PAGE>
                                      -4-

                  2.04. Indebtedness and Letters of Credit. Clause (ii) of
                        ----------------------------------
Section 6.02(f) of the Credit Agreement is hereby amended to read in its
entirety as follows:

                  "(ii) Debt existing on the date hereof and set forth in
         Schedule 4 hereto (including Debt, if any, in respect of Designated
         Letters of Credit, and drawn and undrawn amounts under agreements set
         forth on such Schedule 4), and Debt in respect of Capitalized Lease
         Obligations of AMCIS, AG referred to in Section 6.02(a)(iii) in an
         aggregate amount up to but not exceeding 7,500,000 Swiss francs,
         together with extensions, renewals and replacements of any such Debt
         that do not increase the outstanding principal amount thereof;"

                  2.05. Debt to Adjusted EBITDA Ratio. Section 6.03(a) of the
                        -----------------------------
Credit Agreement is hereby amended to read in its entirety as follows:

                  "(a) Debt to Adjusted EBITDA Ratio. The Company will not
                       -----------------------------
         permit the Debt to Adjusted EBITDA Ratio to exceed the following ratios
         at any time during the following respective periods:

<Table>
<Caption>

                             Period                               Ratio
                             ------                               -----
<S>                                                             <C>

                  From the Restatement Date
                    through December 30, 2002                   5.00 to 1

                  From December 31, 2002
                    up to the Applicable Date                   5.00 to 1

                  From the Applicable Date
                    through June 29, 2003                       4.00 to 1

                  From June 30, 2003
                    through September 29, 2003                  4.00 to 1

                  From September 30, 2003
                    through December 30, 2003                   3.75 to 1

                  From December 31, 2003
                    through March 30, 2004                      3.50 to 1

                  From March 31, 2004
                    and at all times thereafter                 3.25 to 1"
</Table>

                                 Amendment No. 2

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<PAGE>
                                      -5-

                  2.06. Interest Coverage Ratio. Section 6.03(b) of the Credit
                        -----------------------
Agreement is hereby amended to read in its entirety as follows:

                  "(b) Interest Coverage Ratio. The Company will not permit the
                       -----------------------
Interest Coverage Ratio to be less than the following respective ratios at any
time during the following respective periods:

<Table>
<Caption>

                           Period                                    Ratio
                           ------                                    -----
<S>                                                                <C>

                  From June 30, 2002
                    through December 30, 2002                      2.50 to 1

                  From December 31, 2002
                    through March 30, 2003                         2.00 to 1

                  From March 31, 2003
                    through June 29, 2003                          1.50 to 1

                  From June 30, 2003
                    through September 29, 2003                     1.50 to 1

                  From September 30, 2003
                    through December 30, 2003                      1.75 to 1

                  From December 31, 2003
                    through March 30, 2004                         2.00 to 1

                  From March 31, 2004
                    and at all times thereafter                    2.50 to 1"
</Table>

                  2.07. Schedule. Schedule 2 to the Credit Agreement is hereby
                        --------
amended to read in its entirety as set forth on Schedule 2 hereto.

                  Section 3. Consents. The Majority Lenders hereby consent to
                             --------
the consummation of the UCB Asset Sale pursuant to the UCB Stock and Asset
Purchase Agreement, subject, however, to the prepayment of the Revolving Credit
and Term Advances, the Co-gen Instruments, and the provision of cover for the
Designated Letters of Credit and Letter of Credit Exposure, all as contemplated
by Section 2.10(h) of the Credit Agreement from the Net Cash Proceeds thereof
and all without reduction of Revolving Credit Commitments. The Majority Lenders
also hereby waive any requirement that all Advances made to the Company be paid
in full before any Term Advances made to the European Borrowers may be prepaid,
and any right of any Term Lender to decline any prepayment pursuant to Section
2.10(j) of the Credit Agreement.

                  Section 4. Authorization to Collateral Agent. Without limiting
                             ---------------------------------
the generality of Section 6.03 of the Non-Sharing Intercreditor Agreement, the
Majority Lenders hereby agree that the Collateral Agent is authorized and
directed to release any Collateral (as such term is defined

                                 Amendment No. 2

<PAGE>
<PAGE>
                                      -6-

in the Non-Sharing Intercreditor Agreement) that is the subject of the UCB Asset
Sale, and is authorized and directed to release all Liens upon the property of
the European Borrowers upon the termination of their status as Designated
Borrowers and the repayment in full of the principal of and interest on all Term
Advances in connection with the UCB Asset Sale.

