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