Sigma-Aldrich Corp. has acquired Advanced Separation Technologies, Inc. (Astec). The acquisition will add chiral chromatography capabilities and product line, enabling the Sigma-Aldrich’s Research Specialties business units to better support the analysis and purification of chiral compounds. Terms of the cash transaction were not disclosed. “In addition to a wide range of proprietary chiral chromatography products, the acquisition of Astec brings the specialized knowledge of chi...