Synonyms: 1-Isotetrandrine(8CI); Berbaman, 6,6',7,12-tetramethoxy-2,2'-dimethyl-; Isotetrandrine(6CI,7CI); (+)-Isotetrandrine; (R,S)-Tetrandrine;16H-1,24:6,9-Dietheno-11,15-metheno-2H-pyrido[2',3':17,18][1,11]dioxacycloeicosino[2,3,4-ij]isoquinoline,3,4,4a,5,16a,17,18,19-octahydro-12,21,22,26-tetramethoxy-4,17-dimethyl-,[4aS-(4aR*,16aS*)]-; Isosinomenin A; Isosinomenine A; NSC 97338;O,O-Dimethylobamegine; O,O-Dimethylstepholine; O,O'-Dimethylobamegine;O,O'-Dimethylstepholine; O-Methylberbamine