Synonyms: 6H-Dibenzo[a,g]quinolizine,5,8,13,13a-tetrahydro-2,3,9,10-tetramethoxy-, hydrochloride (9CI);6H-Dibenzo[a,g]quinolizine, 5,8,13,13a-tetrahydro-2,3,9,10-tetramethoxy-,hydrochloride, (?à)-;Berbine, 2,3,9,10-tetramethoxy-, hydrochloride, (?à)- (8CI); (?à)-Tetrahydropalmatine hydrochloride; NSC 132057; NSC209411; Tetrahydropalmatine hydrochloride; dl-Tetrahydropalmatine hydrochloride