September 2011

Preliminary Terms No. 45
Registration Statement No. 333-155535
Dated August 24, 2011
Filed pursuant to Rule 433

STRUCTURED INVESTMENTS
Opportunities in U.S. Equities

PLUS Based on the Value of the S&P 500® Index due October 31, 2012
Performance Leveraged Upside SecuritiesSM

PLUS offer leveraged exposure to a wide variety of assets and asset classes, including equities, commodities and currencies. These investments are designed to allow investors to capture enhanced returns relative to the asset’s actual positive performance. The leverage typically applies only for a certain range of price performance. In exchange for enhanced performance in that range, investors generally forgo performance above a specified maximum return. At maturity, an investor will receive an amount in cash that may be greater than, equal to, or less than the stated principal amount based upon the closing value of the asset on the valuation date. The PLUS are senior unsecured obligations of JPMorgan Chase & Co., and all payments on the PLUS are subject to the credit risk of JPMorgan Chase & Co. The investor may lose some or all of the stated principal amount of the PLUS.

SUMMARY TERMS
Issuer: JPMorgan Chase & Co.
Maturity date: October 31, 2012, subject to adjustment for certain market disruption events and as described under “Description of PLUS — Payment at Maturity” in the accompanying product supplement no. MS-9-A-II.
Underlying index: S&P 500® Index
Aggregate principal amount: $
Payment at maturity:

If the final index value is greater than the initial index value, for each $10 stated principal amount PLUS,

$10 + leveraged upside payment

In no event will the payment at maturity exceed the maximum payment at maturity.

If the final index value is less than or equal to the initial index value, for each $10 stated principal amount PLUS,

$10 x index performance factor

This amount will be less than or equal to the stated principal amount of $10 per PLUS.

Leveraged upside payment: $10 x leverage factor x index percent increase
Index percent increase: (final index value – initial index value) / initial index value
Initial index value: The index closing value of the underlying index on the pricing date
Final index value: The index closing value of the underlying index on the valuation date
Valuation date: October 26, 2012, subject to adjustment for non-trading days or certain market disruption events and as described under “Description of PLUS — Payment at Maturity” in the accompanying product supplement no. MS-9-A-II.
Leverage factor: 300%
Index performance factor: final index value / initial index value
Maximum payment at maturity: $11.60 to $12.00 (116% to 120% of the stated principal amount) per PLUS. The actual maximum payment at maturity will be determined on the pricing date and will not be less than $11.60 or greater than $12.00.
Stated principal amount: $10 per PLUS
Issue price: $10 per PLUS (see “Commissions and issue price” below)
Pricing date: September    , 2011 (expected to price on or about September 26, 2011)
Original issue date: September    , 2011 (3 business days after the pricing date)
CUSIP / ISIN: 46636T820/ US46636T8201
Listing: The PLUS will not be listed on any securities exchange.
Agent: J.P. Morgan Securities LLC (“JPMS”)
Commissions and issue price: Price to Public(1)(2) Fees and Commissions(2)(3) Proceeds to Issuer

Per PLUS

$10.00 $0.20 $9.80

Total

$ $ $

(1)      The price to the public includes the estimated cost of hedging our obligations under the PLUS through one or more of our affiliates, which includes our affiliates’ expected cost of providing such hedge as well as the profit our affiliates expect to realize in consideration for assuming the risks inherent in providing such hedge. For additional related information, please see “Use of Proceeds” beginning on PS-38 of the accompanying product supplement no. MS-9-A-II.
 
(2)      The actual price to public and commissions for a particular investor may be reduced for volume purchase discounts depending on the aggregate amount of PLUS purchased by that investor. The lowest price payable by an investor is $9.925 per PLUS. Please see “Syndicate Information” on page 5 for further details.
 
(3)      JPMS, acting as agent for JPMorgan Chase & Co., will receive a commission and will use all of that commission to allow selling concessions to Morgan Stanley Smith Barney LLC (“MSSB”) that will depend on market conditions on the pricing date. In no event will the commission received by JPMS and the selling concessions to be allowed to MSSB, exceed $0.20 per $10 stated principal amount PLUS. See “Underwriting (Conflicts of Interest)” beginning on page PS-130 of the accompanying product supplement no. MS-9-A-II.

