2005 – JRH Biosciences, an industrial supplier of cell culture products for the pharmaceutical and biotechnology industries Proligo Group, a global supplier of genomics research tools.2004 – Ultrafine (a supplier of contract manufacturing services for drug development), Tetrionics (a producer of high potency and cytotoxic active pharmaceutical ingredients).2001 – ISOTEC (produces stable isotopes used in basic research and medical diagnostics).2000 – First Medical Inc., Amelung GmbH, ARK Scientific.1997 – Research Biochemicals International, Riedel-de-Haen, Techcares Systems, Carbolabs, YA Kemia.acquired to enter the chromatography market 1989 – Fluka Chemie AG (Swiss company founded in the 1950s) purchased for $39 million.Securities and Exchange Commission to hold a special investors meeting regarding approval for the sale to Merck KGaA. Novem– Sigma-Aldrich filed a definitive proxy statement with the U.S.2014 – Merck KGaA announced that it would purchase Sigma-Aldrich for approx.2005 – Announced membership in The RNAi Consortium.
1999 – Sigma-Aldrich reaches $1 billion in sales.Their first year earned $43 million in sales. 1975 – Merger of Sigma Chemical and Aldrich Chemical to created Sigma-Aldrich.1972 – Subsidiary Aldrich-Boranes launched to manufacture hydroboration products.1951 – Aldrich founded in Milwaukee by Alfred Bader and Jack Eisendrath and manufactured just 1-methyl-3-nitro-1-nitrosoguanidine.They were the first to manufacture pure ATP. 1946 – Sigma was formed from Midwest Consultants and manufactured just adenosine triphosphate.1935 – Midwest Consultants was founded in St Louis by brothers Aaron and Bernard Fischer, who hired chemical engineer Daniel Broida.The company grew throughout the 1980s and 1990s, with significant expansion in facilities, acquisitions and diversification into new market sectors. Louis and Aldrich Chemical Company of Milwaukee were both American specialty chemical companies when they merged in August 1975. It is headquartered in Burlington, Massachusetts, United States. The company is currently a part of Merck's life science business and in combination with Merck's earlier acquired Millipore, operates as MilliporeSigma. In 2015, the multinational chemical conglomerate Merck Group acquired Sigma-Aldrich for $17 billion. Louis and has operations in approximately 40 countries. It grew through various acquisitions until it had over 9,600 employees and was listed on the Fortune 1000. Sigma-Aldrich was created in 1975 by the merger of Sigma Chemical Company and Aldrich Chemical Company. Sigma-Aldrich (formally MilliporeSigma) is an American chemical, life science, and biotechnology company owned by the multinational chemical conglomerate Merck Group.
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