Exhibit 4.1

TRUST AGREEMENT

TRUST AGREEMENT, between MS Structured Asset Corp. (the Depositor) and LaSalle Bank National Association (the Trustee), made as of the date set forth in Schedule I attached hereto, which Schedule together with Schedules II and III attached hereto, are made a part hereof.  The terms of the Standard Terms for Trust Agreements, dated April 13, 2006 (the Standard Terms) are, except to the extent otherwise expressly stated, hereby incorporated by reference herein in their entirety with the same force and effect as though set forth herein.  Capitalized terms used herein and not defined shall have the meanings defined in the Standard Terms. References to herein, hereunder, this Trust Agreement and the like shall include the Schedule I attached hereto and the Standard Terms so incorporated by reference.

WHEREAS, the Depositor and the Trustee desire to establish the Trust identified in Schedule I attached hereto (the Trust) for the primary purposes of (i) holding the Underlying Securities, (ii) issuing the Warrants and (iii) issuing the Units;

WHEREAS, the Depositor desires that the respective beneficial interests in the Trust be divided into transferable fractional shares, such shares to be represented by the Units;

WHEREAS, the Depositor desires to appoint the Trustee as trustee of the Trust and the Trustee desires to accept such appointment;

WHEREAS, the Depositor shall transfer, convey and assign to the Trust without recourse, and the Trust shall acquire, all of the Depositors right, title and interest in and under the Underlying Securities and other property identified in Schedule II to the Trust Agreement (the Trust Property); and

WHEREAS, the Trust agrees to acquire the Trust Property specified herein in consideration for Units having an initial Unit Principal Balance and an Initial Notional Amount, as applicable, identified in Schedule I attached hereto, subject to the terms and conditions specified in the Trust Agreement;

NOW THEREFORE, the Depositor hereby appoints the Trustee as trustee hereunder and hereby requests the Trustee to receive the Underlying Securities from the Depositor and to issue in accordance with the instructions of the Depositor Units having the terms specified in Schedule I attached hereto, and the Trustee accepts such appointment and, for itself and its successors and assigns, hereby declares that it shall hold all the estate, right, title and interest in any property contributed to the trust account established hereunder (except property to be applied to the payment or reimbursement of or by the Trustee for any fees or expenses which under the terms hereof is to be so applied) in trust for the benefit of all present and future Holders of the fractional shares of beneficial interest issued hereunder, namely, the Unitholders, and subject to the terms and provisions hereof.





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IN WITNESS WHEREOF, each of the undersigned has executed this instrument as of the date set forth in the Schedule I attached hereto.



| | LASALLE BANK NATIONAL ASSOCIATION |                                                                                                      
| | --------------------------------- | -----------------------------------------------------------------------------------------------------
| |                                   | as Trustee on behalf of the Trust identified in Schedule I hereto, and not in its individual capacity
| |                                   |                                                                                                      
| |                                   |                                                                                                      
| | By:                               | /s/ Andy Streepey                                                                                    
| | Name:                             | Andy Streepey                                                                                        
| | Title:                            | Assistant Vice President                                                                             
| |                                   |                                                                                                      

| | LASALLE BANK NATIONAL ASSOCIATION |                         
| | --------------------------------- | ------------------------
| |                                   | as Warrant Agent        
| |                                   |                         
| |                                   |                         
| | By:                               | /s/ Andy Streepey       
| | Name:                             | Andy Streepey           
| | Title:                            | Assistant Vice President
| |                                   |                         

| | MS STRUCTURED ASSET CORP. |                   
| | ------------------------- | ------------------
| |                           |                   
| |                           |                   
| |                           |                   
| | By:                       | /s/  Madhu Philips
| | Name:                     | Madhu Philips     
| | Title:                    | Vice President    
| |                           |                   



Attachments: Schedules I, II and III







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Schedule I

(Terms of Trust and Units)

|Trust: | SATURNS Trust No. 2006-2
|------ | ------------------------

|Date of Trust Agreement: | August 2, 2006
|------------------------ | --------------

|Trustee and Servicer: | LaSalle Bank National Association
|--------------------- | ---------------------------------

|Units: | The Trust will issue one class of Units.
|------ | ----------------------------------------

|Initial Unit Principal Balance: | 25,510,000
|------------------------------- | ----------

|Issue Price of Units: | 100%
|--------------------- | ----

|Number of Units: | 1,020,400
|---------------- | ---------

|Swap Agreement: | Except as provided in this paragraph, references to a Swap Agreement, a Swap Counterparty and related references in the Standard Terms shall be inapplicable.  For purposes of Sections 2.02, 2.03, 3.02(b), 3.02(c), 3.02(f), 3.04, 3.05, 3.08, 4.02(b), 4.02(c), 7.02, 9.03(b), 9.05, 10.02(a)(x), 10.07, 10.12, 10.13, 11.01, and 12.01 of the Standard Terms as incorporated herein, use of the term Swap Counterparty shall be deemed to be use of the term Warrantholder, use of the term Swap Agreement shall be deemed to be use of the term Warrants and use of the term Swap Termination Payment shall be deemed to be use of the term Warrant Termination Payment.  The list of sections in this paragraph shall not be construed as an exclusive list and where the context so requires, the preceding sentence may apply to additional sections of the
Standard Terms.
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|Call Option / Call Rights: | The Warrants.  Each Warrant issued hereunder represents a Call Option and a Call Right to purchase $1,000 of Unit Principal Balance of the Units.
|-------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------

|Callable Series: | All Units issued hereby are subject to Call Options and Call Rights granted in favor of Warrantholders.  All Units are subject to redemption in the event of a redemption of the Underlying Securities.                                                                                                    
|---------------- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                 | Any Unitholder who receives notice that its Units are being called or redeemed shall tender the applicable Units to the Trustee in accordance with such notice. Any Units subject to call or redemption shall be automatically canceled, and in the case of a call, shall be automatically re-issued to the







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|                         | applicable Warrantholder without further action by the applicable Unitholder, Warrantholder, Trustee or any other person or entity on the date of redemption or the Call Date, as applicable. Any failure to so tender any Unit shall have no force or effect.                                                                                                                                                                      
|------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                         | Upon exercise of Warrants, the Call Options and Call Rights represented by such Warrants shall be automatically canceled. The certificate representing such Warrants shall be deemed to represent the corresponding Units called by the exercise thereof. The Trustee shall distribute the Trust Property to the Warrantholder as specified in Section 1.2 of Schedule III, and upon such distribution such Units shall be canceled.
|First Regular Call Date: | As defined in Schedule III.                                                                                                                                                                                                                                                                                                                                                                                                         

|Minimum Denomination: | $25 and $25 increments in excess thereof. Each $25 of Unit Principal Balance is a Unit.                                                                                                                                              
|--------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                      | The Minimum Denominations shall not prevent transfers of fractional Units if such fractional Units arise due to exercises of the Warrants, redemption of the Underlying Securities or otherwise by operation of this Trust Agreement.

|Cut-off Date: | Closing Date
|------------- | ------------

|Closing Date: | August 2, 2006
|------------- | --------------

|Specified Currency: | United States dollars
|------------------- | ---------------------

|Business Day: | New York, New York and Chicago, Illinois
|------------- | ----------------------------------------

|Interest Rate: | The interest rate on the Units is 7.375% per annum on the basis of a 360 day year consisting of twelve 30 day months.
|-------------- | ---------------------------------------------------------------------------------------------------------------------

|Interest Reset Period: | Not Applicable
|---------------------- | --------------

|Rating: | Baa3 by Moodys
|------- | ---------------
|        | BBB- by S&P    

|Rating Agencies: | Moodys and S&P
|---------------- | ---------------

|Scheduled Final Distribution Date: | March 1, 2098. The Units will have the same final maturity as the Underlying Securities.  The underlying securities are subject to shortening of their maturity in connection with a
|---------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------





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|                                 | Tax Event as described in Schedule II. In the event that the maturity of the underlying securities is shortened, the maturity of the Units will be similarly adjusted.                                                                                       
|-------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Prepayment, Redemption and Call: | The Trust Property is subject to redemption by the Underlying Security Issuer in accordance with the terms of the Underlying Securities and as described in Schedule II.  Any such redemption will cause a redemption of a corresponding portion of the Units

|                         | The Units are subject to call in accordance with the Warrant Terms.                                                                                                                                                                                                                                   
|------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                         | If the Warrants are partially exercised or there is a partial redemption of the Underlying Securities, the Trustee will randomly select Units to be redeemed in full from the proceeds of such a partial redemption or called in full from the proceeds of such partial exercise.                     
|Additional Distribution: | If a Warrantholder exercises Warrants in connection with a tender offer for settlement prior to the First Regular Call Date, each Unit called in connection with such exercise shall receive, in addition to principal and accrued interest, $1.50 per Unit from the proceeds of the Warrant exercise.

|Warrant Terms: | The Warrants represent a Call Option and Call Rights for the Units pursuant to Section 5.13 of the Standard Terms.  Schedule III provides additional Warrant Terms.
|-------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------

|Call Date: | Specified in Schedule III
|---------- | -------------------------

|Call Price: | Specified in Schedule III
|----------- | -------------------------

|Warrant Agent: | LaSalle Bank National Association
|-------------- | ---------------------------------

|Warrantholder: | A holder of Warrants.
|-------------- | ---------------------

|Distribution Dates: | Each March 1 and September 1, or the next succeeding Business Day if such day is not a Business Day, commencing September 1, 2006, and any other date upon which funds are available (including without limitation funds available due to a Trust Wind-Up Event) for distribution in accordance with the terms hereof.
|------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                    | If any payment with respect to the Underlying Securities held by the Trust is not received by the Trustee by 12 noon (New York City time) on a Distribution Date, the corresponding distribution on the Units will not occur until                                                                                    