                  Section 5. Representations and Warranties. The Company hereby
                             ------------------------------
represents and warrants to the Administrative Agent and the Lenders that:

                  (a) the representations and warranties contained in the Credit
         Agreement (giving effect to all amendments thereto contemplated
         hereunder) are correct on and as of the date hereof, as though made on
         and as of such date (or, if any such representation or warranty is
         expressly stated to have been made as of a specific date, as of such
         specific date);

                  (b) after giving effect to this Amendment No. 2, no event has
         occurred and is continuing that constitutes a Default or an Event of
         Default; and

                  (c) the Company has heretofore delivered to the Administrative
         Agent, and made available to each Lender through Intralinks, a true and
         complete copy (including all Schedules (other than Schedules 1.2(i),
         3.2(g), 10(a)(i), 10.1(c)(i) and 10(f)(ii)), but excluding Disclosure
         Schedules and Exhibits, thereto) of the UCB Stock and Asset Purchase
         Agreement duly executed and delivered by each of the parties thereto.

                  Section 6. Conditions Precedent. As provided in Section 2, the
                             --------------------
amendments to the Credit Agreement set forth in Section 2 are subject to, and
will become effective upon, the satisfaction of the following conditions
precedent (including, with respect to each document required below to be
delivered, that the Administrative Agent shall have received each such document,
which shall be satisfactory in form and substance to the Administrative Agent):

                  (a) Execution. This Amendment No. 2 shall have been duly
                      ---------
         executed and delivered by the Company and the Administrative Agent as
         provided on the signature pages hereof.

                  (b) Certain Consents and Authorizations. The requisite lenders
                      -----------------------------------
         under the Astaris Credit Agreement, to the extent necessary under the
         Astaris Guaranty Agreement, shall have executed and delivered a consent
         to the transactions contemplated hereby pursuant to an instrument in
         form and substance satisfactory to the Administrative Agent. In
         addition, the purchasers under the Co-gen Participation Agreement, to
         the extent necessary under the Co-gen Guaranty Agreement and the Co-gen
         Lease, shall have consented to the transactions contemplated hereby
         pursuant to an instrument in form and substance satisfactory to the
         Administrative Agent.

                  (c) Fees and Expenses. The Administrative Agent shall have
                      -----------------
         received, for the account of each Lender that has authorized the
         Administrative Agent to execute and deliver this Agreement on its
         behalf not later than 5 p.m. New York City time on

                                 Amendment No. 2

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<PAGE>
                                      -7-

         December 24, 2002, an amendment fee in an amount equal to 0.15% of the
         sum of such Lender's Revolving Credit Commitments and Term Advances.

                  (d) Other Documents. The Administrative Agent shall have
                      ---------------
         received such other documents as the Administrative Agent or Milbank,
         Tweed, Hadley & McCloy LLP, special New York counsel to the
         Administrative Agent, may reasonably request.

                  Section 7. Miscellaneous. Except as herein provided, the
                             -------------
Credit Agreement shall remain unchanged and in full force and effect. This
Amendment No. 2 may be executed in any number of counterparts, all of which
taken together shall constitute one and the same instrument and any of the
parties hereto may execute this Amendment No. 2 by signing any such counterpart.
This Amendment No. 2 shall be governed by, and construed in accordance with, the
law of the State of New York.

                                 Amendment No. 2

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<PAGE>
                                      -8-

                  IN WITNESS WHEREOF, the parties hereto have caused this
Amendment No. 2 to be executed by their respective officers thereunto duly
authorized, as of the date first above written.

                                       SOLUTIA INC.

                                       By:            Kevin Wilson
                                          --------------------------------------
                                          Name:  C. Kevin Wilson
                                          Title: Vice President and Treasurer
                                                 Solutia Inc.

                                       CITIBANK, N.A., as Administrative Agent
                                          and on behalf of the Majority Lenders

                                       By:         James N. Simpson
                                          --------------------------------------
                                          Name:  James N. Simpson
                                          Title: Vice President
                                                 Citibank, N.A.

