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Live Webcast
Q2 2008 Sigma-Aldrich Corporation Earnings Conference Call
July 23, 2008, 11:00 AM ET
Replay
Sigma-Aldrich Corporation at NASDAQ Investor Program
May 21, 2008, 11:45 AM UKT
Replay
Sigma-Aldrich Corporation at Robert W. Baird & Co., Inc. Growth Stock Conference
May 13, 2008, 1:20 PM CT
Replay
Sigma-Aldrich Corporation at Banc of America Securities Health Care Conference
May 13, 2008, 10:40 AM PT
Replay
Sigma-Aldrich Corporation Annual Shareholder’s Meeting
May 6, 2008, 12:00 PM ET

Sigma-Aldrich is a leading Life Science and High Technology company. Our biochemical and organic chemical products and kits are used in scientific and genomic research, biotechnology, pharmaceutical development, the diagnosis of disease and as key components in pharmaceutical and other high technology manufacturing. We have customers in life science companies, university and government institutions, hospitals and in industry. Sigma-Aldrich operates in 36 countries and has over 7,900 employees providing excellent service worldwide.

Date Title (click for more)
7/15/2008 Aldrichimica Acta Ranked First in Organic Chemistry by Impact Factor
7/8/2008 Sigma-Aldrich Announces Collaboration With Metahelix Life Sciences
6/24/2008 Sigma-Aldrich Introduces 96-Well Plasmid Purification Kit That Produces Industry's Highest Viral Titers
Exchange
NASDAQ GS
Listed Security
SIAL Common Stock
Transfer Agent
Registered Shareholder Contact Information
American Stock Transfer & Trust Company
Shareholder Services Department
6201 15th Street
Brooklyn, NY 11219
Toll Free: (800) 937-5449
Local & International: (718) 921-8124
Email: investors@amstock.com
Web site: www.amstock.com

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