Camphorsulfonic acid, sometimes abbreviated CSA or 10-CSA is an organosulfur compound. Like typical sulfonic acids, it is a relatively strong acid that is a colorless solid at room temperature and is soluble in water and a wide variety of organic substances. This compound is commercially available.
Camphor-10-sulfonic acid is used as a resolving agent for chiral amines and other cations. It is involved in the preparation of active pharmaceutical ingredient such as trimetaphan camsilate, which is used to reduce bleeding during neurosurgery. Further, it is involved in the transglucosidation of methyl and ethyl D-glucopyranosides by alcoholysis.
Hygroscopic. Incompatible with strong oxidizing agents and strong bases.