                                 Amendment No. 2<PAGE>

                                                               Exhibit 10(t)

                                                              EXECUTION COPY

                       AMENDMENT TO PROTOCOL AGREEMENT

                  THIS AMENDMENT TO PROTOCOL AGREEMENT, dated as of March 3,
2003 (this "Amendment"), by and among Pharmacia Corporation, a Delaware
            ---------
corporation ("Pharmacia"), Solutia Inc., a Delaware corporation ("Solutia"),
              ---------                                           -------
and Monsanto Company, a Delaware corporation ("Monsanto").
                                               --------

                            W I T N E S S E T H:

                  WHEREAS, pursuant to its obligations under the Amended
Distribution Agreement, Solutia has agreed to and has been defending
Pharmacia in connection with Commonwealth of Pennsylvania et al. v. United
States Mineral Products et al., Nos. 284 M.D., 244 M.D. (Penn. Comm. Ct.)
(the "Pennsylvania Litigation");
      -----------------------

                  WHEREAS, a jury verdict has been returned in the
Pennsylvania Litigation with respect to the liability of Solutia and
Pharmacia and judgment in the Pennsylvania Litigation has been entered in
the amount of $59.5 million (the "Judgment");
                                  --------

                  WHEREAS, under Pennsylvania law a bond in the amount of
120% of the Judgment, or approximately $71.4 million, was required to be
posted in order to stay execution of the Judgment pending appeal of the
Judgment (the "Appeal");
               ------

                  WHEREAS, Pharmacia, Solutia and Monsanto are parties to
that certain Protocol Agreement, dated as of November 15, 2002 (the
"Protocol Agreement"), pursuant to which, among other things, Monsanto,
 ------------------
pursuant to its obligations under the Amended Separation Agreement, agreed
to post a bond in order to stay execution of the Judgment pending the
Appeal;

                  WHEREAS, on or about November 15, 2002, Monsanto caused
Safeco Insurance Company of America (the "Monsanto Surety") to post that
                                          ---------------
certain Supersedes Bond for Stay of Execution of Judgment Pending Resolution
of All Appeals in the amount of $71,433,900 (the "Pennsylvania Litigation
                                                  -----------------------
Appeal Bond") in order to stay execution of the Judgment pending the Appeal;
-----------

                  WHEREAS, pursuant to its obligations under the Protocol
Agreement, Solutia agreed to obtain and deliver to Monsanto (i) the Monsanto
Surety's complete and unconditional written release of Monsanto from all of
its commitments and obligations with respect to the Pennsylvania Litigation
Appeal Bond; and (ii) evidence satisfactory to Monsanto in its sole
discretion that Solutia has either (A) secured a replacement bond that is
sufficient to stay execution of the Judgment pending Appeal or (B) settled
all of the claim(s) at issue, or arguably at issue, in the Appeal and/or the
Pennsylvania Litigation, provided that the settlement includes as a term
thereof delivery by the claimant(s) or plaintiff(s) to Pharmacia and
Monsanto of a written release of Pharmacia, Monsanto and Solutia from all
liability with respect to the Pennsylvania Litigation once payment of the
settlement and fulfillment of any other obligations of the settlement have
been effectuated (subparts (i) and (ii) of this clause are referred to
collectively as the "Release Conditions") within fifteen (15) business days
                     ------------------
following Solutia's consummation of an asset sale transaction having an
aggregate value of $100 million or greater;

<PAGE>
<PAGE>

                                                              EXECUTION COPY

                  WHEREAS, pursuant to its obligations under the Protocol
Agreement, Solutia was required to satisfy the Release Conditions on or
before February 21, 2003, as a result of the sale of Solutia's resins,
additives and adhesives business to UCB S.A. for $500 million cash on
January 31, 2003;

                  WHEREAS, Solutia acknowledges and agrees that it has not
satisfied the Release Conditions within the required time period under the
Protocol Agreement; and

                  WHEREAS, Solutia has requested, and Monsanto has agreed
subject to the terms and conditions of this Amendment, to extend the time
period within which Solutia may satisfy the Release Conditions under the
Protocol Agreement.