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|                         | the next Business Day that the Trust is in receipt of proceeds of such payment prior to 12 noon, with no adjustment to the amount distributed or the Record Date.                                                                                                                                                   
|------------------------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Distribution Priorities: | Ordinary Distribution Date Priority:  On any Distribution Date as to which only payments of interest on the Underlying Securities have been received, or to the extent such Distribution Date occurs due to receipt of payments of interest on the Underlying Securities, the Trustee shall apply amounts available:
|                         | FIRST, to the payment of any accrued and unpaid interest on the Units, and                                                                                                                                                                                                                                          
|                         | SECOND, to the payment of any accrued and unpaid Expense Administrators Fee.                                                                                                                                                                                                                                       

| | Exercise of Warrants Priority:                                                                                                                                                                                                                                                                                                                                                                                                                                        
| | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | On any Distribution Date occurring in connection with an exercise of the Warrants, or to the extent such Distribution Date occurs due to the exercise of Warrants, whether in whole or in part, whether or not such exercise results in a Trust Wind-Up Event, the Trustee shall apply amounts available in connection with such exercise (corresponding to the amounts allocable to the aggregate Corresponding Underlying Security Amount related to such exercise):
| | FIRST, to the payment of any accrued and unpaid interest on the Units,                                                                                                                                                                                                                                                                                                                                                                                                
| | SECOND, to the payment of the outstanding principal on the Units being called,                                                                                                                                                                                                                                                                                                                                                                                        
| | THIRD, to the payment of $1.50 on each Unit called as an Additional Distribution, if the related Call Date occurs prior to the First Regular Call Date and occurs in connection with a tender offer for the Underlying Securities,                                                                                                                                                                                                                                    
| | FOURTH, to the payment of any accrued and unpaid Expense Administrators Fee, including the Expense Administrator Make-Whole Amount, if any, and                                                                                                                                                                                                                                                                                                                      
| | FIFTH, to the exercising Warrantholders, to the extent such Warrantholders specified or were deemed to specify that their exercise was in connection with a redemption of or a tender offer for the Underlying Securities.                                                                                                                                                                                                                                            





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|                      | If any exercise of Warrants would result in the Trust not having sufficient funds to pay each of items FIRST through FOURTH in full, notwithstanding any other provision in this Trust Agreement (including the Additional Warrants Terms on Schedule III) or the Warrants, such exercise will be rescinded pursuant to Section 1.1(h) or Section 1.1(i) of Schedule III.                                                                                                                                                                                                                
|--------------------- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Redemptions Priority: | On any Distribution Date occurring in connection with a redemption of the Underlying Securities, to the extent such Distribution Date occurs due to a redemption of the Underlying Securities and only to the extent such Distribution Date does not relate to an exercise of Warrants, whether or not such redemption results in a Trust Wind-Up Event, the Trustee shall apply amounts available in connection with such redemption (excluding the amounts allocable to the aggregate Corresponding Underlying Security Amount related to any exercise of Warrants provided for above):
|                      | FIRST, to the payment of any accrued and unpaid interest on the Units,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|                      | SECOND, to the payment of the outstanding principal on the Units being redeemed,                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
|                      | THIRD, any remaining amounts, if any, to the payment of any accrued and unpaid Expense Administrators Fee, and                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|                      | FOURTH, any remaining amounts, if any, to the Warrantholders, as payment of any Warrant Termination Payment.                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|                      | FIFTH, if there is no Warrant Termination Payment, any remaining amounts, if any, to the payment of an additional distribution amount to the holders of the Units equal to the pro rata portion of the excess of (i) the principal payment received with respect to the underlying securities over (ii) the aggregate unit principal balance on the final scheduled distribution date.                                                                                                                                                                                                   
|                      | Any amortization or other payment by the Underlying Security Issuer on the Underlying Securities shall be treated as a redemption if not otherwise addressed herein.                                                                                                                                                                                                                                                                                                                                                                                                                     

|Other Trust Wind-Up 
      Events Priority: | On any Distribution Date occurring in connection with a Trust Wind-Up Event due to an event or events other than
|------------------------------------------- | ----------------------------------------------------------------------------------------------------------------





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|             | an exercise of Warrants or a redemption of Underlying Securities (or to the extent thereof), the Trustee shall apply amounts available (excluding the amounts allocable to the aggregate Corresponding Underlying Security Amount related to any exercise of Warrants provided for above or the amounts distributable in connection with a redemption as provided for above):
|------------ | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|             | FIRST, to the payment of the claims of the Units such claims being equal to the Unit Principal Balance plus accrued and unpaid interest, if any,                                                                                                                                                                                                                             
|             | SECOND, to the payment of any accrued and unpaid Expense Administrators Fee, and                                                                                                                                                                                                                                                                                            
|             | THIRD, any remaining amounts are paid to the Warrantholders, as payment of any Warrant Termination Payment.                                                                                                                                                                                                                                                                  
|             | FOURTH, if there is no Warrant Termination Payment, any remaining amounts, if any, are paid to the Unitholders of the Units being redeemed, pro rata in proportion to the Unit Principal Balance.                                                                                                                                                                            
|Record Date: | The Record Date for each Distribution Date shall be the third Business Day prior to such Distribution Date, without adjustment for any change in the Distribution Date due to the receipt of funds for distribution after 12 noon, except that in respect of the final Distribution Date, when distributions will be made against presentation of the Units.                 

|Form: | Global security; except Units re-issued in connection with an exercise of Warrants.
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|Depositary: | DTC
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|Trustee Fees and Expenses: | As compensation for and in payment of trust expenses related to its services under the trust agreement other than extraordinary trust expenses, the trustee will receive trustee fees on each date on which the Trust receives a distribution on the underlying securities in an amount equal to $2,000.  The Trustee Fee shall cease to accrue after termination of the Trust.  The Trust is also expected to have ongoing expenses of $5,000 per year for listing fees.  The expense administrator will receive monies for these expenses on each date on which the Trust receives a distribution on the underlying securities in the amount equal to $2,500.  The trigger amount with respect to extraordinary trust expenses
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|                       | for the Trust is $20,000 and the maximum reimbursable amount is $100,000.                                                                                                                                                                                                                                                                                                         
|---------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                       | The Trustee Fee will be paid by the Expense Administrator. Expenses will be reimbursed by the Expense Administrator in accordance with the Expense Administration Agreement.                                                                                                                                                                                                      
|Expense Administrator: | The Trustee will act as Expense Administrator on behalf of the Trust pursuant to an Expense Administration Agreement, dated as of the date of the Trust Agreement (the Expense Administration Agreement), between the Trustee as Expense Administrator (the Expense Administrator) and the Trust.                                                                             
|                       | The Expense Administrator will receive a fee equal to $5,500 payable on each Distribution Date. The Expense Administrator Make-Whole Amount, if any, shall also be considered part of the Expense Administrators fee hereunder and under the Expense Administration Agreement. The Amounts specified in this paragraph are also referred to as the Expense Administrators Fee.
|                       | The Expense Administrator will be responsible for paying the Trustee Fee and reimbursing certain other expenses of the Trust in accordance with the Expense Administration Agreement.                                                                                                                                                                                             

|Expense Administrator
      Make-Whole Amount: | Except to the extent such exercise is in connection with a redemption, if any exercise of Warrants, together with any other Warrants exercised on the same Call Date, is an exercise of less than all Warrants remaining unexercised, the applicable Call Price shall include an amount equal to the present value of a stream of payments equal to $5,500 payable on each scheduled Distribution Date discounted at a rate of 5.0% per annum on the basis of a 360 day year consisting of twelve 30 day months from but excluding the date of such exercise until and including the Scheduled Final Distribution Date, assuming for this purpose that the Trust is not terminated prior to the Scheduled Final Distribution Date, multiplied by the Unit Principal Balance of applicable Units to be called and divided by the Initial Unit Principal Balance of the
Units.
|---------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|Listing: | The Depositor has applied to list the Units on the New York Stock Exchange.
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|ERISA Restrictions: | With respect to the Units, no ERISA restrictions apply on the Closing Date.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
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|                    | In the event that an Exchange Act Reporting Event occurs (as described below), any Unitholder which would constitute a Plan (or a governmental plan or church plan subject to Similar Law) may be given the right to elect a partial sale of the trust property solely as to the portion of the trust property represented by its holding of Units. Each Unitholder which is given notice of such a right and does not make such election, and each fiduciary who makes such determination on its behalf, shall be deemed to have represented and warranted, for so long as it holds the Unit or a beneficial interest therein, that by reason of the application of one or more of the exemptions from the prohibited transactions rules of Section 406 of ERISA and Section 4975 of the Code provided under prohibited transaction class exemption (PTCE) 96-23, 95-60, 91-38, 90-1 or 84-14 or an exemption from a Similar Law prohibition, its holding and subsequent disposition of such Units (and the transactions of the underlying trust, including the holding of the underlying securities) shall not constitute or result in a non-exempt prohibited transaction under Section 406 of ERISA or Section 4975 of the Code or violation of Similar Law. Any Plan (or governmental or church plan subject to Similar Law) acquiring Units after an Exchange Act Reporting Termination (as defined below) will be deemed to have made the representations and warranties set forth in the immediately preceding sentence with respect to its acquisition, holding and disposition of Units for so long as it holds the Units or any beneficial interest therein.

|QIB Restriction: | Not Applicable
|---------------- | --------------

|Termination: | If a Trust Wind-Up Event occurs, any Underlying Securities held by the Trust will be liquidated (by delivery to the Underlying Security Issuer in the event of a redemption, pursuant to the Warrant Terms in the event of an exercise of the Warrants or otherwise by sale thereof).
|------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|Warrant Termination Payment: | Any amounts available for payment pursuant to the Distribution Priorities above as a Warrant Termination Payment.
|---------------------------- | -----------------------------------------------------------------------------------------------------------------

|Tender Offers: | The Trust will not participate in any tender offer for the Underlying Securities and the Trustee will not accept any
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|                             | instructions to the contrary from the Unitholders, except in connection with an exercise by a Warrantholder of Warrants. Any Warrantholder may exercise Warrants in connection with any tender offer for the Underlying Securities and the Trustee may participate in the tender offer on behalf of an exercising Warrantholder.                                                                                                                  
|---------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Depositor Optional Exchange: | Depositor Optional Exchange applies to this Series of Units.                                                                                                                                                                                                                                                                                                                                                                                      
|                             | Section 5.12(c)(i) of the Standard Terms shall be incorporated herein and amended by replacing the dollar figure $25 with $1,000.                                                                                                                                                                                                                                                                                                             
|                             | Pursuant to 5.12(c)(iii), a corresponding portion of the Warrants must consent to such an exchange. The Depositor may satisfy the consent requirement of the preceding sentence by tendering a corresponding portion of Warrants or by delivering consents from a corresponding portion of Warrants (including Warrants it owns) or any combination thereof. Pursuant to 5.12(c)(iii), the Expense Administrator must consent to such an exchange.
|                             | Section 5.12(c)(iv) of the Standard Terms shall be incorporated herein by adding the following to Section 5.12(c): (iv) the Depositor determines that more than 100 holders of the Units, independent of the Trust and each other will remain after such exchange; unless the Depositor determines that such an exchange is otherwise consistent with the restrictions under ERISA and Section 4975 of the Internal Revenue Code of 1986.       

