Order Center

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


Search for MSDS (Material Safety Data Sheet) by Product Number

Oligo Ordering

Custom Products and Services, including DNA oligos (Primers and Probes), RNA, siRNA, Peptide Libraries and AQUA Peptides

New Lab Start-Up Program

Start up your new lab with savings on chemicals, life science reagents and other products for 3 full months

Contact Us

Contact Customer 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


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

Advanced Structure Search

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

News & Information

St. Louis, MO - July 23, 2015 Sigma-Aldrich Meets Evolving Quality and Regulatory Needs with ISO 13485 Expansion, Provides Diagnostic Customers with Reliable Critical Raw Materials

Expanded ISO 13485 certification of two additional Sigma-Aldrich facilities offers in vitro diagnostic (IVD) customers industry-leading quality assurance solutions to mitigate supply chain risk, increase product consistency and meet stringent regulatory requirements

Sigma-Aldrich Corporation (NASDAQ: SIAL) announced the Company has received ISO 13485 certification for expanded quality assurance capabilities at its Dekalb and Barton facilities located in St. Louis. The certification extends Sigma-Aldrich’s ability to manufacture and offer critical raw materials, such as enzymes, proteins and antibodies used in diagnostic assays, and provides in vitro diagnostic (IVD) customers with industry-leading assurance of consistent quality to meet and exceed their supply chain needs at a time of increased regulatory requirements.

Read More
St. Louis, MO - June 15, 2015 Acquisition of Sigma-Aldrich by Merck KGaA, Darmstadt, Germany, Receives Approval from European Union Regulators and from Chinese Ministry of Commerce

Sigma-Aldrich Corporation (NASDAQ: SIAL) announced today that the European Commission (the "EC") has conditionally cleared the planned acquisition of the Company by Merck KGaA, Darmstadt, Germany (the “Transaction”).  Sigma-Aldrich also announced it has obtained full clearance of the Transaction from the Chinese Ministry of Commerce.

Read More
St. Louis, MO - June 11, 2015 Sigma-Aldrich® Named to Newsweek's 2015 Green Rankings

St. Louis-Based Company Remains One of Nation's Environmental Elite

Sigma-Aldrich Corporation (NASDAQ: SIAL) was named in the top five in Newsweek's 2015 Green Rankings, one of the world's most recognized assessments of corporate environmental performance. In its fourth appearance on the list, Sigma-Aldrich maintained its number five ranking among the U.S. 500, which consists of the 500 largest publicly traded companies headquartered in the U.S. by market capitalization. The recognition once again places the St. Louis-based life science company in the top one percent for environmental performance.

Read More
St. Louis, MO - June 9, 2015 Cerilliant Introduces Snap-N-Spike® Stable-Labeled Internal Standards of Antifungal Agents

Sigma-Aldrich Corporation (NASDAQ: SIAL) announced today that the Cerilliant® brand within its Applied Diagnostics and Testing business unit has introduced five new stable-labeled internal standards of the antifungal agents fluconazole, itraconazole, ketoconazole, posaconazole, and voriconazole at 1.0 mg/mL concentrations.

Read More