Exhibit 4.9
                               (Face of Security)


                        CLARK REFINING & MARKETING, INC.

                   8 7/8% SENIOR SUBORDINATED NOTES DUE 2007

No. __________                                                      $175,000,000

          Clark Refining & Marketing, Inc., a corporation duly organized and
existing under the laws of Delaware (herein called the "Company," which term
includes any successor Person under the Indenture hereinafter referred to), for
value received, hereby promises to pay to Cede & Co., or registered assigns, the
principal sum set forth above or such other principal sum indicated on the
Schedule attached hereto (which shall not exceed $175,000,000) in United States
Dollars on November 15, 2007, and to pay interest at the rate of 8 7/8% per
annum from the Issue Date or from the most recent Interest Payment Date to which
interest has been paid or duly provided for in cash in arrears on each May 15
and November 15 to the person whose name the Security is registered at the close
of business on the May 1 or November 1 next preceding such Interest Payment
Date, until the principal hereof is paid or made available for payment;
provided, however, in the event that (i) the Company has not filed the
registration statement relating to the Exchange Offer within 90 days following
the Issue Date, or (ii) such registration statement has not become effective
within 180 days following the Issue Date, (iii) the resale registration
statement has not become effective within 105 days of the date on which the
obligation to file such resale registration statement arose, or (iv) the
Exchange Offer has not been consummated within 30 business days after the
effectiveness deadline  of the Exchange Offer Registration Statement, (v) the
Company has not filed the resale registration statement within 45 days after the
obligation to file such resale registration statement arose, or (vi) any
registration statement required by the Registration Rights Agreement is filed
and declared effective but shall thereafter cease to be effective (except as
specifically permitted therein) without being succeeded within 30 days by an
additional registration statement filed and declared effective (any such event
referred to in Clauses (i) through (vi), the "Registration Default"), then, as
liquidated damages for such Registration Default, subject to the Registration
Rights Agreement, the per annum interest rate on the Notes will increase by
0.25% ("Special Interest") for the period from the occurrence of the
Registration Default until such time as no Registration Default is in effect (at
which time the interest rate will be reduced to its initial rate). If the
Company has not consummated the Exchange Offer (or, if applicable, the resale
registration has not become effective), within 270 days following the Issue
Date, then the per annum dividend rate on the Securities will increase by an
additional 0.25% for so long as the Company has not consummated the Exchange
Offer (or until such resale registration becomes effective).

          Any accrued and unpaid interest on this Security upon the issuance of
an Exchange Note in exchange for this Security shall cease to be payable to the
Holder hereof but such accrued and unpaid interest shall be payable on the next
Interest Payment Date for such Exchange Note to the Holder thereof on the
related Regular Record Date.

                                       1

 
          The interest so payable, and punctually paid or duly provided for, on
any Interest Payment Date will, as provided in such Indenture, be paid to the
Person in whose name this Security (or one or more Predecessor Securities) is
registered at the close of business on the Regular Record Date for such
interest, which shall be the May 1 or November 1 (whether or not a Business
Day), as the case may be, next preceding such Interest Payment Date at the
office or agency of the Company at New York, New York maintained for such
purpose and at any other office or agency maintained by the Company for such
purchase (any such location being called a "Place of Payment"); provided,
however, that at the option of the Company payment of interest may be made by
check to the address of the Person entitled thereto as such address shall appear
on the Security Register.  Interest shall be payable in cash.  Any such interest
not so punctually paid or duly provided, and interest on such defaulted interest
at the interest rate borne by the Securities, to the extent lawful, shall
forthwith cease to be payable to the Holder on such Regular Record Date and
shall be paid to the Person in whose name this Security (or one or more
Predecessor Securities) is registered at the close of business on a special
record date ("Special Record Date") for the payment of such defaulted interest
to be fixed by the Company with the consent of the Trustee, notice whereof shall
be given to Holders of Securities not less than 10 days prior to such Special
Record Date, or may be paid at any time in any other lawful manner not
inconsistent with the requirements (if applicable) of any securities exchange on
which the Securities may be listed, and upon such notice as may be required by
such securities exchange, all as more fully provided in said Indenture.

