Sigma-Aldrich

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Sigma-Aldrich (part of MilliporeSigma) is a brand operating within an American chemical, life science, and biotechnology company owned by the multinational chemical conglomerate Merck Group. The life sciences business of Merck Group operates as MilliporeSigma in the United States. Sigma-Aldrich was created in 1975 by the merger of Sigma Chemical Company and Aldrich Chemical Company. It grew through various acquisitions until it had over 9,600 employees and was listed on the Fortune 1000. The company has two United States headquarters, in St. Louis and Burlington, MA and has operations in approximately 40 countries. In 2015, the multinational chemical conglomerate Merck Group acquired Sigma-Aldrich for $17 billion. The company is currently a part of Merck's life science business and in combination with Merck's earlier acquired Millipore, operates as MilliporeSigma. It is headquartered in Burlington, Massachusetts, United States.

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