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

         Section 1.    Defined Terms. Each capitalized term used in this
Amendment and not otherwise defined herein shall have the meaning ascribed
thereto in the Protocol Agreement. The parties hereto affirm the factual
accuracy of each of the recitals set forth above to the extent that they
relate to such party.

         Section 2.    Forbearance by Monsanto. Upon the execution of this
Amendment by each party hereto and the satisfaction of each of the
conditions set forth in Section 4 of this Amendment, Monsanto agrees to
refrain until November 30, 2003 (the "Extension Period") from exercising its
                                      ----------------
rights and remedies granted under the Protocol Agreement, and at law or in
equity, as a result of Solutia's failure to satisfy the Release Conditions
within the required time period under Section 4(d) of the Protocol
Agreement. The Extension Period shall automatically terminate, without
further act or instrument, upon the occurrence of any of the following
events:

                  (a)  the failure by Solutia to timely perform and observe
any of the covenants, agreements and obligations contained in the Protocol
Agreement or any other document executed pursuant thereto, except as
modified by this Amendment;

                  (b)  any representation or warranty made to Monsanto by
Solutia in this Amendment, the Protocol Agreement or any other document
executed pursuant thereto is or was, when it was made, untrue or incorrect;
or

                  (c)  a petition under any bankruptcy, insolvency or
debtor's relief law is filed by or against Solutia.

Upon the expiration or termination of the Extension Period, Solutia
acknowledges and agrees that Monsanto shall be entitled to immediately
exercise any and all of its rights and remedies granted under the Protocol
Agreement, and at law or in equity.

                                     2

<PAGE>
<PAGE>

                                                              EXECUTION COPY

         Section 3.    Settlement Control Decisions.

                  (a)  The parties hereby agree the term "Settlement Control
Rights" (which first appears and is defined in Section 4(c)(ii) of the
Protocol Agreement) shall be deleted in each place that it appears in the
Protocol Agreement and shall be replaced with the term "Monsanto Settlement
                                                        -------------------
Control Rights" in each such instance.
--------------

                  (b)  Upon the execution of this Amendment by each party
hereto and the satisfaction of each of the conditions set forth in Section 4
of this Amendment, Monsanto agrees to suspend the Monsanto Settlement
Control Rights through the last day of the Extension Period.

                  (c)  Upon the execution of this Amendment by each party
hereto and the satisfaction of each of the conditions set forth in Section 4
of this Amendment, Monsanto and Pharmacia agree that through the last day of
the Extension Period (A) Solutia shall have sole and exclusive right to
compromise or settle, on a commercially reasonable basis, all claims at
issue, or arguably at issue, in the Appeal and/or the Pennsylvania
Litigation; (B) Solutia need not receive the consent or approval of
Pharmacia or Monsanto to settle any or all claims at issue, or arguably at
issue, in the Appeal and/or the Pennsylvania Litigation, provided that such
settlement includes as a term thereof delivery by the claimant(s) or
plaintiff(s) to Pharmacia and Monsanto of a written release of Pharmacia and
Monsanto from all liability in respect to the Pennsylvania Litigation once
payment of the settlement and fulfillment of any other obligations of the
settlement have been effectuated; and (C) Solutia shall nevertheless have a
duty of prior consultation with Monsanto and Pharmacia concerning settlement
strategies and decisions (subparts (A), (B) and (C) of Section 3(c) of this
Amendment being referred to herein collectively as the "Solutia Settlement
                                                        ------------------
Control Rights").
--------------

         Section 4.    Conditions to Effectiveness. The effectiveness of
(i) Monsanto's agreements to refrain from exercising its rights and remedies
as set forth in Section 2 of this Amendment, to suspend the Monsanto
Settlement Control Rights during the Extension Period as set forth in
Section 3(b) of this Amendment, and to grant the Solutia the Solutia
Settlement Control Rights during the Extension Period as set forth in
Section 3(c) of this Amendment; and (ii) Pharmacia's agreement to grant
Solutia the Solutia Settlement Control Rights during the Extension Period as
set forth in Section 3(c) of this Amendment, are subject to the satisfaction
and occurrence of the following conditions:

                  (a)  Each of the parties hereto shall have received
executed counterparts of this Amendment;

                  (b)  On or before 5:00 p.m., St. Louis time, on March 10,
2003:

                       (i)   Solutia shall provide a letter of credit to
Monsanto in the amount of $39,900,000 and in the form attached hereto as
Exhibit A (the "Additional Solutia LOC"); and
---------       ----------------------

                       (ii)  Monsanto and Pharmacia shall have received
payment from Solutia of all of their respective costs and expenses related
to the negotiation, documentation and/or implementation of the transactions
contemplated hereby, including, without limitation, attorneys' fees and
disbursements.

