Synonyms: Isoquinoline,1-(3,4-diethoxybenzylidene)-6,7-diethoxy-1,2,3,4-tetrahydro- (8CI);1-(3,4-Diethoxybenzylidene)-6,7-diethoxy-1,2,3,4-tetrahydroisoquinoline;3',4',6,7-Tetraethoxy-1-benzyliden-1,2,3,4-tetrahydroisoquinoline;3',4',6,7-Tetraethoxy-1-benzylidene-1,2,3,4-tetrahydroisoquinoline;Drotaverin;Drotaverine;Isodihydroperparine;Perparine, isodihydro-;(1Z)-1-(3,4-diethoxybenzylidene)-6,7-diethoxy-1,2,3,4-tetrahydroisoquinoline;Drotaverina;1-Benzyl-3',4',6,7-tetraethoxy-1,2,3,4-tetrahydroisoquinoline;