Synonyms: 4H-Bis[1,3]benzodioxolo[5,6-a:4',5'-g]quinolizine,6,7,12b,13-tetrahydro-13-methyl-, (12bR-trans)-; Berbine,13-methyl-2,3:9,10-bis(methylenedioxy)- (8CI); Corysamine, tetrahydro- (7CI);(+)-Tetrahydrocorysamine; Tetrahydrocorysamine; d-Tetrahydrocorysamine