                                     3

<PAGE>
<PAGE>

                                                              EXECUTION COPY

         Section 5.    Limited Waiver of Non-Compliance. In the event Solutia
delivers evidence satisfactory to Monsanto in its sole discretion that
Solutia has satisfied the Release Conditions prior to the termination of the
Extension Period, Monsanto agrees to waive Solutia's failure to satisfy the
Release Conditions within the required time period under the Protocol
Agreement; provided, that such waiver, if and when given by Monsanto, shall
           --------
not operate or be construed as a waiver of any other or subsequent breach by
Solutia under the Protocol Agreement. Monsanto agrees to execute any
document and take such other acts as may be reasonably requested by Solutia
to give effect to such waiver.

         Section 6.    No waiver; Full Force and Effect. Other than as
expressly provided in Sections 2, 3 and 4 of this Amendment and subject to
compliance with the terms and conditions of such Sections, none of
Pharmacia, Monsanto or Solutia has waived or compromised any of their
respective rights under the Protocol Agreement, the Amended Distribution
Agreement, the Anniston Protocol Agreement or the Amended Separation
Agreement. Notwithstanding anything to the contrary set forth in this
Amendment, except as modified herein, the Protocol Agreement, the Amended
Distribution Agreement, the Anniston Protocol Agreement and the Amended
Separation Agreement are in full force and effect in accordance with their
respective terms, remain valid and binding obligations of the respective
parties thereto and are hereby ratified and confirmed by Solutia, Monsanto
and Pharmacia, as applicable.

         Section 7.    Miscellaneous.

                  (a)  Clarification of Protocol Agreement. The parties
hereby agree, for purposes of clarification, that any reference to the term
"Pennsylvania Appeal Bond" in the Protocol Agreement shall be deemed to be a
reference to the term "Pennsylvania Litigation Appeal Bond," as defined in
the Protocol Agreement. The parties hereby further agree, for purposes of
clarification, that the Additional Solutia LOC is in addition to and not in
lieu of the Solutia LOC delivered to Monsanto under the Protocol Agreement
and that as a result of Solutia's delivery to Monsanto of the Additional
Solutia LOC pursuant to the terms of this Amendment, Monsanto shall have an
aggregate of $59,900,000 in collateral support available to it with respect
to the Pennsylvania Litigation Appeal Bond.

                  (b)  Effect of Amendment. No reference to this Amendment
need be made in any instrument or document at any time referring to the
Protocol Agreement, a reference to the Protocol Agreement in any of such to
be deemed to be a reference to Protocol Agreement, as amended hereby.

                  (c)  Governing Law. This Amendment shall be governed by and
construed in accordance with the laws of the State of Delaware as to all
matters, including matters of validity, construction, effect, performance
and remedies (other than the laws regarding choice of laws and conflicts of
laws).

                  (d)  Amendments and Modifications. This Amendment may be
amended, modified or supplemented only by a written agreement signed by all
of the parties hereto.

                                     4

<PAGE>
<PAGE>

                                                              EXECUTION COPY

                  (e)  Binding Effect; Assignment. This Amendment and all of
the provisions hereof shall be binding upon and inure to the benefit of the
parties hereto and their successors, but neither this Amendment nor any of
the rights, interests and obligations hereunder shall be assigned by any
party hereto.

                  (f)  Counterparts. This Amendment 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. Copies of
executed counterparts transmitted by telecopy, telefax or other electronic
transmission service shall be considered original executed counterparts for
purposes of this Section 7(f), provided receipt of copies of such
counterparts is confirmed.

