2,3-Dimercaptopropanoic acid 2,3-Dimercaptopropionic acid 2,3-Dimercaptopropionsaeure [German] 4-03-00-01054 (Beilstein Handbook Reference) 6220-25-3 BRN 1748873 Propanoic acid, 2,3-dimercapto- (9CI) Propionic acid, 2,3-dimercapto-