Simson Pharma Limited is an Indian manufacturer and supplier of pharmaceutical reference materials, complex impurities, and research chemicals for pharmaceutical and life-science research. Its portfolio includes impurity standards, nitrosamine impurities, controlled substances, stable isotope-labelled and deuterated compounds, peptide impurities, metabolites, glucuronides, and working standards. The company also offers custom synthesis, purification and isolation, analytical testing, and research services to support laboratory and bioanalytical work.

Simson emphasizes compound characterization, purity assessment, quality assurance, document control, and secure three-layer packaging. Its research and development laboratories in Hyderabad, India, support synthesis from milligram to kilogram scale and provide purification and analytical testing using equipment that includes HPLC, gas chromatography, FTIR, LC-MS, and ICP-MS. The website lists quality credentials including ISO 9001, ISO 14001, ISO 45001, ISO 17025, and ISO 17034, as well as GMP compliance. With offices in Mumbai and laboratory operations in Hyderabad, Simson serves customers in India and internationally. Customers can enquire about products and request technical information, including certificates of analysis and characterization data.