                  (g)  Blue Penciling; Specific Performance. Any provision
of this Amendment that is prohibited or unenforceable in any jurisdiction,
shall, as to such jurisdiction, be ineffective to the extent of such
prohibition or unenforceability without invalidating the remaining
provisions hereof. Any such prohibition or unenforceability in any
jurisdiction shall not invalidate or render unenforceable such provision in
any other jurisdiction. Each party acknowledges that money damages would be
an inadequate remedy for any breach of the provisions of this Amendment and
agrees that the obligations of the parties hereunder shall be specifically
enforceable.

                        [SIGNATURE PAGE IS NEXT PAGE]

                                     5

<PAGE>
<PAGE>

                                                              EXECUTION COPY

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

                                    PHARMACIA CORPORATION,
                                    a Delaware corporation

                                    By:  /s/ Richard T. Collier
                                        -------------------------------------
                                           Name: Richard T. Collier
                                           Title: SVP and General Counsel

                                    MONSANTO COMPANY,
                                    a Delaware corporation

                                    By:  /s/ Terrell K. Crews
                                        -------------------------------------
                                           Name: Terrell K. Crews
                                           Title: Executive Vice President
                                                  and Chief Financial Officer

                                    SOLUTIA INC.,
                                    a Delaware corporation

                                    By:  /s/ Jeffry N. Quinn
                                        -------------------------------------
                                           Name: Jeffry N. Quinn
                                           Title: Senior Vice President,
                                                  Secretary and General
                                                  Counsel

                                     6

<PAGE>
<PAGE>

                                                              EXECUTION COPY

                                  EXHIBIT A

                                   FORM OF
                          SOLUTIA LETTER OF CREDIT

            IRREVOCABLE LETTER OF CREDIT NO.
                                            --------------------

                          DATE
                              ---------------------

Monsanto Company
Attn: General Counsel
800 North Lindbergh Boulevard
St. Louis, MO 63167

To Whom It May Concern:

At the request of Solutia, Inc. ("Solutia") we, (Name and Address of Bank),
have opened an IRREVOCABLE LETTER OF CREDIT in your favor for $39,900,000
U.S. Dollars, available by your drafts at sight.

We warrant to you that all your drafts under this IRREVOCABLE LETTER OF
CREDIT will be duly honored upon presentation of your draft on us at
(Address of Bank) on or before the expiration date or on or before any
automatically extended date as set forth below.

Any draft(s) drawn by you under this Letter of Credit shall be accompanied
by your written certification that you have procured the execution of a bond
in the amount of $71,433,900.00 at the request of Solutia and that any one
or more of the following exists: (i) Claims have been made by SAFECO
Insurance Company of America ("Safeco") against you with respect to the bond
posted by Safeco ("Safeco Bond") in favor of Monsanto Company relating to
the Commonwealth of Pennsylvania, Department of General Services et. al., v.
    ------------------------------------------------------------------------
United States Mineral Products et. al., No. 284 M.D. 244 M.D. (Pennsylvania
--------------------------------------
Commonwealth Court) ("Pennsylvania Litigation"); (ii) Claims have been made
by Safeco against any letter of credit or other collateral posted by you in
order to secure your performance of the Safeco Bond; (iii) An agreement has
been duly executed by the parties to the Pennsylvania Litigation settling
any claims at issue, or arguably at issue, in the Pennsylvania Litigation
and Solutia has not paid the required settlement amount within five
(5) business days after such agreement has been fully executed; or
(iv) A final, non-appealable judgment in the Pennsylvania Litigation has
been entered by a court of competent jurisdiction against Solutia or
Pharmacia Corporation (a/k/a Monsanto Company) and Solutia has not paid the
required judgment amount within five (5) business days after such judgment
has been entered.

Except as stated herein, this IRREVOCABLE LETTER OF CREDIT is effective
           , 2003, and expires on August 1, 2004, but will be automatically
-----------
extended without amendment for successive one-year periods from the current
expiration date and any future expiration date unless at least 90 days prior
to expiration date we notify you by registered letter that we elect not to
renew for such additional one-year periods.

This credit is subject to the Uniform Customs and Practices for Documentary
Credits (1993 Revision), International Chamber of Commerce, publication
no. 500.

                                       Very truly yours,

                                              (Authorized Signature)

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

                                                     (Title)

                                       -------------------------------------
                     (To be prepared on Bank Letterhead)

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