title: Unusual reversible attack by sodium bisulfite on physostigmine.
mesh_terms: D000975:Antioxidants / Q000032:analysis; D055598:Chemical Phenomena; D002621:Chemistry; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D009904:Optical Rotation; D010830:Physostigmine / Q000032:analysis; D013056:Spectrophotometry, Ultraviolet; D013447:Sulfites / Q000032:analysis
chemical_list: D000975:Antioxidants; D013447:Sulfites; D010830:Physostigmine; C009279:sodium bisulfite