[29] Revenues:[30] Products: Customers: Geographies (% of 2008 sales): Aldrich is a supplier in the research and fine chemicals market.

Sigma is the Sigma-Aldrich's main biochemical supplier, with offerings including antibiotics, buffers, carbohydrates, enzymes, forensic tools, hematology and histology, nucleotides, proteins, peptides, amino acids and their derivatives.

Their offerings range from standard biochemical reagents to specialized research tools, including ligands for receptors and ion channels, enzyme inhibitors, phosphospecific antibodies, key signal transduction enzymes, and assay kits for cell signaling.

ISOTEC provides isotopically labeled products for protein structure determination, peptide synthesis, proteomics, metabolic research, magnetic resonance imaging, nuclear magnetic resonance, breath test substrates, agriculture, as well as gas and gas mixes.

Located in St. Louis, Missouri, SAGE Labs have developed knockout rats for the study of human diseases and disorders (such as autism), which are sold for up to US$95,000.

Matthias Heinzel became CEO of the Life Science business of Merck KGaA, Darmstadt, Germany in April 2021 following Udit Batra's departure from the company.