SCHEDULE 14A (Rule 14a-101)
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SIGMA-ALDRICH CORPORATION
(Name of Registrant as Specified In Its Charter)
(Name of Person(s) Filing Proxy Statement, if other than the Registrant)
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*** Exercise YourRight to Vote ***
IMPORTANT NOTICERegarding the Availability of Proxy Materials
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| | | | | | | | Meeting Information |
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| | SIGMA-ALDRICH CORPORATION | | | | | | Meeting Type: Annual |
| | | | | | | | For holders as of: 3/6/09 |
| | | | | | | | Date: 5/5/09 Time:11:00 a.m. CDT |
| | | | | | | | Location: | | Sigma-Aldrich’s Life Science and |
| | | | | | | | | | High Technology Center, |
| | | | | | | | | | 2909 Laclede Avenue |
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| | | | | | | | St. Louis, MO 63103 |
| | | | | | You are receiving this communication because you hold shares in the company named above. This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online atwww.proxyvote.com or easily request a paper copy (see reverse side). We encourage you to access and review all of the important information contained in the proxy materials before voting. |
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How to Access the Proxy Materials
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Voting Items | | | | | | | | |
This proxy will be voted FOR items 1 and 2 unless otherwise directed, and in the discretion of the proxies, on whatever other business may properly come before the meeting. | | | | | | |
The Board of Directors recommends a vote FOR the following:
1. | ELECTION OF DIRECTORS: 01) Rebecca M. Bergman, 02) David R. Harvey, |
03) W. Lee McCollum, 04) Jai P. Nagarkatti, 05) Avi M. Nash,
06) Steven M. Paul, 07) J. Pedro Reinhard, 08) Timothy R.G. Sear,
09) D. Dean Spatz and 10) Barrett A. Toan.
2. | Ratification of the appointment of KPMG LLP as the Company’s independent registered public accountant for 2009. |

