Alfa Aesar is now Thermo Scientific Chemicals

Our complete chemicals portfolio, including Alfa Aesar products, has been consolidated under the Thermo Scientific Chemicals brand. This site and the Thermo Scientific Chemicals brand are now your home for organic synthesis chemicals, including building blocks and moisture-sensitive reagents.

Shop now

Featured products


We also offer custom and bulk chemicals, specialized testing, and tailored packaging solutions to meet your research and development needs. Our custom and bulk chemicals are manufactured under a detailed and robust quality management program and are shipped with lot-specific Certificates of Analysis (COA) and Safety Data Sheets (SDS).

Learn more about our custom and specialty solutions