Investing in the PLUS involves a number of risks. See “Risk Factors” on page PS-15 of the accompanying product supplement no. MS-9-A-II and “Risk Factors” beginning on page 8 of these preliminary terms.

Neither the Securities and Exchange Commission (the “SEC”) nor any state securities commission has approved or disapproved of the PLUS or passed upon the accuracy or the adequacy of this document or the accompanying prospectus supplement and prospectus. Any representation to the contrary is a criminal offense.

The PLUS are not bank deposits and are not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency, nor are they obligations of, or guaranteed by, a bank.

YOU SHOULD READ THIS DOCUMENT TOGETHER WITH THE RELATED PRODUCT SUPPLEMENT NO. MS-9-A-II, PROSPECTUS SUPPLEMENT AND PROSPECTUS, EACH OF WHICH CAN BE ACCESSED VIA THE HYPERLINKS BELOW, BEFORE YOU DECIDE TO INVEST.

     Product supplement no. MS-9-A-II dated March 7, 2011:
http://www.sec.gov/Archives/edgar/data/19617/000089109211001580/e42540_424b2.pdf

Prospectus supplement dated November 21, 2008:
http://www.sec.gov/Archives/edgar/data/19617/000089109208005661/e33600_424b2.pdf

Prospectus dated November 21, 2008:
http://www.sec.gov/Archives/edgar/data/19617/000089109208005658/e33655_424b2.pdf

The issuer has filed a registration statement (including a prospectus) with the SEC for the offering to which this communication relates. Before you invest, you should read the prospectus in that registration statement and other documents the issuer has filed with the SEC for more complete information about the issuer and this offering. You may get these documents for free by visiting EDGAR on the SEC Web site at www.sec.gov. Alternatively, the issuer, any underwriter or any dealer participating in this offering will arrange to send you the prospectus if you request it by calling toll-free (800) 869-3326.



PLUS Based on the Value of the S&P 500® Index due October 31, 2012
Performance Leveraged Upside SecuritiesSM

Investment Overview

Performance Leveraged Upside Securities

The PLUS Based on the Value of the S&P 500® Index due October 31, 2012 (the “PLUS”) can be used:

The PLUS are exposed on a 1:1 basis to the negative performance of the underlying index.

Maturity: Approximately 13 months

Leverage factor:

300%

Maximum payment at maturity: $11.60 to $12.00 (116% to 120% of the stated principal amount) per PLUS (to be determined on the pricing date)

Minimum payment at maturity:

None

S&P 500® Index Overview

The S&P 500® Index, which is calculated, maintained and published by Standard & Poor’s Financial Services LLC, an affiliate of The McGraw-Hill Companies, Inc., consists of 500 component stocks selected to provide a performance benchmark for the U.S. equity markets. The calculation of the S&P 500® Index is based on the relative value of the float adjusted aggregate market capitalization of the 500 component companies as of a particular time as compared to the aggregate average market capitalization of the 500 similar companies during the base period of the years 1941 through 1943.

Information as of market close on August 23, 2011:

Bloomberg Ticker Symbol: SPX
Current Index Level: 1162.35
52 Weeks Ago: 1067.36
52 Week High (on 4/29/11): 1363.61
52 Week Low (on 8/26/10): 1047.22

S&P 500® Historical Performance – Daily Closing Values
January 3, 2006 to August 23, 2011

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PLUS Based on the Value of the S&P 500® Index due October 31, 2012
Performance Leveraged Upside SecuritiesSM

Key Investment Rationale

The PLUS offer 300% leveraged upside, subject to a maximum payment at maturity of $11.60 to $12.00 (116% to 120% of the stated principal amount) per PLUS. The actual maximum payment at maturity will be determined on the pricing date.

Investors can use the PLUS to triple returns up to the maximum payment at maturity, while maintaining similar risk as a direct investment in the underlying index.

