MilliporeSigma
3050 Spruce Street
St Louis, MO 63103
314-771-5765
Stock Symbol: SIAL
MilliporeSigma, formerly known as Sigma-Aldrich before it was acquired by and became a subsidiary of Merck KGaA in 2015, has its headquarters located in St. Louis, Missouri. It operates in 38 countries and is a "Life Science and High Technology company" that manufactures chemical and biochemical products and kits that are used across the scientific community in many areas of research and diagnostic technology.
Sigma-Aldrich Link