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South Africa - March 21, 2012 Please note that the import of animal origin products into South Africa are currently being regulated

This means that there could be products that you require, that we are presently unable to import e.g. animal serums, albumins, gelatins, milk powders. Please contact the office if you are unsure on whether your product can be supplied.

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St. Louis, MO - September 28, 2015 Sigma-Aldrich and Merck KGaA, Darmstadt, Germany, Making Progress Toward Completion of Planned Acquisition

Sigma-Aldrich Corporation (NASDAQ: SIAL) announced today it is making progress toward closing the planned acquisition of the Company by Merck KGaA, Darmstadt, Germany. The closing is now expected within the next two months.

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St. Louis, MO - September 22, 2015 Sigma-Aldrich Named to Dow Jones Sustainability Indices

Only St. Louis-Based Company on List, Earns Ranking for Third Consecutive Year

Sigma-Aldrich Corporation (NASDAQ: SIAL) was recently named to the Dow Jones Sustainability Indices (DJSI), a list of leading companies from around the world in terms of their social, environmental and economic performance. Sigma-Aldrich, which has been named for three consecutive years, is the only St. Louis-based company to receive this designation.

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St. Louis, MO - September 17, 2015 Sigma-Aldrich Announces Exclusive Distribution Agreement with IROA Technologies, LLC

Provides Researchers with Global Access to IROA Technologies' Mass Spectrometry Metabolite Library of Standards

Sigma-Aldrich Corporation (NASDAQ: SIAL) announced today it has signed an exclusive global distribution agreement with IROA Technologies, LLC to distribute IROA's Mass Spectrometry Metabolite Library of Standards™ (MSMLS). The agreement partners IROA's MSMLS product portfolio and software with the industry-leading eCommerce and supply chain capabilities of Sigma-Aldrich.

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