          If this Security is a Global Security, all payments in respect of this
Security will be payable to the Global Security Holder in its capacity as the
registered Holder under the Indenture.  If this Security is not a Global
Security, payment of the principal of, premium, if any, and interest on this
Security will be made at the office or agency of the Company maintained for that
purpose in the City and State of New York, in such coin or currency of the
United States of America as at the time of payment is legal tender for payment
of public and private debts, or at the option of the Company, payment of
interest may be made by check mailed to the address of the Person entitled
thereto as such address shall appear in the Security Register; provided,
however, that payment by wire transfer of immediately available funds will be
required with respect to principal of, premium, if any, and interest on, all
Global Notes and all other Securities the Holders of which shall have provided
wire transfer instructions to the Company or the Paying Agent.

          Reference is hereby made to the further provisions of this Security
set forth on the reverse hereof, which further provisions shall for all purposes
have the same effect as if set forth at this place.

          Unless the certificate of authentication hereon has been executed by
the Trustee by manual signature, this Security shall not be entitled to any
benefit under the Indenture or be valid or obligatory for any purpose.

                                       2

 
          IN WITNESS WHEREOF, the Company has caused this instrument to be duly
executed.

Dated:  November 21, 1997

 
                                                CLARK REFINING & MARKETING, INC.
Attest:



- -------------------------------                 By __________________________
Name:                                              Name:
Title:                                             Title:


Certificate of Authentication


          This is one of the Securities referred to in the within-mentioned
Indenture.

                                 MARINE MIDLAND BANK,
                                 as Trustee


                                 By:_________________________________________
                                    Authorized Signatory

                                       3

 
                              (Back of Security)

          THIS GLOBAL NOTE IS HELD BY THE DEPOSITORY (AS DEFINED IN THE
INDENTURE GOVERNING THIS NOTE) OR ITS NOMINEE IN CUSTODY FOR THE BENEFIT OF THE
BENEFICIAL OWNERS HEREOF, AND IS NOT TRANSFERABLE TO ANY PERSON UNDER ANY
CIRCUMSTANCES EXCEPT THAT (I) THE TRUSTEE MAY MAKE SUCH NOTATIONS HEREON AS MAY
BE REQUIRED PURSUANT TO SECTION 2.06 OF THE INDENTURE, (II) THIS GLOBAL NOTE MAY
BE EXCHANGED IN WHOLE BUT NOT IN PART PURSUANT TO SECTION 2.06(a) OF THE
INDENTURE, (III) THIS GLOBAL NOTE MAY BE DELIVERED TO THE TRUSTEE FOR
CANCELLATION PURSUANT TO SECTION 2.11 OF THE INDENTURE AND (IV) THIS GLOBAL NOTE
MAY BE TRANSFERRED TO A SUCCESSOR DEPOSITORY WITH THE PRIOR WRITTEN CONSENT OF
THE COMPANY.

     THIS NOTE HAS NOT BEEN REGISTERED UNDER THE U.S. SECURITIES ACT OF 1933, AS
AMENDED (THE "SECURITIES ACT") AND, ACCORDINGLY, MAY NOT BE OFFERED, SOLD,
PLEDGED OR OTHERWISE TRANSFERRED WITHIN THE UNITED STATES OR TO, OR FOR THE
ACCOUNT OR BENEFIT OF, U.S. PERSONS, EXCEPT AS SET FORTH IN THE FOLLOWING
SENTENCE. BY ITS ACQUISITION HEREOF OR OF A BENEFICIAL INTEREST HEREIN, THE
HOLDER (1) REPRESENTS THAT (A) IT IS A "QUALIFIED INSTITUTIONAL BUYER" (AS
DEFINED IN RULE 144A UNDER THE SECURITIES ACT) (A "QIB"), (B) IT IS NOT A U.S.
PERSON, IS NOT ACQUIRING THIS NOTE FOR THE ACCOUNT OR BENEFIT OF A U.S. PERSON
AND IS ACQUIRING THIS NOTE IN AN OFFSHORE TRANSACTION IN COMPLIANCE WITH
REGULATION S UNDER THE SECURITIES ACT OR (C) IT IS AN INSTITUTIONAL "ACCREDITED
INVESTOR" (AS DEFINED IN RULE 501(A)(1), (2), (3) OR (7) OF REGULATION D UNDER
THE SECURITIES ACT) (AN "IAI"), (2) AGREES THAT IT WILL NOT, WITHIN THE TIME
PERIOD REFERRED TO UNDER RULE 144(k) (TAKING INTO ACCOUNT THE PROVISIONS OF RULE
144(d) UNDER THE SECURITIES ACT, IF APPLICABLE) UNDER THE SECURITIES ACT AS IN
EFFECT ON THE DATE OF THE TRANSFER OF THIS NOTE, RESELL OR OTHERWISE TRANSFER
THIS NOTE EXCEPT (A) TO THE COMPANY OR ANY SUBSIDIARY THEREOF, (B) TO A PERSON
WHOM THE HOLDER REASONABLY BELIEVES IS A QIB PURCHASING FOR ITS OWN ACCOUNT OR
FOR THE ACCOUNT OF A QIB IN COMPLIANCE WITH RULE 144A UNDER THE SECURITIES ACT,
(C) OUTSIDE THE UNITED STATES IN AN OFFSHORE TRANSACTION IN COMPLIANCE WITH RULE
904 UNDER THE SECURITIES ACT, (D) PURSUANT TO THE EXEMPTION FROM REGISTRATION
PROVIDED BY RULE 144 UNDER THE SECURITIES ACT (IF AVAILABLE), (E) TO AN IAI
THAT, PRIOR TO SUCH TRANSFER, FURNISHES TO THE TRUSTEE A SIGNED LETTER
CONTAINING CERTAIN REPRESENTATIONS AND AGREEMENTS RELATING TO THE REGISTRATION
OF TRANSFER OF THIS NOTE (THE FORM OF WHICH LETTER CAN BE OBTAINED FROM THE
TRUSTEE) OR (F) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE
SECURITIES ACT AND, IN EACH CASE, IN ACCORDANCE WITH APPLICABLE STATE SECURITIES
LAWS, AND (3) AGREES THAT IT WILL DELIVER TO EACH PERSON TO WHOM THIS NOTE OR AN
INTEREST HEREIN IS TRANSFERRED A NOTICE SUBSTANTIALLY TO THE EFFECT OF THIS
LEGEND. IN CONNECTION WITH ANY TRANSFER OF THIS NOTE OR ANY INTEREST


