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Certain features of Sigma-Aldrich.com will be down for maintenance the evening of Friday August 18th starting at 8:00 pm CDT until Saturday August 19th at 12:01 pm CDT.   Please note that you still have telephone and email access to our local offices. We apologize for any inconvenience.

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Sigma-Aldrich is a leading Life Science and High Technology company. Our chemical and biochemical products and kits are used in scientific research, including genomic and proteomic research, biotechnology, pharmaceutical development, the diagnosis of disease and as key components in pharmaceutical, diagnostic and other high technology manufacturing.
Sigma-Aldrich operates in 40 countries and has 7,600 employees providing excellent service worldwide. Sigma-Aldrich is committed to Accelerating Customers' Success through Innovation and Leadership in Life Science, High Technology and Service.
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For answers to general questions
about Sigma-Aldrich from the
Continental United States, call
1-800-521-8956
  Sigma-Aldrich Corporate Offices
Sigma-Aldrich
3050 Spruce St.
St. Louis, MO 63103