Leverage Performance The PLUS offer investors an opportunity to capture enhanced returns relative to a direct investment in the underlying index within a certain range of positive performance.
Best Case Scenario The underlying index increases in value and, at maturity, the PLUS pay the maximum payment at maturity of $11.60 to $12.00 (116% to 120% of the stated principal amount) per PLUS. The actual maximum payment at maturity will be determined on the pricing date.
Worst Case
Scenario
The underlying index declines in value and, at maturity, the PLUS pay less than the stated principal amount by an amount proportionate to the decline.

Summary of Selected Key Risks (see page 8)

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PLUS Based on the Value of the S&P 500® Index due October 31, 2012
Performance Leveraged Upside SecuritiesSM

Fact Sheet

The PLUS offered are senior unsecured obligations of JPMorgan Chase & Co., will pay no interest, do not guarantee any return of your principal at maturity and have the terms described in product supplement no. MS-9-A-II, the prospectus supplement and the prospectus, as supplemented or modified by these preliminary terms. At maturity, an investor will receive for each stated principal amount of PLUS that the investor holds, an amount in cash that may be greater than, equal to, or less than the stated principal amount based upon the closing value of the underlying index on the valuation date. The PLUS are senior notes issued as part of JPMorgan Chase & Co.’s Series E Medium-Term Notes program. All payments on the PLUS are subject to the credit risk of JPMorgan Chase & Co.

Expected Key Dates    
Pricing date: Original issue date (settlement date): Maturity date:
September     , 2011 (expected to
price on or about September 26,
2011)
September     , 2011 (3 business days after the
pricing date)
October 31, 2012, subject to postponement due to a market disruption event and as described under “Description of PLUS — Payment at Maturity” in the accompanying product supplement no. MS-9-A-II.

Key Terms  
Issuer: JPMorgan Chase & Co.
Underlying index: S&P 500® Index
Underlying index publisher: Standard & Poor’s Financial Services LLC
Aggregate principal amount: $
Issue price: $10 per PLUS (see “Syndicate Information” on page 5)
Stated principal amount: $10 per PLUS
Denominations: $10 per PLUS and integral multiples thereof
Interest: None
Payment at maturity:

If the final index value is greater than the initial index value, for each $10 stated principal amount PLUS,

$10 + leveraged upside payment

In no event will the payment at maturity exceed the maximum payment at maturity.

If the final index value is less than or equal to the initial index value, for each $10 stated principal amount PLUS,

$10 x index performance factor

This amount will be less than or equal to the stated principal amount of $10 per PLUS.

Leveraged upside payment: $10 x leverage factor x index percent increase
Index percent increase: (final index value – initial index value) / initial index value
Leverage factor: 300%
Index performance factor: final index value / initial index value
Initial index value: The index closing value of the underlying index on the pricing date as published on Bloomberg under the ticker symbol “SPX” or any successor symbol.
Final index value: The index closing value of the underlying index on the valuation date as published on Bloomberg under the ticker symbol “SPX” or any successor symbol.
Valuation date: October 26, 2012, subject to adjustment for non-trading days or certain market disruption events and as described under “Description of PLUS — Payment at Maturity” in the accompanying product supplement no. MS-9-A-II.
Maximum payment at maturity: $11.60 to $12.00 (116% to 120% of the stated principal amount) per PLUS. The actual maximum payment at maturity will be determined on the pricing date and will not be less than $11.60 or greater than $12.00.
Postponement of maturity date: If the scheduled maturity date is not a business day, then the maturity date will be the following business day. If the scheduled valuation date is not a trading day or if a market disruption event occurs on that day so that the valuation date as postponed falls less than three business days prior to the scheduled maturity date, the maturity date of the PLUS will be postponed until the third business day following the valuation date as postponed.
Risk factors: Please see “Risk Factors” beginning on page 8.