                                       4

 
HEREIN WITHIN THE TIME PERIOD REFERRED TO ABOVE, THE HOLDER MUST CHECK THE
APPROPRIATE BOX SET FORTH ON THE REVERSE HEREOF RELATING TO THE MANNER OF SUCH
TRANSFER AND SUBMIT THIS CERTIFICATE TO THE TRUSTEE. EACH IAI THAT IS NOT A QIB
WILL BE REQUIRED TO EFFECT ANY TRANSFER OF NOTES OR INTERESTS THEREIN (OTHER
THAN PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT) THROUGH ONE OF THE INITIAL
PURCHASERS. AS USED HEREIN, THE TERMS "OFFSHORE TRANSACTION," "UNITED STATES"
AND "U.S. PERSON" HAVE THE MEANINGS GIVEN TO THEM BY RULE 902 OF REGULATION S
UNDER THE SECURITIES ACT. THE INDENTURE CONTAINS A PROVISION REQUIRING THE
TRUSTEE TO REFUSE TO REGISTER ANY TRANSFER OF THIS NOTE IN VIOLATION OF THE
FOREGOING RESTRICTIONS.

          This Security is one of a duly authorized issue of securities of the
Company designated as its 8 7/8% Senior Subordinated Notes due 2007 (herein
called the "Securities"), issued and to be issued in one or more series under an
Indenture, dated as of November 21, 1997 (as it may from time to time be
supplemented or amended by one or more supplemental indentures, herein called
the "Indenture"), between the Company and Marine Midland Bank, as Trustee
(herein called the "Trustee," which term includes any successor trustee under
the Indenture), to which Indenture and all indentures supplemental thereto
reference is hereby made for a statement of the respective rights, limitations
of rights, duties and immunities thereunder of the Company and the Trustee of
the Securities and of the terms upon which the Securities are, and are to be,
authenticated and delivered. This issue of Securities is limited in aggregate
principal amount to $175,000,000.

          The Securities are subject to redemption at the option of the Company,
in whole or in part at any time on or after November 15, 2002, upon not less
than 30 nor more than 60 days' notice mailed to each holder of Securities to be
redeemed at such holder's address appearing on the Company' Securities
Registrar, in principal amounts of $1,000 or an integral multiple of $1,000, at
the following redemption prices (expressed as percentages of the principal
amount) if redeemed during the 12-month period commencing on November 15 of each
of the years set forth below, plus, in each case, interest accrued thereon to,
but excluding, the date of redemption.