|Optional Exchange 
      Under Warrants: | A Call Notice under Schedule III shall also constitute a notice of and a demand to exchange each of the Units acquired pursuant to the related exercise for a corresponding portion of Trust Property pursuant to Section 5.12(d) of the Standard Terms.  Such notice and demand may only be revoked or rescinded to the extent that the related exercise is revoked or rescinded and the settlement of the Optional Exchange shall be the Exercise Date.
|---------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                                         | Trust Property distributable to a Warrantholder who has acquired Units by exercise in connection with a tender offer or redemption as addressed in Section 1.1(i) of Schedule III, shall be the Trust Property specified in Section 1.1(i) of                                                                                                                                                                                                            







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|                            | Schedule III payable in the manner specified in the Distribution Priority.                                                                                                                                                                                                                                                                                                                                                                                                                  
|--------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Terms of Retained Interest: | Notwithstanding any other provision herein or in the Standard Terms, the Depositor retains the right to receive any and all interest that accrues on the Underlying Securities prior to the Closing Date.  The Depositor will receive such accrued interest on the first Distribution Date (or redemption date or Call Date if earlier) for the Units and such amount shall be paid from the interest payment made with respect to the Underlying Securities on the first Distribution Date.
|                            | The amount of the Retained Interest is $789,127.                                                                                                                                                                                                                                                                                                                                                                                                                                            
|                            | If an Underlying Security Default occurs on or prior to the first Distribution Date and the Depositor does not receive such Retained Interest amount in connection with such Distribution Date, the Depositor will have a claim for such Retained Interest, and will shareproratawith holders of the Units to the extent of such claim in the proceeds from the recovery on the Underlying Securities.                                                                                      

|Sale of Underlying Securities: | In connection with any sale of the Underlying Securities by the Selling Agent pursuant to the terms hereof, if a Warrantholder is not an affiliate of the Selling Agent, the Selling Agent will extend a right of first refusal to each such Warrantholder to purchase the Underlying Securities at the highest bid received by the Selling Agent.                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
|------------------------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                               | If more than one Warrantholder exercises such right of first refusal, Underlying Securities will be sold to each exercising Warrantholder in proportion to the number of Warrants held by such Warrantholder; provided, that if only one Warrantholder exercises such right of first refusal, such Warrantholder shall be entitled to purchase any or all of the Underlying Securities to be sold by the Selling Agent. If only one Warrantholder exercises its right of first refusal, the selling agent may deliver the underlying securities directly to the warrantholder and forego obtaining bids for the underlying securities if and to the extent that the warrantholder agrees to pay an amount equal to the amounts referred to in clauses FIRST and SECOND under Other Trust Wind-Up Events Priority.

|Selling Agent: | Morgan Stanley & Co. Incorporated.
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|Rating Agency Condition: | The definition of Rating Agencies Condition in the Standard Terms shall not apply and the following shall apply instead:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|------------------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                         | Rating Agency Condition: With respect to any specified action or determination, means receipt of (i) written confirmation by Moodys (if the Units are rated by Moodys, for so long as the Units are outstanding and rated by Moodys) and (ii) written confirmation by S&P (if the Units are rated by S&P, for so long as the Units are outstanding and rated by S&P), that such specified action or determination will not result in the reduction or withdrawal of their then-current ratings on the Units. Such confirmation may relate either to a specified transaction or may be a confirmation with respect to any future transactions which comply with generally applicable conditions published by the applicable rating agency.

|Amendments: | Notwithstanding anything to the contrary in the Standard Terms, amendments to the Warrants and to Schedule III hereof shall be governed by Section 7.02 of the Standard Terms.  For the avoidance of doubt, the terms of the Warrant and Schedule III may not be amended without consent of all Warrantholders.                                                                                                                                                                                             
|----------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|            | Notwithstanding the foregoing, the Depositor and Trustee may agree to amend and restate this Trust Agreement from time to time regarding the Warrants, without consent of the Warrantholders, to provide that Warrantholders shall be entitled to call and receive directly the underlying Trust Property corresponding to the Units that would have been redeemed following an exercise of Warrants, and not to call the Units. For the avoidance of doubt, such amendment shall not affect the Call Price.

|Additional Terms: | The Definition of Corporate Trust Office in Section 1.01 of the Standard Terms is modified by deleting the words Asset-Backed and inserting the word Global in lieu thereof.                         
|----------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|                  | The Definition of Disqualified Swap Counterparty in Section 1.01 of the Standard Terms is modified by deleting the words swap counterparty and inserting the words Swap Counterparty in lieu thereof.
|                  | Section 3.06 is modified by deleting the words shall invest funds held in any Account in the Permitted Investments                                                                                      









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|                        | specified in clause (i) of the definition thereof upon receipt of such funds. Such funds shall be invested in Permitted Investments that will mature at least one Business Day prior to the next Distribution Date and inserting the words hold the funds in any Account univested in lieu thereof.                                                                                                                                                                                                                                                                                                                                                                                          
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|                        | Section 5.10(b) is modified by deleting the word compensating and inserting the word compensation in lieu thereof.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
|                        | Section 10.01(d) is modified by inserting the words that the depositor and Trust are subject to the reporting obligations of the Exchange Act following the words each year in both instances.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|                        | Section 12.10 of the Standard Terms shall apply as modified below to include the Warrantholders:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|                        | Prior to the date that is one year and one day after all distributions in respect of the Units have been made, none of the Trustee, the Trust, the Depositor or the Warrantholders shall take any action, institute any proceeding, join in any action or proceeding or otherwise cause any action or proceeding against any of the others under the United States Bankruptcy Code or any other liquidations, insolvency, bankruptcy, moratorium, reorganization or similar law (Insolvency Law) applicable to any of them, now or hereafter in effect, or which would be reasonably likely to cause any of the others to be subject to, or seek the protection of, any such Insolvency Law.
|Compliance Certificate: | The Trustee will provide to the Depositor an appropriate compliance certificate in connection with the annual report of the Depositor and/or the Trust and, upon the reasonable request of the Depositor, at other times, with respect to the Trustee's compliance with its duties and obligations under this Trust Agreement.  A form of such certification is attached as Annex A.                                                                                                                                                                                                                                                                                                            

|Officers Certificate: | The Trustee will provide to the Depositor an appropriate officers certificate (or other such form that may be reasonably requested by the Depositor from the Trustee to conform to the requirements of Regulation AB of the Securities Act of 1933) by not later than March 15th of each year that the Trust is subject to the reporting requirements of the Exchange Act, starting in the year following the year
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|                          | of issuance of the related Units, that: (i) a review of the activities of the Trustee during the preceding calendar year and of performance under this Trust Agreement has been made under such officers supervision; and (ii) to the best of such officers knowledge, based on such review, the Trustee has fulfilled all of its obligations in all material respects under this Trust Agreement for such year, or, if there has been a default in the fulfillment of any such obligation in any material respect, specifying each such default known to such officer and the nature and status of such default, including the steps being taken by the trustee to remedy such default.
|------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Assessment of Compliance: | On or prior to March 15th of each year that the Trust is subject to the reporting requirements of the Exchange Act, commencing with the year following the year of issuance of the related Units, the Trustee will be required to deliver to the Depositor an Assessment of Compliance (or other such form that may be reasonably requested by the Depositor from the Trustee to conform to the requirements of Regulation AB of the Securities Act of 1933) that contains the following:                                                                                                                                                                                                 

| | (1) | a statement of the Trustees responsibility for assessing compliance with the servicing criteria applicable to it under this Trust Agreement;
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------

| | (2) | a statement that the Trustee used the criteria in Item 1122(d) of Regulation AB (17 CFR 229.1122) to assess compliance with the applicable servicing criteria under this Trust Agreement;
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | (3) | the Trustees assessment of compliance with the applicable servicing criteria during and as of the end of the prior calendar year, setting forth any material instance of noncompliance identified by the Trustee; and
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| | (4)                                                                                                                                                                                 | a statement that a registered public accounting firm has issued an attestation report on the Trustees assessment of compliance with the applicable servicing criteria under the trust agreement during and as of the end of the prior calendar year.
| | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | The Trustee will also be required to simultaneously deliver an attestation report of a registered public accounting firm, prepared in accordance with the standards for attestation







| | I-13 | 
| | ---- | 





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|                                     | engagements issued or adopted by the Public Company Accounting Oversight Board, that expresses an opinion, or states that an opinion cannot be expressed, concerning the Trustees assessment of compliance with the applicable servicing criteria under this Trust Agreement.                                                
|------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Additional Reports to the Depositor: | Upon the reasonable request of the Depositor, the Trustee shall deliver to the Depositor other reports with respect to the Trustee's compliance with its duties and obligations under this Trust Agreement as may be deemed reasonably necessary by the Depositor to maintain compliance with applicable laws and regulations.

|Additional Reports to Unitholders: | In addition to the provisions of Section 4.02 of the Standard Terms and in accordance with the cashflow model and based on the underlying asset information provided at the Closing Date, the Trustee will perform distribution calculations and prepare a semi-annual statement to Unitholders detailing the payments received and the activity on the underlying asset(s) during the each such six-month period.  In performing these reporting obligations to the Unitholders under this Trust Agreement, the Trustee may rely on the information provided to it by the Depositor on the Closing Date.  For the purposes of this provision only, the Trustee will not be required to recompute, recalculate or verify the information provided to it by the Depositor.
|---------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|Distribution Reports: | The Depositor, or Trustee, if permitted under the applicable rules and regulations of the Securities Exchange Commission and the procedures with respect thereto have been mutually agreed upon by the Depositor and the Trustee, shall file each distribution report on Form 10-D within 15 days of the related Distribution Date.  Each such distribution report or Form 10-D shall contain text substantially similar to the following:
|--------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

The underlying security issuer, as applicable, is subject to the informational requirements of the Exchange Act.  The underlying security issuer, as applicable, currently files reports, proxy statements and other information with the SEC. Those periodic reports, current reports and other reports and other information can be inspected and copied at the public reference facilities maintained by the SEC at Room 1024, 450 Fifth Street, N.W., Washington, D.C. 20549. Copies of those materials can be obtained by making a written request to the SEC, Public Reference





| | I-14 | 
| | ---- | 





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|             | Section, 450 Fifth Street, N.W., Washington, D.C. 20549, at prescribed rates. The SEC also maintains a website on the internet at http://www.sec.gov at which users can view and download copies of reports, proxy, information statements and other information filed electronically. In addition, those reports and other information may also be obtained from the underlying security issuer by making a request to the underlying security issuer.
|------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Fiscal Year: | The fiscal year of the Trust shall be the calendar year and end each December 31.                                                                                                                                                                                                                                                                                                                                                                      





| | I-15 | 
| | ---- | 





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ANNEX A TO SCHEDULE I



LASALLE BANK NATIONAL ASSOCIATION



ABS ANNUAL REPORT BACKUP CERTIFICATION



In connection with the preparation and delivery of the annual report on Form    10-K of MS Structured Asset Corp. for the fiscal year ending December 31, and the certifications given on behalf of SATURNS Trust  No. 2006-2 with respect thereto, the undersigned hereby certifies that he is a duly elected [] of LaSalle Bank National Association and further certifies in his capacity as such as follows:

1.LaSalle Bank National Association has prepared all distribution reports with respect to each distribution date for SATURNS Trust No. 2006-2 and, if permitted under the applicable rules and regulations of the Securities Exchange Commission and the procedures with respect thereto that have been mutually agreed upon by MS Structured Asset Corp. and LaSalle Bank National Association, has filed a copy of such reports on Form 10-D during the fiscal year as described on Exhibit A hereto.