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PLUS Based on the Value of the S&P 500® Index due October 31, 2012
Performance Leveraged Upside SecuritiesSM

General Information  
Listing: The PLUS will not be listed on any securities exchange.
CUSIP / ISIN: 46636T820/ US46636T8201
Minimum ticketing size: 100 PLUS
Tax considerations: You should review carefully the section entitled “Certain U.S. Federal Income Tax Consequences” in the accompanying product supplement no. MS-9-A-II. Subject to the limitations described therein, and based on certain factual representations received from us, in the opinion of our special tax counsel, Davis Polk & Wardwell LLP, your PLUS should be treated as “open transactions” for U.S. federal income tax purposes. Assuming this characterization is respected, the gain or loss on your PLUS should be treated as long-term capital gain or loss if you hold your PLUS for more than a year, whether or not you are an initial purchaser of PLUS at the issue price. However, the Internal Revenue Service (the “IRS”) or a court may not respect this characterization or treatment of the PLUS, in which case the timing and character of any income or loss on the PLUS could be significantly and adversely affected. In addition, in 2007 Treasury and the IRS released a notice requesting comments on the U.S. federal income tax treatment of “prepaid forward contracts” and similar instruments, such as the PLUS. The notice focuses in particular on whether to require holders of these instruments to accrue income over the term of their investment. It also asks for comments on a number of related topics, including the character of income or loss with respect to these instruments; the relevance of factors such as the nature of the underlying property to which the instruments are linked; the degree, if any, to which income (including any mandated accruals) realized by Non-U.S. Holders should be subject to withholding tax; and whether these instruments are or should be subject to the “constructive ownership” regime, which very generally can operate to recharacterize certain long-term capital gain as ordinary income that is subject to an interest charge. While the notice requests comments on appropriate transition rules and effective dates, any Treasury regulations or other guidance promulgated after consideration of these issues could materially and adversely affect the tax consequences of an investment in the PLUS, possibly with retroactive effect. Both U.S. and Non-U.S. Holders should consult their tax advisers regarding the U.S. federal income tax consequences of an investment in the PLUS, including possible alternative treatments and the issues presented by this notice. Non-U.S. Holders should also note that they may be withheld upon at a rate of up to 30% unless they have submitted a properly completed IRS Form W-8BEN or otherwise satisfied the applicable documentation requirements.
  The discussion in the preceding paragraph, when read in combination with the discussion in “Risk Factors — The tax consequences of an investment in the PLUS are unclear” in this document and the section entitled “Certain U.S. Federal Income Tax Consequences” in the accompanying product supplement, constitutes the full opinion of Davis Polk & Wardwell LLP regarding the material U.S. federal income tax consequences of owning and disposing of PLUS.
Trustee: Deutsche Bank Trust Company Americas (formerly Bankers Trust Company)
Calculation agent: JPMS
Use of proceeds and hedging: The net proceeds we receive from the sale of the PLUS will be used for general corporate purposes and, in part, by us or by one or more of our affiliates in connection with hedging our obligations under the PLUS.
  For further information on our use of proceeds and hedging, see “Use of Proceeds” in the accompanying product supplement no. MS-9-A-II.
Benefit plan investor considerations: See “Benefit Plan Investor Considerations” in the accompanying product supplement no. MS-9-A-II.
Contact: Morgan Stanley Smith Barney clients may contact their local Morgan Stanley Smith Barney branch office or Morgan Stanley Smith Barney’s principal executive offices at 2000 Westchester Avenue, Purchase, New York 10577 (telephone number (800) 869-3326).
Syndicate Information    
Issue price of the PLUS Commissions Principal amount of PLUS
for any single investor
$10.0000 $0.2000 <$1MM
$9.9625 $0.1625 $1MM and <$3MM
$9.9438 $0.1438 $3MM and <$5MM
$9.9250 $0.1250 $5MM

MSSB may reclaim selling concessions allowed to individual brokers within MSSB in connection with the offering if, within 30 days of the offering, MSSB repurchases the PLUS distributed by such brokers.

This offering summary represents a summary of the terms and conditions of the PLUS. We encourage you to read the accompanying product supplement no. MS-9-A-II, the prospectus supplement and prospectus for this offering, which can be accessed via the hyperlinks on the front page of this document.

