| Nasdaq: SIAL
Sigma-Aldrich Corp. operates as a life science and technology material company. It develops, manufactures, purchases and distributes a broad range of biochemicals and organic chemicals. Sigma-Aldrich's biochemical and organic chemical products are used in scientific research, including genomic and proteomic research, biotechnology, pharmaceutical development and as key components in pharmaceutical, diagnostic and other high technology manufacturing. The company operates through four Research business units: Essentials, Specialties, Biotech and SAFC. The Research Essentials unit sells biological buffers, cell culture reagents, biochemicals, chemicals, solvents, and other reagents and kits. These products are typically sold in higher volumes to value conscious research buyers. The Research Specialties unit sells organic chemicals, biochemicals, analytical reagents, chromatography and other laboratory consumables, reference materials and high-purity products which are generally sold in smaller volumes to the lab scientist customer. The Research Biotech unit supplies immunochemical, molecular biology, cell biology, proteomic, genomic, transgenic and other life science products to academic, government, industrial, biotechnology and pharmaceutical research customers. The SAFC unit supplies large-scale organic chemicals and biochemicals used in development and production by pharmaceutical, biotechnology, industrial, diagnostic and electronics companies. It has a broad global customer base, which includes commercial laboratories, pharmaceutical, industrial, diagnostics, biotechnology and electronics companies, universities, hospitals, governmental institutions and other non-profit organizations. The company was founded in May 1975 and is headquartered in St. Louis, MO.