2.I have reviewed all reports on Form 10-D containing distribution reports filed in respect of periods included in the fiscal year covered by the annual report of MS Structured Asset Corp. on behalf of SATURNS Trust 2006-2;

3.I am familiar with the operations of LaSalle Bank National Association with respect to the SATURNS program and SATURNS Trust 2006-2 and the requirement imposed by the trust agreement;

4.Based on my knowledge, the information in the distribution reports, taken as a whole, does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading as of the last day of the period covered by the annual report;

5.Based on my knowledge, the information required to be provided under each trust agreement, for inclusion in these reports, is included in these reports;

6.Based on my knowledge, and except as disclosed in the reports, the trustee has fulfilled its obligations, including any servicing obligations, under the trust agreement.

7.Based on my knowledge, and except as disclosed in the reports, there are no material legal proceedings pending involving the trust or LaSalle Bank National Association as trustee of the trust.



By:

Name:
Title:
Date:









| | I-16 | 
| | ---- | 





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EXHIBIT A TO ANNEX A TO SCHEDULE I





|SATURNS Trust No.: | Closing Date | Collateral             | Payment Dates           | Form 10-D Filing Dates (Not Trust Agreement Filings in connection with Closing Date)
For FY [    ]
|------------------ | ------------ | ---------------------- | ----------------------- | --------------------------------------------------------------------------------------------------
|2006-2             | 8/2/06       | Cummins Engine Company | March 1 and September 1 |                                                                                                   
|                   |              |                        |                         |                                                                                                   
|                   |              |                        |                         |                                                                                                   
|                   |              |                        |                         |                                                                                                   
|                   |              |                        |                         |                                                                                                   
|                   |              |                        |                         |                                                                                                   
|                   |              |                        |                         |                                                                                                   
|                   |              |                        |                         |                                                                                                   
|                   |              |                        |                         |                                                                                                   
|                   |              |                        |                         |                                                                                                   
|                   |              |                        |                         |                                                                                                   
|                   |              |                        |                         |                                                                                                   
|                   |              |                        |                         |                                                                                                   
|                   |              |                        |                         |                                                                                                   







| | I-17 | 
| | ---- | 





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Schedule II

(Terms of Trust Property)

|Underlying Securities: | Cummins Engine Company 5.65% Debentures due March 1, 2098
|---------------------- | ---------------------------------------------------------

|Underlying Security Issuer: | Cummins Inc. (formerly known as Cummins Engine Company, Inc.)
|--------------------------- | -------------------------------------------------------------

|Principal Amount: | $33,500,000
|----------------- | -----------

|Underlying Security Rate: | 5.65%
|------------------------- | -----

|Credit Ratings: | Baa3 by Moodys
|--------------- | ---------------
|                | BBB- by S&P    

|Listing: | None
|-------- | ----

|Underlying Security 
      Issuance Agreement: | An indenture dated as of March 1, 1986 and supplemented as of September 18, 1990 between the Underlying Security Issuer and JPMorgan Chase Bank (as successor to The Chase Manhattan Bank, N.A.) as trustee (the Underlying Security Trustee.), as supplemented and amended from time to time.
|---------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|Underlying security
      disclosure documents: | The prospectus dated December 19, 1997 and the prospectus supplement dated February 26, 1998, describing the underlying securities
|----------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------

|Form: | Global
|----- | ------



|Currency of
      Denomination: | United States dollars
|------------------------------- | ---------------------

|Acquisition Price by Trust: | $25,323,059
|--------------------------- | -----------

|Underlying Security 
      Payment Date: | Each March 1 and September 1
|---------------------------------------- | ----------------------------

|Original Issue Date: | The Underlying Securities were issued on or about March 3, 1998 under the Securities Act of 1933 in a principal amount of $165,000,000.
|-------------------- | ---------------------------------------------------------------------------------------------------------------------------------------

|Maturity Date: | March 1, 2098.   The underlying security issuer may shorten the maturity of the underlying securities by notice provided not more than 60 days after the occurrence of a
|-------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------





| |  | 
| |  | 





---



|                    | Tax Event as such term is defined in the Underlying Security Disclosure Documents.
|------------------- | ----------------------------------------------------------------------------------
|Sinking Fund Terms: | Not Applicable                                                                    

|Redemption Terms: | As described in the Underlying Security disclosure documents the Underlying Securities may be redeemed as a whole or in part at any time at the option of the Underlying Security Issuer.
|----------------- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|CUSIP No.:/ISIN No. | 231021 AK 2
|------------------- | -----------

|Underlying Security Trustee: | JPMorgan Chase Bank (as successor to The Chase Manhattan Bank, N.A.).
|---------------------------- | ---------------------------------------------------------------------



| | II-2 | 
| | ---- | 





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Schedule III

ADDITIONAL WARRANT TERMS



ARTICLE I

EXERCISE OF WARRANTS



| | Section 1.1 | Principal Terms.
| | ----------- | ----------------
| | (a)         | Call Price.     
| |             |                 

The Call Price per Warrant is the sum of (i)(a) $1,000 (corresponding to 40 $25.00 Units) or (b) if such exercise is in connection with a tender offer for Underlying Securities held by the Trust for settlement prior to the First Regular Call Date, $1,060 ($26.50 per Unit), (ii) accrued and unpaid interest on the applicable Units through the related Call Date and (iii) the applicable Expense Administrator Make-Whole Amount.  For the avoidance of doubt, such amounts shall include accruals on deferred amounts.

| | (b) | Call Dates.
| | --- | -----------

A Warrantholder may designate as a Call Date (i) any Business Day from and including 9:00 a.m. New York time on the First Regular Call Date, to and including 4:00 p.m. New York time on the Expiration Date and (ii) any Business Day prior to the First Regular Call Date as a Call Date, but only if notice of redemption or tender offer has been delivered by the Underlying Security Issuer with regard to the Underlying Securities held by the Trust.

Except as otherwise provided in this paragraph, a Warrantholder shall give notice of its intention to exercise Warrants and related designation of a Call Date on not less than 15 or more than 60-calendar days notice.  If the Underlying Security Issuer has given notice of redemption with respect to the Underlying Securities or if a tender offer is outstanding for the Underlying Securities, a Warrantholder may give notice of its intention to exercise Warrants and related designation of a Call Date with two Business Days notice prior to the Call Date but no later than 4:00 p.m. New York City time on the second Business Day immediately preceding the then-scheduled settlement of the tender offer or redemption.

| | (c) | Expiration Date.  March 1, 2093.                                                                                                                                
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------
| | (d) | First Regular Call Date.  August 2, 2011.                                                                                                                       
| | (e) | Corresponding Underlying Security Amount. The product of (x) the applicable number of Warrants, (y) $1,000 and (z) the Security Factor.                         
| | (f) | Security Factor. The aggregate principal amount of Underlying Securities initially held by the Trust divided by the Initial Unit Principal Balance of the Units.
| | (g) | Call Notice.                                                                                                                                                    

Each exercising Warrantholder shall deliver a notice in the form of Exhibit B to the Trustee and the Warrant Agent, including the certification of solvency specified therein, prior to





| |  | 
| |  | 





---





the Call Date.  Each such Call Notice must specify exercise of either (i) all Warrants the notifying Warrantholder owns or (ii) at least 250 Warrants.

A Call Notice also constitutes a notice of exchange of the Units to be obtained by a Warrantholder as a result of such exercise for Trust Property pursuant to Section 5.12(d) of the Standard Terms.

| | (h) | Automatic Rescission of Exercise.
| | --- | ---------------------------------

Delivery of a Call Notice does not give rise to an obligation on the part of the Warrantholder to pay the Call Price.  With respect to each Warrant exercised, if by 4 p.m. New York time on the Business Day prior to the Call Date the applicable Warrantholder has not paid the applicable Call Price for a Warrant to the Warrant Agent, except to the extent the Call Notice relates to a tender offer or redemption of Underlying Securities addressed in Section 1.1(i) below, then the exercise of the applicable Warrant shall be automatically rescinded, the applicable Warrant shall be reinstated, no Call Date with respect thereto shall be deemed to have occurred and no Call Notice deemed given, and the applicable Warrantholder shall be entitled to exercise such reinstated Warrants in the future.

| | (i) | Tender Offer and Redemption.
| | --- | ----------------------------

Each Warrantholder shall specify in its Call Notice if its exercise is in connection with a redemption or tender offer if the specified Call Date will occur on or after the First Regular Call Date.  Any Warrantholder giving a Call Notice with respect to a Call Date prior to the First Regular Call Date shall be deemed to specify that it is exercising its Warrants in connection with a tender offer or redemption.

A Warrantholder specifying or deemed to specify that it is exercising its Warrants in connection with a tender offer for or a redemption of the Underlying Securities shall be deemed to instruct the Trustee to tender the applicable Corresponding Underlying Security Amount in connection with such redemption or tender offer.

To the extent Underlying Securities corresponding to such a deemed instruction to tender are not accepted by the tender offeror or Underlying Security Issuer and paid for in accordance with the terms of the tender offer or redemption, a corresponding number of Warrants shall be reinstated, with exercise thereof rescinded, no Call Date with respect thereto shall be deemed to have occurred and no Call Notice deemed given, with the number of such reinstated Warrants to be allocated among the Warrantholders specifying or deemed to specify exercise in connection with such tender offer or redemption in proportion to the number of Warrants initially so exercised by each, and each such Warrantholder shall be entitled to exercise such reinstated Warrants in the future.  The Warrant Agent shall determine such allocation by notice to the applicable Warrantholders.