               Year                         Percentage       
               ----                         ----------       
                                         
               2002                            104.437%         
               2003                            102.958%          
               2004                            101.479%          
               2005 and thereafter             100.000%          


          In addition, the Company may, at its option, use the net cash proceeds
of one or more Equity Offerings to the extent the net cash proceeds thereof are
contributed to the equity capital of the Company to redeem for cash up to 35% in
aggregate principal amount of the Securities originally issued under the
Indenture at any time prior to November 15, 2001, at a redemption price equal to
108.875% of the aggregate principal amount so redeemed, plus accrued interest,
including Special Interest, to the Redemption Date; provided that at least 50%
of the principal amount of Securities originally issued remain outstanding
immediately after such redemption. Any such redemption shall be required to
occur on or prior to 120 days after the

                                       5

 
receipt by the Company of the Net Available Proceeds of such Equity Offering and
upon not less than 30 nor more than 60 days' notice mailed to each holder of
Securities to be redeemed at such holder's address appearing in the Company's
Security Register, in principal amounts of $1,000 or an integral multiple of
$1,000. The Company may not use the Net Available Proceeds of any Equity
Offerings which alone or combined with a related series of transactions result
in a Change of Control to redeem Securities pursuant to this paragraph.

          If less than all of the Securities are to be redeemed at any time, the
Trustee shall select, in such manner as it shall deem fair and appropriate, the
particular Securities to be redeemed; provided that Securities redeemed in part
will only be redeemed in integral multiples of $1,000.

          The Indenture provides that, subject to certain conditions, if (i)
certain Net Available Proceeds are available to the Company as a result of Asset
Dispositions or (ii) a Change of Control Triggering Event occurs, the Company
shall be required to make an Offer to purchase for some or all of the Securities
in accordance with the terms of the Indenture.

          The Indenture contains provisions for defeasance at any time of (i)
the entire indebtedness of this Security or (ii) certain restrictive covenants
and Events of Default with respect to this Security, in each case upon
compliance with certain conditions set forth therein.

          In the event of redemption or purchase pursuant to a mandatory offer
to purchase of this Security in part only, a new Security or Securities for the
unredeemed or unpurchased portion hereof will be issued in the name of the
Holder hereof upon the cancellation hereof.

          If an Event of Default shall occur and be continuing, the principal of
the Securities may be declared due and payable in the manner and with the effect
provided in the Indenture.

          The Indenture permits, with certain exceptions as therein provided,
the amendment thereof and the modification of the rights and obligations of the
Company and the rights of the Holders of the Securities under the Indenture at
any time by the Company and the Trustee with the consent of the Holders of a
majority in principal amount of the Securities at the time Outstanding. The
Indenture also contains provisions permitting the Holders of specified
percentages in principal amount of the Securities at the time Outstanding, on
behalf of the Holders of all Securities, to waive compliance by the Company with
certain provisions of the Indenture and certain past defaults under the
Indenture and their consequences. The Indenture also provides that, without
notice to or consent of any Holder, the Company and the Trustee may enter into
one or more supplemental indentures to, among other things, cure any ambiguity,
defect or inconsistency, provide for uncertificated securities in addition to or
in place of certificated Securities, or make any other change, in each case,
that does not adversely affect the rights of any Holder of a Security in any
material respect. Any such consent or waiver by the Holder of this Security
shall be conclusive and binding upon such Holder and upon all future Holders of
this Security and of any Security issued upon the registration of transfer
hereof or in exchange herefor or in lieu hereof, whether or not notation of such
consent or waiver is made upon this Security.

                                       6

 
          No reference herein to the Indenture and no provision of this Security
or of the Indenture shall alter or impair the obligation of the Company, which
is absolute and unconditional, to pay the principal of (and premium, if any) and
interest, including Special Interest, if any, on this Security at the times,
place and rate, and in the coin or currency, herein prescribed.

          The Securities are subordinated in right of payment, to the extent and
in the manner provided in Article 11 of the Indenture, to the prior payment in
full of all Senior Debt, which includes (i) all Indebtedness outstanding under
the Credit Agreement and the Loan Agreement, (ii) Indebtedness represented by
the Senior Notes, the 10 1/2% Notes and the 9 1/2% Notes, (iii) any other
Indebtedness permitted to be incurred by the Company under the terms of this
Indenture, unless the instrument under which such Indebtedness is incurred
expressly provides that it is on a parity with or subordinated in right of
payment to the Securities and (iv) all Obligations with respect to the
foregoing. Notwithstanding anything to the contrary in the foregoing, Senior
Debt will not include (v) Indebtedness represented by preferred stock, (w) any
liability for federal, state, local or other taxes owed or owing by the Company,
(x) any Indebtedness of the Company to any of its Subsidiaries or other
Affiliates, (y) any trade payables or (z) any Indebtedness that is incurred in
violation of this Indenture; provided, however, that any Indebtedness incurred
under the Credit Agreement, in respect of which the lenders or the agent
thereunder receive from the Company a representation that such Indebtedness is
Senior Debt for all purposes under this Indenture, shall be Senior Debt for all
purposes under this Indenture notwithstanding this clause (z). To the extent
provided in the Indenture, Senior Debt must be paid before the Securities may be
paid. The Company agrees and each Holder of Securities by accepting a Security
consents and agrees to the subordination provided in the Indenture and
authorizes the Trustee to give it effect.