September 2011
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PLUS Based on the Value of the S&P 500® Index due October 31, 2012
Performance Leveraged Upside SecuritiesSM

How PLUS Work

Payoff Diagram

The payoff diagram below illustrates the payment at maturity on the PLUS based on the following terms:

Stated principal amount:

$10 per PLUS

Leverage factor: 300%
Hypothetical maximum payment at maturity: $11.80 (118% of the stated principal amount) per PLUS (which represents the midpoint of the range of $11.60 to $12.00)*
*If the actual maximum payment at maturity as determined on the pricing date is less than $11.80, your return, if any, may be lower than the returns shown below.

PLUS Payoff Diagram

How it works

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PLUS Based on the Value of the S&P 500® Index due October 31, 2012
Performance Leveraged Upside SecuritiesSM
  • If the final index value is less than or equal to the initial index value, the investor will receive an amount less than or equal to the $10 stated principal amount, based on a 1% loss of principal for each 1% decline in the underlying index.

  • If the final index value is less than the initial index value by 10%, the investor will lose 10% of its principal and receive only $9 per PLUS at maturity, or 90% of the stated principal amount.

The hypothetical returns and hypothetical payouts on the PLUS shown above do not reflect fees or expenses that would be associated with any sale in the secondary market. If these fees and expenses were included, the hypothetical total returns and payouts shown above would likely be lower.

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PLUS Based on the Value of the S&P 500® Index due October 31, 2012
Performance Leveraged Upside SecuritiesSM

Payment at Maturity

At maturity, investors will receive for each $10 stated principal amount of PLUS that they hold an amount in cash based upon the value of the underlying index, determined as follows:

If the final index value is greater than the initial index value:

     $10 + leveraged upside payment:

subject to the maximum payment at maturity of $11.60 to $12.00 for each PLUS,



If the final index value is less than or equal to the initial index value:

$10 × index performance factor

Because the index performance factor will be less than or equal to 1.0, this payment at maturity will be less than or equal to $10.

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PLUS Based on the Value of the S&P 500® Index due October 31, 2012
Performance Leveraged Upside SecuritiesSM

Risk Factors

The following is a non-exhaustive list of certain key risk factors for investors in the PLUS. For further discussion of these and other risks, you should read the section entitled “Risk Factors” beginning on page PS-7 of the accompanying product supplement no. MS-9-A-II. We also urge you to consult your investment, legal, tax, accounting and other advisers before you invest in the PLUS.

September 2011
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PLUS Based on the Value of the S&P 500® Index due October 31, 2012
Performance Leveraged Upside SecuritiesSM
September 2011
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PLUS Based on the Value of the S&P 500® Index due October 31, 2012
Performance Leveraged Upside SecuritiesSM

Information about the Underlying Index

The S&P 500® Index. The S&P 500® Index, which is calculated, maintained and published by Standard & Poor’s Financial Services LLC (“Standard & Poor’s”), consists of 500 component stocks selected to provide a performance benchmark for the U.S. equity markets. The calculation of the S&P 500® Index is based on the relative value of the float adjusted aggregate market capitalization of the 500 component companies as of a particular time as compared to the aggregate average market capitalization of the 500 similar companies during the base period of the years 1941 through 1943. The S&P 500® Index is described under the heading “The S&P 500® Index” in the accompanying product supplement no. MS-9-A-II.

License Agreement between Standard & Poor’s and J.P. Morgan Securities LLC “Standard & Poor’s®,” “S&P®,” “S&P 500®” and “Standard & Poor’s 500” are trademarks of The McGraw-Hill Companies, Inc. and have been licensed for use by J.P. Morgan Securities LLC. See “The S&P 500® Index — License Agreement with S&P” in the accompanying product supplement no. MS-9-A-II.

Historical Information

The following table sets forth the published high and low closing values, as well as end-of-quarter closing values, of the underlying index for each quarter in the period from January 3, 2006 through August 23, 2011. The closing value of the underlying index on August 23, 2011 was 1162.35. We obtained the information in the table below from Bloomberg Financial Markets, without independent verification. The historical values of the underlying index should not be taken as an indication of future performance, and no assurance can be given as to the level of the underlying index on the valuation date. The payment of dividends on the stocks that constitute the underlying index are not reflected in its level and, therefore, have no effect on the calculation of the payment at maturity.