A Warrantholder specifying or deemed to specify that it is exercising its Warrants in connection with a tender offer for or a redemption of the Underlying Securities, to the extent such exercise is not rescinded, shall be entitled to Trust Property in an amount equal to the proceeds of the tender offer or redemption allocable to the applicable Corresponding Underlying Security Amount in excess of the aggregate Call Price for the applicable number of Warrants.





| | III-2 | 
| | ----- | 





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If the Warrant Agent receives a Call Notice or Call Notices with respect to Warrants with an aggregate Corresponding Underlying Security Amount that is less than the aggregate principal amount of Underlying Securities held by the Trust subject to redemption, the Warrant Agent shall determine by notice to the applicable Warrantholders which Warrants are to be terminated in connection with such redemption by allocating the termination of Warrantsprorataamong remaining Warrantholders (including exercising Warrantholders holding unexercised Warrants) in proportion to their holdings of unexercised Warrants.  Warrants so terminated shall be entitled to the applicable Warrant Termination Payment.

If the Warrant Agent receives no Call Notices with respect to a redemption of Underlying Securities, a number of Warrants equal to the aggregate principal amount of Underlying Securities held by the Trust that are redeemed divided by the product of (x) the Security Factor and (y) $1,000, shall be terminated.  The Warrant Agent shall determine by notice to the applicable Warrantholders which Warrants are to be terminated by allocating such termination among Warrantholders in proportion to the number of Warrants held by each.  Warrants so terminated shall be entitled to the applicable Warrant Termination Payment.

Whenever the Warrant Agent is obligated to allocate the termination of Warrantsprorata, and this allocation would result in some Warrants being partially terminated, the Warrant Agent shall randomly re-allocate terminations to the extent necessary to ensure that only whole Warrants are terminated or such that only one Warrant is partially terminated.

| | (j) | Payment of Call Price.
| | --- | ----------------------

Except with respect to Warrants exercised or deemed exercised in connection with a redemption of or tender offer for the Underlying Securities, each exercising Warrantholder shall deposit the applicable Call Price for all Warrants exercised by it with the Warrant Agent no later than the Business Day prior to settlement of exercise.

The Warrant Agent shall notify the Trustee immediately upon its receipt of payment of the applicable Call Price.  The Warrant Agent shall transfer the amount of any paid Call Price to the Trustee in immediately available funds, for deposit in the Unit Account and application pursuant to the other terms of this Trust Agreement no later than 4 p.m. New York time on the Business Day preceding the Call Date and, pending such transfer, shall hold such amount for the benefit of the Warrantholder in a segregated trust account.

| | (k) | Appointment of Warrant Agent.
| | --- | -----------------------------

The Depositor hereby appoints the Warrant Agent as agent to (i) receive for the benefit of the Warrantholders pending payment to the Trust in connection with exercise of the Warrants from time to time, the Call Price amounts paid to the Warrant Agent, (ii) receive for the benefit of the Warrantholders, in connection with exercise of the Warrants from time to time, the Units deemed tendered to the Trust pursuant to Section 1.2, and the Trust Property received pursuant to the related Optional Exchange pending delivery thereof to the relevant Warrantholders and (iii) otherwise act on behalf of and for the benefit of the Trust, the Unitholders and the Warrantholders for purposes of this Agreement, and the Warrant Agent accepts such appointment for itself and its successors and assigns, subject to the terms and provisions hereof.





| | III-3 | 
| | ----- | 





---







| | (l) | Amendment of Trust Agreement
| | --- | ----------------------------

The Units are currently subject to Call Options and Call Rights granted in favor of the Warrantholders.  Notwithstanding any other provision of this Trust Agreement, the Depositor and Trustee may agree to amend and restate this Trust Agreement from time to time regarding the Warrants, without the consent of the Warrantholders, to provide that Warrantholders shall be entitled to call and receive directly the underlying Trust Property corresponding to the Units that would have been redeemed following an exercise of Warrants, and not to call the Units.  For the avoidance of doubt, such amendment shall not affect the Call Price.  Similarly, nothing in the above should be understood as exempting such amendment from the application of Section 12.01(d) of the Standard Terms for Trust Agreements.

Section 1.2Delivery of Units.  As soon as practicable after each surrender of Warrants in whole or in part on the Call Date and upon satisfaction of all other requirements described in the Warrants and in Section 1.1 hereof, the Warrant Agent shall instruct the Trustee to confirm that the transfer specified under the Callable Series provisions of Schedule I has occurred and to cause a distribution of Trust Property to the Warrantholder as an Optional Exchange taking into account Section 1.1(i) above, if applicable.  A surrender of the Warrants shall be deemed to be a simultaneous surrender of the Units acquired in exchange therefor.

If such exercise is in part only, the Warrant Agent shall instruct the Trustee to authenticate new Warrants of like tenor, representing the outstanding Warrants of the Warrantholder and the Warrant Agent shall deliver such Warrants to the Warrantholder.

In each case, the Trustee shall act in accordance with such instructions.

Section 1.3Cancellation and Destruction of Warrants.  All Warrants surrendered to the Warrant Agent for the purpose of exercise (in whole or in part) pursuant to Section 1.1 and actually exercised, or for the purpose of transfer or exchange pursuant to Article III, shall be cancelled by the Warrant Agent, and no Warrant (other than that reflecting any such transfer or exchange) shall be issued in lieu thereof. The Warrant Agent shall destroy all cancelled Warrants.

Section 1.4No Rights as Holder of Units Conferred by Warrants.  Each Warrantholder agrees that the Warrants do not represent an ownership interest in the Trust or its assets and that none of them shall treat the Warrants as an ownership interest in the Trust for any purpose.

ARTICLE II

RESTRICTIONS ON TRANSFER



Section 2.1Restrictive Legends.  Each Warrant (including each Warrant issued upon the transfer of any Warrant) shall be issued with a legend in substantially the form contained in Exhibit A hereto.

Section 2.2Notice of Proposed Transfer.  Prior to any transfer of any Warrant or portion thereof, the Warrantholder will give 5 Business Days (or such lesser period acceptable to the Warrant Agent) prior written notice to the Warrant Agent and the Depositor of such Warrantholders intention to effect such transfer.





| | III-4 | 
| | ----- | 





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ARTICLE III

REGISTRATION AND TRANSFER OF WARRANTS, ETC.



Section 3.1Warrant Register; Ownership of Warrants.  The Warrant Agent will keep a register in which the Warrant Agent will provide for the registration of Warrants and the registration of transfers of Warrants representing numbers of Warrants. The Trustee and the Warrant Agent may treat the Person in whose name any Warrant is registered on such register as the owner thereof for all purposes, and the Trustee and the Warrant Agent shall not be affected by any notice to the contrary.  The Warrant Agent shall make such adjustments to its records and the register as shall be necessary to reflect terminations and exercise of Warrants.

Section 3.2Transfer and Exchange of Warrants.  (a) No Warrant may be offered, resold, assigned or otherwise transferred (including by pledge or hypothecation) at any time except in accordance with this Section 3.2.

(1)Any purchaser or transferee of the Warrants shall represent that it is (A) a qualified institutional buyer as defined in Rule 144A under the Securities Act that (1) is not a broker-dealer that owns and invests on a discretionary basis less than $25 million in securities of issuers that are not affiliated persons of the dealer and (2) is not a plan referred to in paragraph (a)(1)(i)(D) or (a)(1)(i)(E) of Rule 144A or a trust fund referred to in paragraph (a)(1)(i)(F) of Rule 144A that holds the assets of such a plan, if investment decisions with respect to the plan are made by the beneficiaries of the plan, (B) aware that the sale or transfer of the Warrants to it may be made to it in reliance on the exemption from registration provided by Rule 144A under the Securities Act and
(C) acquiring the Warrants for its own account or for one or more accounts, each of which is a qualified institutional buyer, and as to each of which the purchaser or transferee exercises sole investment discretion, and in each case in accordance with any applicable securities laws of any state of the United States and other jurisdictions.

(2)Warrants may not be purchased, held by or transferred to any Person unless that Person is not a Plan, is not a governmental or other plan subject to restrictions substantially similar to Title I of ERISA or Section 4975 of the Code, and is not acquiring the Warrants with the assets of any such Plan or other plan.  Each Person who acquires any Warrant, and each fiduciary which causes any such Person to acquire any Warrant, in its individual as well as its fiduciary capacity, will be deemed by such purchase, holding or acquisition, on each date on which the Warrant is held by such person, to have represented that it is not a Plan or any governmental or other plan subject to requirements substantially similar to Title I of ERISA or Section 4975 of the Code and is not using the assets of
any such Plan to purchase those Warrants.  Each Person that acquires a Warrant, and each fiduciary who causes a person to acquire a Warrant, in its individual as well as its fiduciary capacity, agrees to indemnify and hold harmless the Depositor, the Trustee, the Warrant Agent, MS&Co., each Distribution Participant and their respective affiliates from any cost, damages, loss or expense, incurred by them as a result of the representations contained in this Section 3.2(a)(2) not being true.

(b)Upon surrender of any Warrant for registration of transfer or for exchange to the Warrant Agent, the Warrant Agent shall (subject to compliance with Section 3.2(a)) promptly execute and deliver, and cause the Trustee, on behalf of the Trust, to execute and deliver, in exchange therefor, a new Warrant of like tenor and evidencing a like number of Warrants, in the





| | III-5 | 
| | ----- | 





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name of such Warrantholder or as such Warrantholder (upon payment by such Warrantholder of any applicable transfer taxes or government charges) may direct; provided that as a condition precedent for transferring the Warrants, the prospective transferee shall deliver to the Trustee and the Depositor an executed copy of the Transfer Letter in the form of Exhibit C hereto.

(c)Any purported transfer of the Warrants (or any interest therein) in violation of Section 3.2(a)(1) or Section 3.2(a)(2) hereof shall be voidab initioand the purported transferee in such transfer shall not be recognized by any Person as a holder of such Warrants for any purpose.  The Depositor and the Trustee shall each have the power to sell the Warrants (or any interest therein) of a purported Warrantholder (or owner of any interest therein) who acquired its interest in violation of Section 3.2(a)(1) or Section 3.2(a)(2) or who continues to hold Warrants in violation of Section 3.2(a)(2).