          As provided in the Indenture, the transfer of this Security is
registrable in the Security Register, upon surrender of this Security for
registration of transfer at the office or agency of the Company in any place
where the principal of (and premium, if any) and interest, including Special
Interest, if any, on this Security are payable, duly endorsed by, or accompanied
by a written instrument of transfer in form satisfactory to the Company and the
Security Registrar duly executed by, the Holder hereof or his attorney duly
authorized in writing, and thereupon one or more new Securities, of authorized
denominations and for the same aggregate principal amount, will be issued to the
designated transferee or transferees.

          The Securities are issuable only in registered form without coupons in
denominations of $1,000 and any integral multiples of $1,000. As provided in the
Indenture and subject to certain limitations therein set forth, Securities are
exchangeable for a like aggregate principal amount of Securities of a different
authorized denomination, as requested by the Holder surrendering the same.

          No service charge shall be made to the Holder for any such
registration of transfer or exchange, but the Company may require payment of a
sum sufficient to cover any tax or other governmental charge payable in
connection therewith.

          Prior to due presentment of this Security for registration of
transfer, the Company, the Trustee and any agent of the Company or the Trustee
may treat the Person in whose name this


                                       7

 
 
Security is registered as the owner hereof for all purposes, whether or not this
Security be overdue, and neither the Company, the Trustee nor any such agent
shall be affected by notice to the contrary.

          No director, officer, employee, stockholder or incorporator, as such,
of the Company shall have any liability for any obligations of the Company under
the Securities or the Indenture for any claim based on, in respect of or by
reason of such obligations or their creation. Each Holder by accepting a
Security waives and releases all such liability. Such waiver and release are
part of the consideration for the issuance of the Securities.

          Interest on this Security shall be computed on the basis of a 360-day
year comprised of twelve 30-day months.

          All terms used in this Security that are defined in the Indenture
shall have the meanings assigned to them in the Indenture.

          The Indenture and this Security shall be governed by and construed in
accordance with the laws of the State of New York (without giving effect to
conflicts of law principles thereof).

                                       8

 
                      OPTION OF HOLDER TO ELECT PURCHASE

          If you want to elect to have this Security purchased in its entirety
by the Company pursuant to Sections 10.09 and 9.16 of the Indenture, check the
box: [_]

          If you want to elect to have only a part of this Security purchased by
the Company pursuant to Sections 10.09 and 9.16 of the Indenture, state the
amount (which must be $1,000 or integral multiples thereof):
$____________________.


Dated: ______           Your Signature: _________________________________
               (Sign exactly as name appears on the other side of this Security)

Signature Guarantee:  ___________________________________
                      (Signature must be guaranteed by a member firm
                      of a national securities exchange or a commercial
                      bank or trust company)


                                       9

 
                                ASSIGNMENT FORM

To assign this Security, fill in the form below: (I) or (we) assign and transfer
this Security to

- --------------------------------------------------------------------------------
                 (Insert assignee's soc. sec. or tax I.D. no.)

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

- --------------------------------------------------------------------------------
             (Print or type assignee's name, address and zip code)

and irrevocably appoint_________________________________________________________
to transfer this Security on the books of the Company. The agent may substitute
another to act for him.

Dated: ______                  Your Signature: _________________________________
               (Sign exactly as name appears on the other side of this Security)



Signature Guarantee:

                                      10

 
                      SCHEDULE OF EXCHANGES OF SECURITIES

     The following exchanges of a part of this Global Note for another Global
Note or for Definitive Securities have been made:



                                              Principal Amount  Signature of
             Amount of          Amount of      of this Global    authorized
            decrease in        increase in        Security       officer of
          Principal Amount  Principal Amount   following such    Trustee or
Date of    of this Global    of this Global       decrease        Security
Exchange      Security          Security       (or increase)     Custodian
- --------  ----------------  ----------------  ----------------  ------------
                                                        





                                      11