S&P 500® Index High Low Period End
2006      
First Quarter 1,307.25 1,254.78 1,294.83
Second Quarter 1,325.76 1,223.69 1,270.20
Third Quarter 1,339.15 1,234.49 1,335.85
Fourth Quarter 1,427.09 1,331.32 1,418.30
2007      
First Quarter 1,459.68 1,374.12 1,420.86
Second Quarter 1,539.18 1,424.55 1,503.35
Third Quarter 1,553.08 1,406.70 1,526.75
Fourth Quarter 1,565.15 1,407.22 1,468.36
2008      
First Quarter 1,447.16 1,273.37 1,322.70
Second Quarter 1,426.63 1,278.38 1,280.00
Third Quarter 1,305.32 1,106.39 1,166.36
Fourth Quarter 1,161.06 752.44 903.25
2009      
First Quarter 934.70 676.53 797.87
Second Quarter 946.21 811.08 919.32
Third Quarter 1,057.05 919.32 1,057.08
Fourth Quarter 1,127.78 1,025.21 1,115.10
2010      
First Quarter 1,174.17 1,056.74 1,169.43
Second Quarter 1,217.28 1,030.71 1,030.71
Third Quarter 1,148.67 1,022.58 1,141.20
Fourth Quarter 1,259.78 1,137.03 1,257.64
2011      
First Quarter 1,343.01 1,256.88 1,325.83
Second Quarter 1,363.61 1,265.42 1,320.64
Third Quarter (through August 23, 2011) 1,353.22 1,119.46 1,162.35

September 2011
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PLUS Based on the Value of the S&P 500® Index due October 31, 2012
Performance Leveraged Upside SecuritiesSM

Supplemental Plan of Distribution

Subject to regulatory constraints, JPMS intends to use its reasonable efforts to offer to purchase the PLUS in the secondary market, but is not required to do so.

We or our affiliate may enter into swap agreements or related hedge transactions with one of our other affiliates or unaffiliated counterparties in connection with the sale of the PLUS and JPMS and/or an affiliate may earn additional income as a result of payments pursuant to the swap or related hedge transactions. See “Use of Proceeds” beginning on page PS-38 of the accompanying product supplement no. MS-9-A-II.

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PLUS Based on the Value of the S&P 500® Index due October 31, 2012
Performance Leveraged Upside SecuritiesSM

Where You Can Find More Information

You may revoke your offer to purchase the PLUS at any time prior to the time at which we accept such offer by notifying the applicable agent. We reserve the right to change the terms of, or reject any offer to purchase the PLUS prior to their issuance. In the event of any changes to the terms of the PLUS, we will notify you and you will be asked to accept such changes in connection with your purchase. You may also choose to reject such changes in which case we may reject your offer to purchase.

You should read this document together with the prospectus dated November 21, 2008, as supplemented by the prospectus supplement dated November 21, 2008 relating to our Series E medium-term notes of which these PLUS are a part, and the more detailed information contained in product supplement no. MS-9-A-II dated March 7, 2011.

This document, together with the documents listed below, contains the terms of the PLUS and supersedes all other prior or contemporaneous oral statements as well as any other written materials including preliminary or indicative pricing terms, correspondence, trade ideas, structures for implementation, sample structures, stand-alone fact sheets, brochures or other educational materials of ours. You should carefully consider, among other things, the matters set forth in “Risk Factors” in the accompanying product supplement no. MS-9-A-II, as the PLUS involve risks not associated with conventional debt securities. We urge you to consult your investment, legal, tax, accounting and other advisers before you invest in the PLUS.

You may access these documents on the SEC website at www.sec.gov as follows (or if such address has changed, by reviewing our filings for the relevant date on the SEC website):

Our Central Index Key, or CIK, on the SEC website is 19617.

As used in this document, the “Company,” “we,” “us,” and “our” refer to JPMorgan Chase & Co.

“Performance Leveraged Upside SecuritiesSM” and “PLUSSM” are service marks of Morgan Stanley.

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