Section 3.3Replacement of Warrants.  Upon receipt of evidence reasonably satisfactory to the Warrant Agent of the loss, theft, destruction or mutilation of any Warrant and, in the case of any such loss, theft or destruction of any Warrant, upon delivery of an indemnity bond in such reasonable amount as the Warrant Agent may determine, or, in the case of any such mutilation, upon the surrender of such Warrant for cancellation to the Warrant Agent, the Warrant Agent shall execute and deliver, and cause the Trustee, on behalf of the Trust, to execute and deliver, in lieu thereof, a new Warrant of like tenor bearing a number not contemporaneously outstanding.

| | Section 3.4 | Execution and Delivery of Warrants by Trustee; Authentication.
| | ----------- | --------------------------------------------------------------

The Trustee agrees and acknowledges that it will, concurrently with the receipt by it of the Underlying Securities and the execution, authentication and delivery of Units, cause to be executed, authenticated and delivered to or upon the order of the Depositor, Warrants duly executed and authenticated by or on behalf of the Trustee.

The Trustee, on behalf of the Trust, hereby agrees (subject to compliance with Article II) to execute and deliver such new Warrants issued in accordance with Section 1.2 or this Article III as the Warrant Agent shall request in accordance herewith.

Upon surrender for registration of transfer of any Warrant at the office or agency of the Trustee, if the requirements of Section 8-401 of the Uniform Commercial Code are met to the Trustees satisfaction, and subject to the transfer restrictions set forth in this Schedule III, the Trustee shall execute, authenticate and deliver, in the name of the designated transferee or transferees, one or more new Warrants.  All transfers of Warrants are subject to the approval of the Trustee and the Trustee shall not register any transfer of Warrants if such transfer would violate any provision of the Trust Agreement.

Section 3.5Federal Income Tax Matters.  Each Warrantholder agrees to treat each Warrant as a call option for federal income tax purposes.





| | III-6 | 
| | ----- | 





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ARTICLE IV

WARRANT AGENT



Section 4.1Limitation on Liability.  The Warrant Agent shall be protected and shall incur no liability for or in respect of any action taken, suffered or omitted by it in connection with its administration of the Warrants in reliance upon any instrument of assignment or transfer, power of attorney, endorsement, affidavit, letter, notice, direction, consent, certificate, statement or other paper or document in good faith believed by it to be genuine and to be signed, executed and, where necessary, verified and acknowledged, by the proper Person or Persons.  The Warrant Agent and any director, officer, employee or agent of the Warrant Agent shall be indemnified by the Depositor to the same extent that the Trustee is indemnified by the Depositor pursuant to Section 10.05(b) of the
Standard Terms.

Section 4.2Duties of Warrant Agent.  The Warrant Agent undertakes only the specific duties and obligations imposed hereunder upon the following terms and conditions, by all of which the Depositor, the Trust, the Trustee and each Warrantholder shall be bound:

(a)The Warrant Agent may consult with legal counsel (who may be legal counsel for the Depositor), and the opinion of such counsel shall be full and complete authorization and protection to the Warrant Agent as to any action taken or omitted by it in good faith and in accordance with such opinion, provided the Warrant Agent shall have exercised reasonable care in the selection by it of such counsel.

(b)Whenever in the performance of its duties hereunder, the Warrant Agent shall deem it necessary or desirable that any fact or matter be proved or established by the Depositor or the Trustee prior to taking or suffering any action hereunder, such fact or matter may be deemed to be conclusively proved and established by a Depositor Order or a certificate signed by a Responsible Officer of the Trustee and delivered to the Warrant Agent; and such certificate shall be full authorization to the Warrant Agent for any action taken or suffered in good faith by it hereunder in reliance upon such certificate.

(c)The Warrant Agent shall be liable hereunder only for its own negligence, willful misconduct or bad faith.

(d)The Warrant Agent shall not be liable for or by reason of any of the statements of fact or recitals contained herein or be required to verify the same, but all such statements and recitals are and shall be deemed to have been made by the Trust and the Depositor only.

(e)The Warrant Agent shall not have any responsibility in respect of and makes no representation as to the validity of the Warrants or the execution and delivery thereof (except the due execution hereof by the Warrant Agent); nor shall it be responsible for any breach by the Trust of any covenant or condition contained in the Warrants; nor shall it by any act thereunder be deemed to make any representation or warranty as to the Units to be purchased thereunder.

(f)The Warrant Agent is hereby authorized and directed to accept instructions with respect to the performance of its duties hereunder from the Chairman of the Board, the Chief Executive Officer, Chief Financial Officer, Chief Operating Officer, President, a Vice President,





| | III-7 | 
| | ----- | 





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a Senior Vice President, a Managing Director, its Treasurer, an Assistant Treasurer, its Secretary or an Assistant Secretary of the Depositor, and any Responsible Officer of the Trustee, and to apply to such officers for advice or instructions in connection with its duties, and it shall not be liable for any action taken or suffered to be taken by it in good faith in accordance with instructions of any such officer.

(g)The Warrant Agent and any shareholder, director, officer or employee of the Warrant Agent may buy, sell or deal in any of the Warrants or other securities of the Trust or otherwise act as fully and freely as though it were not Warrant Agent hereunder, so long as such persons do so in full compliance with all applicable laws. Nothing herein shall preclude the Warrant Agent from acting in any other capacity for the Trust, the Depositor or for any other legal entity.

(h)The Warrant Agent may execute and exercise any of the rights or powers hereby vested in it or perform any duty hereunder either itself or by or through its attorneys or agents.

(i)The Warrant Agent shall act solely as the agent of the Trust, the Unitholders and the Warrantholders hereunder as respectively set forth herein. The Warrant Agent shall not be liable except for the failure to perform such duties as are specifically set forth herein, and no implied covenants or obligations shall be read into the Warrants against the Warrant Agent, whose duties shall be determined solely by the express provisions thereof. The Warrant Agent shall not be deemed to be a fiduciary.

(j)The Warrant Agent shall not be responsible for any failure on the part of the Trustee to comply with any of its covenants and obligations contained herein.

(k)The Warrant Agent shall not be required to expend or risk its own funds or otherwise incur financial liability in the performance of its duties hereunder and shall not be under any obligation or duty to institute, appear in or defend any action, suit or legal proceeding in respect hereof, in each case unless first indemnified to its satisfaction, but this provision shall not affect the power of the Warrant Agent to take such action as the Warrant Agent may consider proper, whether with or without such indemnity. The Warrant Agent shall promptly notify the Depositor and the Trustee in writing of any claim made or action, suit or proceeding instituted against it arising out of or in connection with the Warrants.

(l)The Trustee will perform, execute, acknowledge and deliver or cause to be performed, executed, acknowledged and delivered all such further acts, instruments and assurances as may be required by the Warrant Agent in order to enable it to carry out or perform its duties hereunder.

Section 4.3Change of Warrant Agent.  The Warrant Agent may resign and be discharged from its duties hereunder upon thirty (30) days notice in writing mailed to the Depositor and the Trustee by registered or certified mail, and to the Warrantholders by first-class mail at the expense of the Depositor; provided that no such resignation or discharge shall become effective until a successor Warrant Agent shall have been appointed hereunder. The Depositor may remove the Warrant Agent or any successor Warrant Agent upon thirty (30) days notice in writing, mailed to the Warrant Agent or successor Warrant Agent, as the case may be, and to the





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Warrantholders by first-class mail; provided further that no such removal shall become effective until a successor Warrant Agent shall have been appointed hereunder. If the Warrant Agent shall resign or be removed or shall otherwise become incapable of acting, the Depositor shall promptly appoint a successor to the Warrant Agent, which may be designated as an interim Warrant Agent. If an interim Warrant Agent is designated, the Depositor shall then appoint a permanent successor to the Warrant Agent, which may be the interim Warrant Agent. If the Depositor shall fail to make such appointment of a permanent successor within a period of thirty (30) days after such removal or within sixty (60) days after notification in writing of such resignation or incapacity by the resigning or incapacitated Warrant Agent or by the Warrantholder, then the Warrant Agent or registered Warrantholder may apply to any court of
competent jurisdiction for the appointment of such a successor.

Any successor to the Warrant Agent appointed hereunder must be rated in one of the four highest rating categories by the Rating Agencies. Any entity which may be merged or consolidated with or which shall otherwise succeed to substantially all of the trust or agency business of the Warrant Agent shall be deemed to be the successor Warrant Agent without any further action.

Section 4.4Warrant Agent Transfer Fee.  The Warrant Agent will assess a fee of $50.00 upon the issue of any new Warrant, such fee to be assessed upon the new Warrantholder.





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EXHIBIT A TO SCHEDULE III

FORM OF WARRANT CERTIFICATE

STRUCTURED ASSET TRUST UNIT REPACKAGINGS (SATURNS)

SERIES 2006-2

WARRANTS

EACH PURCHASER OR OTHER TRANSFEREE OF THIS WARRANT OR ANY INTEREST HEREIN OF THIS WARRANT, BY ITS ACCEPTANCE HEREOF, IS DEEMED TO REPRESENT AND WARRANT FOR THE BENEFIT OF THE TRUSTEE AND THE DEPOSITOR OF THE TRUST, AND EACH DISTRIBUTION PARTICIPANT AS DEFINED IN THE TRUST AGREEMENT THAT SUCH PURCHASER OR OTHER TRANSFEREE IS A QUALIFIED INSTITUTIONAL BUYER AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT AND OF THE TYPE SET FORTH IN THE WARRANT TRANSFER LETTER.

THE HOLDER, AND EACH FIDUCIARY WHICH CAUSES ANY PERSON TO ACQUIRE ANY WARRANT, IN ITS INDIVIDUAL AS WELL AS ITS FIDUCIARY CAPACITY, WILL BE DEEMED BY SUCH PURCHASE, HOLDING OR ACQUISITION, ON EACH DATE ON WHICH THE WARRANT IS HELD BY SUCH PERSON, TO HAVE REPRESENTED THAT IT IS NOT A (I) EMPLOYEE BENEFIT PLAN (AS DEFINED IN SECTION 3(3) OF THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED (ERISA)) SUBJECT TO THE FIDUCIARY RESPONSIBILITY PROVISIONS OF TITLE I OF ERISA, (II) PLAN DESCRIBED IN SECTION 4975(E)(1) OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED (THE CODE) SUBJECT TO SECTION 4975 OF THE CODE, (III) ENTITY WHOSE UNDERLYING ASSETS INCLUDE PLAN ASSETS BY REASON OF A PLANS INVESTMENT IN SUCH ENTITY OR OTHERWISE OR (IV) GOVERNMENTAL OR OTHER PLAN SUBJECT TO REQUIREMENTS SUBSTANTIALLY SIMILAR TO TITLE I OF ERISA OR
SECTION 4975 OF THE INTERNAL REVENUE CODE.

