Synonyms: 1(3H)-Isobenzofuranone,6,7-dimethoxy-3-(5,6,7,8-tetrahydro-6-methyl-1,3-dioxolo[4,5-g]isoquinolin-5-yl)-,hydrochloride, [S-(R*,S*)]-; 1(3H)-Isobenzofuranone,6,7-dimethoxy-3-[(5R)-5,6,7,8-tetrahydro-6-methyl-1,3-dioxolo[4,5-g]isoquinolin-5-yl]-,hydrochloride, (3S)- (9CI); Hydrastine, hydrochloride (8CI);1,3-Dioxolo[4,5-g]isoquinoline, 1(3H)-isobenzofuranone deriv.; (1R,9S)-b-Hydrastine hydrochloride; b-Hydrastine hydrochloride