Order Center

Use the Order Center to build a Shopping Cart, view Saved Shopping Carts, Recent Orders and Quotes


Search for SDS (Safety Data Sheet) by Product Number

RNAi Learning Center

MISSION® RNAi Resources


Sigma-Aldrich is a leading Life Science and High Technology Materials company focused on enabling science to improve the quality of life

Contact Us

Contact Cutomer Service

Email Subscription Center

To receive the information that is relevant to your work, explore our subscription center and set your preferences

Global Citizenship

Learn more about our commitment to people, green chemistry and the environment

Interactive Periodic Table

The table offers an easy way to access Aldrich Materials Science products

Advanced Structure Search

Copy and paste, advanced query features, instant structure to name generation, element analysis and more

News & Information

St. Louis, MO - October 8, 2015 Cerilliant Introduces Certified Spiking Solutions of Bile Acids

Sigma-Aldrich Corporation (NASDAQ: SIAL) announced today that the Cerilliant® brand within its Applied Diagnostics and Testing business segment has launched its new bile acid reference standards product line with ten certified Snap-N-Spike® solutions of the most routinely tested bile acids and their stable-labeled internal standards. These new solution certified reference materials (CRMs) consist of lithocholic acid, taurocholic acid and native and deuterium-labeled analogs of cholic acid, chenodeoxycholic acid, deoxycholic acid, and ursodeoxycholic acid.

Read More
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.

Read More
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.

Read More
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.

Read More