EACH PERSON THAT ACQUIRES A WARRANT, AND EACH FIDUCIARY WHO CAUSES A PERSON TO ACQUIRE A WARRANT, IN ITS INDIVIDUAL AS WELL AS ITS FIDUCIARY CAPACITY, AGREES TO INDEMNIFY AND HOLD HARMLESS THE DEPOSITOR, THE WARRANT AGENT, THE TRUSTEE, MS&CO. AND THEIR RESPECTIVE AFFILIATES FROM ANY COST, DAMAGES, LOSS OR EXPENSE, INCURRED BY THEM AS A RESULT OF THE REPRESENTATIONS MADE BY SUCH PERSON OR FIDUCIARY IN THIS PARAGRAPH NOT BEING TRUE.

THIS WARRANT MAY BE SUBJECT TO ADDITIONAL RESTRICTIONS ON TRANSFER AS PROVIDED IN THE TRUST AGREEMENT FOR THE TRUST TO WHICH THIS WARRANT RELATES.

ANY PURPORTED TRANSFER OF THIS WARRANT CERTIFICATE (OR ANY INTEREST HEREIN) IN VIOLATION OF SECTION 3.2(A)(1) OR SECTION 3.2(A)(2) OF SCHEDULE III TO THE TRUST AGREEMENT SHALL BE VOID AB INITIO AND THE





| | III-10 | 
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PURPORTED TRANSFEREE IN SUCH TRANSFER SHALL NOT BE RECOGNIZED BY ANY PERSON AS A HOLDER OF SUCH WARRANTS FOR ANY PURPOSE.  THE DEPOSITOR AND THE TRUSTEE SHALL EACH HAVE THE POWER TO SELL THE WARRANTS (OR ANY INTEREST HEREIN) OF A PURPORTED WARRANTHOLDER (OR OWNER OF ANY INTEREST HEREIN) WHO ACQUIRED ITS INTEREST IN VIOLATION OF SECTION 3.2(A)(1) OR SECTION 3.2(A)(2) OF SCHEDULE III TO THE TRUST AGREEMENT OR WHO CONTINUES TO HOLD WARRANTS IN VIOLATION OF SECTION 3.2(A)(2) OF SCHEDULE III OF THE TRUST AGREEMENT.

THIS WARRANT SHALL BE CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK AND THE OBLIGATIONS, RIGHTS AND REMEDIES OF THE PARTIES HEREUNDER SHALL BE DETERMINED IN ACCORDANCE WITH SUCH LAWS.



|Warrant No. 1                                     | CUSIP No. 86360Y116
|------------------------------------------------- | -------------------
|REGISTERED INITIAL NUMBER: 25,510                 |                    
|AGGREGATE INITIAL NUMBER
OF ALL WARRANTS:  25,510 |                    



STRUCTURED ASSET TRUST UNIT REPACKAGINGS (SATURNS)

SERIES 2006-2

WARRANTS

This certifies that [                     ] is the registered owner of Warrants in the number specified above.

The Trust Property will be held in trust by the Trustee identified in the Trust Agreement  (the Trust).  The Trust has been created pursuant to a Trust Agreement, dated as of August 2, 2006 (the Trust Agreement), between LaSalle Bank National Association, as Trustee of the Trust (the Trustee), and MS Structured Asset Corp.

To the extent not defined herein, all capitalized terms shall have the meanings assigned to such terms in the Trust Agreement and the Terms Schedule attached thereto.  This Warrant is one of the Warrants described in the Trust Agreement and is issued under and subject to the terms, provisions and conditions of the Trust Agreement.  By acceptance of this Warrant, the Warrantholder assents to and becomes bound by the Trust Agreement.

Each Warrant issued by the Trust represents a Call Option and Call Right to purchase $1,000 Unit Principal Balance of the Units.  Exercises on this Certificate will be made in accordance with a written notice to the Warrant Agent specified in the Trust Agreement.

This Certificate does not purport to summarize the Trust Agreement and reference is hereby made to the Trust Agreement for information with respect to the rights, benefits,





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obligations and duties evidenced thereby.  A copy of the Trust Agreement may be examined during normal business hours at the Corporate Trust Office of the Trustee, located at 135 South LaSalle Street, Suite 1625, Chicago, Illinois 60603 and at such other places, if any, designated by the Trustee, by any Warrantholder upon request.

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

Unless the certificate of authentication hereon shall have been executed by an authorized officer of the Trustee, by manual signature, this Certificate shall not entitle the Warrantholder hereof to any benefit under the Trust Agreement or be valid for any purpose.

IN WITNESS WHEREOF, the Trustee, on behalf of the Trust, and not in its individual capacity, has caused this Certificate to be duly executed.

SATURNS TRUST NO. 2006-2

BY: LASALLE BANK NATIONAL

| | ASSOCIATION,
| | ------------
| | as Trustee  





By:  ______________________________

Authorized Signatory

DATED:

[SEAL]

Trustees Certificate of

Authentication:

This is one of the Warrants referred

to in the within-mentioned Agreement.

LASALLE BANK NATIONAL ASSOCIATION,

| | as Authenticating Agent
| | -----------------------





By:  ____________________________

Authorized Signatory





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STRUCTURED ASSET TRUST UNIT REPACKAGINGS (SATURNS)

SERIES 2006-2

The Trust Agreement permits the amendment thereof, in certain circumstances, without the consent of the Warrantholders of any of the Certificates.

As provided in the Trust Agreement and subject to certain limitations therein set forth, the transfer of this Certificate is registerable in the Warrant Register upon surrender of this Certificate for registration of transfer at the office or agency maintained by the Trustee in Chicago, Illinois, accompanied by a written instrument of transfer and, if applicable, a transfer letter in form and substance satisfactory to the Trustee duly completed and executed by the Warrantholder hereof or such Warrantholders attorney duly authorized in writing, and thereupon one or more new Certificates of authorized denominations evidencing the same aggregate interest in the Trust will be issued to the designated transferee.

As provided in the Trust Agreement and subject to certain limitations therein set forth, Certificates are exchangeable for new Certificates representing different numbers of Warrants which evidence the same aggregate Warrants, as requested by the Warrantholder surrendering the same.  No service charge will be made for any such registration of transfer or exchange, but the Trustee may require payment of a sum sufficient to cover any tax or governmental charges payable in connection therewith.

The Depositor, the Trustee and any agent of the Depositor or the Trustee may treat the person in whose name this Certificate is registered as the owner hereof for all purposes, and none of the Depositor, the Trustee, or any such agent shall be affected by any notice to the contrary.

Notwithstanding anything contained in the Trust Agreement to the contrary the Trust Agreement has been accepted by LaSalle Bank National Association not in its individual capacity but solely as Trustee and in no event shall LaSalle Bank National Association have any liability for the representations, warranties, covenants, agreements or other obligations of the Depositor thereunder or in any of the certificates, notices or agreements delivered pursuant thereto, as to all of which recourse shall be had solely to the assets of the Depositor, and under no circumstances shall LaSalle Bank National Association be personally liable for the payment of any indebtedness or expenses of the Trust.  The Warrants do not represent interests in or obligations of the Trustee and the Trustee shall not be responsible or accountable for any tax, accounting or other treatment proposed to be applied to the
Warrants or any interest therein except as expressly provided in the Trust Agreement.





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ASSIGNMENT FOR SATURNS SERIES 2006-2

FOR VALUE RECEIVED the undersigned hereby sells, assigns and transfers unto

PLEASE INSERT SOCIAL SECURITY

OR OTHER IDENTIFYING NUMBER

OF ASSIGNEE

___________________________________________________________________________

(Please print or typewrite name and address, including postal zip code, of assignee)

____________________________________________________________________________

the within Certificate, and all rights thereunder, hereby irrevocably constituting and appointing

____________________________________________________________________________

Attorney to transfer said Certificate on the books of the Certificate Registrar, with full power of
substitution in the premises.

Dated:

_______________________________*/







_______________

*/NOTICE: The signature to this assignment must correspond with the name as it appears upon the face of the within Certificate in every particular, without alteration, enlargement or any change whatever.







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EXHIBIT B TO SCHEDULE III

FORM OF EXCERCISE NOTICE AND CERTIFICATION OF SOLVENCY

[DATE]

LaSalle Bank National Association

135 S. LaSalle Street

Chicago, Illinois 60603

MS Structured Asset Corp.

1585 Broadway

New York, New York 10036

|Re: | Structured Asset Trust Unit Repackagings (SATURNS), Series 2006-2
|--- | -------------------------------------------------------------------

Ladies and Gentlemen:

We hereby give notice of our intent to acquire __________ Unit Principal Balance Units for settlement on _________ (the Call Date).  [We hereby direct the Trustee and the Warrant Agent to treat this exercise [up to] __________ Unit Principal Balance of Units as an exercise in connection with a [redemption][tender offer] up to the maximum amount allocable to us in connection with this exercise.]

We certify that our assets exceed our liabilities, that we are able to meet our obligations as they come due, and that we are not subject to any bankruptcy or insolvency proceeding.

[WARRANTHOLDER]

By:

Name:

Title:







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EXHIBIT C TO SCHEDULE III

FORM OF WARRANT TRANSFER LETTER

[DATE]

LaSalle Bank National Association

135 S. LaSalle Street

Chicago, Illinois 60603

MS Structured Asset Corp.

1585 Broadway

New York, New York 10036

|Re: | Structured Asset Trust Unit Repackagings (SATURNS), Series 2006-2
|--- | -------------------------------------------------------------------

Ladies and Gentlemen:

In connection with its proposed purchase of Warrants (the Warrants) which represent the right to call $______________ aggregate Unit Principal Balance of SATURNS 2006-2 Cummins Engine Company Debenture Backed Units, the undersigned transferee (the Transferee) confirms that:

1.The Transferee understands that substantial risks are involved in an investment in the Warrants. The Transferee represents that in making its investment decision to acquire the Warrants, the Transferee has not relied on representations, warranties, opinions, projections, financial or other information or analysis, if any, supplied to it by any person, including MS&Co., MS Structured Asset Corp., as depositor (the Depositor), or LaSalle Bank National Association, as trustee (the Trustee), or any of your or their affiliates, except as expressly contained in written information, if any. The Transferee has such knowledge and experience in financial and business matters as to be capable of evaluating the merits and risks of an investment in the Warrants,
and the Transferee is able to bear the substantial economic risks of such an investment. The Transferee has relied upon its own tax, legal and financial advisors in connection with its decision to purchase the Warrants.

2.Such Transferee (A) is a qualified institutional buyer (as defined in Rule 144A of the Securities Act) that (1) is not a broker-dealer that owns and invests on a discretionary basis less than $25 million in securities of issuers that are not affiliated persons of the dealer and (2) is not a plan referred to in paragraph (a)(1)(i)(D) or (a)(1)(i)(E) of Rule 144A or a trust fund referred to in paragraph (a)(1)(i)(F) of Rule 144A that holds the assets of such a plan, if investment decisions with respect to the plan are made by the beneficiaries of the plan, (B) is aware that the sale or transfer of the Warrants to it may be made to it in reliance on the exemption from registration provided by Rule 144A under the Securities Act and (C) is acquiring the Warrants for its
own account or for one or more accounts, each of which is a qualified institutional buyer, and as to each of which the Transferee exercises sole investment discretion, and in each case in accordance with any applicable securities laws of any state of the United States and other jurisdictions.





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3.The Transferee understands that the Warrants have not been and will not be registered under the 1933 Act or under the securities or blue sky laws of any state, and that (i) if it decides to resell, pledge or otherwise transfer any Security, such resale, pledge or other transfer must comply with the provisions of the Trust Agreement relating to the Warrants and (ii) it will, and each subsequent holder will be required to, notify any purchaser of any Warrant from it of the resale restrictions in the Trust Agreement.

4.The Transferee understands that each of the Warrants will bear a legend substantially to the following effect, unless otherwise agreed by the Depositor and the Trustee:

EACH PURCHASER OR OTHER TRANSFEREE OF THIS WARRANT OR ANY INTEREST HEREIN OF THIS WARRANT, BY ITS ACCEPTANCE HEREOF, IS DEEMED TO REPRESENT AND WARRANT FOR THE BENEFIT OF THE TRUSTEE AND THE DEPOSITOR OF THE TRUST, AND EACH DISTRIBUTION PARTICIPANT AS DEFINED IN THE TRUST AGREEMENT THAT SUCH PURCHASER OR OTHER TRANSFEREE IS A QUALIFIED INSTITUTIONAL BUYER AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT.

THE HOLDER, AND EACH FIDUCIARY WHICH CAUSES ANY PERSON TO ACQUIRE ANY WARRANT, IN ITS INDIVIDUAL AS WELL AS ITS FIDUCIARY CAPACITY, WILL BE DEEMED BY SUCH PURCHASE, HOLDING OR ACQUISITION, ON EACH DATE ON WHICH THE WARRANT IS HELD BY SUCH PERSON, TO HAVE REPRESENTED THAT IT IS NOT A (I) EMPLOYEE BENEFIT PLAN (AS DEFINED IN SECTION 3(3) OF THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED (ERISA)) SUBJECT TO THE FIDUCIARY RESPONSIBILITY PROVISIONS OF TITLE I OF ERISA, (II) PLAN DESCRIBED IN SECTION 4975(E)(1) OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED (THE CODE) SUBJECT TO SECTION 4975 OF THE CODE, (III) ENTITY WHOSE UNDERLYING ASSETS INCLUDE PLAN ASSETS BY REASON OF A PLANS INVESTMENT IN SUCH ENTITY OR OTHERWISE OR (IV) GOVERNMENTAL OR OTHER PLAN SUBJECT TO REQUIREMENTS SUBSTANTIALLY SIMILAR TO TITLE I OF ERISA OR
SECTION 4975 OF THE INTERNAL REVENUE CODE.

EACH PERSON THAT ACQUIRES A WARRANT, AND EACH FIDUCIARY WHO CAUSES A PERSON TO ACQUIRE A WARRANT, IN ITS INDIVIDUAL AS WELL AS ITS FIDUCIARY CAPACITY, AGREES TO INDEMNIFY AND HOLD HARMLESS THE DEPOSITOR, THE TRUSTEE, THE WARRANT AGENT, MS&CO. AND THEIR RESPECTIVE AFFILIATES FROM ANY COST, DAMAGES, LOSS OR EXPENSE, INCURRED BY THEM AS A RESULT OF THE REPRESENTATIONS MADE BY SUCH PERSON OR FIDUCIARY IN THIS PARAGRAPH NOT BEING TRUE.

THIS WARRANT MAY BE SUBJECT TO ADDITIONAL RESTRICTIONS ON TRANSFER AS PROVIDED IN THE TRUST AGREEMENT FOR THE TRUST TO WHICH THIS WARRANT RELATES.

ANY PURPORTED TRANSFER OF THIS WARRANT CERTIFICATE (OR ANY INTEREST HEREIN) IN VIOLATION OF SECTION 3.2(A)(1) OR SECTION 3.2(A)(2) OF SCHEDULE III TO THE TRUST AGREEMENT SHALL BE VOID AB INITIO AND THE





| | III-17 | 
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PURPORTED TRANSFEREE IN SUCH TRANSFER SHALL NOT BE RECOGNIZED BY ANY PERSON AS A HOLDER OF SUCH WARRANTS FOR ANY PURPOSE.  THE DEPOSITOR AND THE TRUSTEE SHALL EACH HAVE THE POWER TO SELL THE WARRANTS (OR ANY INTEREST HEREIN) OF A PURPORTED WARRANTHOLDER (OR OWNER OF ANY INTEREST HEREIN) WHO ACQUIRED ITS INTEREST IN VIOLATION OF SECTION 3.2(A)(1) OR SECTION 3.2(A)(2) OF SCHEDULE III TO THE TRUST AGREEMENT OR WHO CONTINUES TO HOLD WARRANTS IN VIOLATION OF SECTION 3.2(A)(2) OF SCHEDULE III OF THE TRUST AGREEMENT.

THIS WARRANT SHALL BE CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK AND THE OBLIGATIONS, RIGHTS AND REMEDIES OF THE PARTIES HEREUNDER SHALL BE DETERMINED IN ACCORDANCE WITH SUCH LAWS.

5.The Transferee and each fiduciary which causes the Transferee to acquire any Warrant, in its individual as well as its fiduciary capacity, represents and agrees that the Transferee is NOT a Plan, is NOT a governmental or other plan subject to restrictions substantially similar to Title I of ERISA or Section 4975 of the Code, and is NOT acquiring the Warrants with the assets of any such Plan or other plan.  The Transferee and each such fiduciary understands that the representations made in this section 5 will be deemed made on each day from the date hereof through and including the date on which the Transferee disposes of the Warrants.  The Transferee and each fiduciary who causes the Transferee to acquire a Warrant, in its individual as well as its fiduciary capacity, agrees to
indemnify and hold harmless the Depositor, the Trustee, the Warrant Agent, MS&Co., each Distribution Participant and their respective affiliates from any cost, damages, loss or expense, incurred by them as a result of the representations made in this paragraph not being true.

6.The Transferee understands that no subsequent transfer of the Warrants is permitted unless such transfer is to a transferee who will own, after giving effect to such transfer and any other simultaneous transfers, at least 250 Warrants and the Transferee causes the proposed transferee to provide to the Depositor and the Trustee such documentation as may be required pursuant to Section 3.2 of the Warrant Agent Agreement, including, if required, a letter substantially in the form hereof, or such other written statement as the Depositor shall reasonably prescribe.

| | 7. | The Transferee is a Person who is either:
| | -- | -----------------------------------------

A.(1) a citizen or resident of the United States, (2) a corporation, partnership or other entity organized in or under the laws of the United States or any political subdivision thereof, or (3) an estate the income of which is includible in gross income for federal income tax purposes regardless of source, or (4) a trust if a court within the United States is able to exercise primary supervision of the administration of the trust and one or more United States persons have the authority to control all substantial decisions of the trust, or

B.a Person not described in (A), whose ownership of such Warrant is effectively connected with such Persons conduct of a trade or business within the United States within the meaning of the Internal Revenue Code of 1986, as amended (the Code), and its ownership of





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any interest in such Warrant will not result in any withholding obligation with respect to any payments with respect to the Warrants by any Person (other than withholding, if any, under Section 1446 of the Code), or

C.a Person not described in (A) or (B) above, who is not a Person: (1) that owns, directly or indirectly, 10% or more of the total combined voting power of all classes of stock in the Underlying Security Issuer (as defined in Schedule II to the Trust Agreement) entitled to vote, (2) that is a controlled foreign corporation related to the Underlying Security Issuer within the meaning of Section 864(d)(4) of the Code, or (3) that is a bank extending credit pursuant to a loan agreement entered into in the ordinary course of its trade or business.

8.The Transferee agrees that (i) if it is a Person described in clause (A) above, it will furnish to the Depositor and the Trustee a properly executed IRS Form W-9, and (ii) if it is a Person described in clause (B) above, it will furnish to the Depositor and the Trustee a properly executed IRS Form W-8ECI, and (iii) if it is a Person described in clause (C) above, it will furnish to the Depositor and the Trustee a properly executed IRS Form W-8BEN (or, if the Transferee is treated as a partnership for federal income tax purposes, a properly executed IRS Form W-8IMY with appropriate certification for all partners or members attached). The Transferee also agrees that it will provide a new IRS form upon the expiration or obsolescence of any previously delivered form, and that it
will provide such other certifications, representations or Opinions of Counsel as may be requested by the Depositor and the Trustee.

9.The Transferee understands that any acquisition of Warrants (or any interest therein) in violation of Section 3.2(a)(1) (addressed in paragraph 2 hereof) or Section 3.2(a)(2) (addressed in paragraph 5 hereof) of Schedule III to the Trust Agreement shall be void ab initio and the purported transferee in such transfer shall not be recognized by any Person as a holder of such Warrants for any purpose.  The Transferee understands that the Depositor and the Trustee shall each have the power to sell the Warrants (or any interest therein) of a purported Warrantholder (or owner of any interest therein) who acquired its interest in violation of Section 3.2(a)(1) or Section 3.2(a)(2) of Schedule III to the Trust Agreement or who continues to hold Warrants in violation of Section 3.2(a)(2)
of Schedule III to the Trust Agreement.





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You and the Trustee are entitled to rely upon this letter and are irrevocably authorized to produce this letter or a copy hereof to any interested party in any administrative or legal proceeding or official inquiry with respect to the matters covered hereby.

Very truly yours,

[Name of Transferee]

By:_______________________________

Name:

Title:



|Registered 
      Name: | ___________________
|----------------------- | -------------------



|Address: | ___________________
|-------- | -------------------
|         | ___________________



|Payment Instructions: | ___________________
|--------------------- | -------------------













| | III-20 | 
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