14009-24-6 6,7,3',4'-Tetraethoxy-1-benzal-1,2,3,4-tetrahydroisoquinoline hydrochloride 985-12-6 Drotaverin hydrochloride Drotaverine hydrochloride Drotaverinium chloride Isodihydroperparine hydrochloride Isoquinoline, 1,2,3,4-tetrahydro-6,7-diethoxy-1-((3,4-diethoxyphenyl)methylene)-, hydrochloride Isoquinoline, 1-((3,4-diethoxyphenyl)methylene)-6,7-diethoxy-1,2,3,4-tetrahydro-, hydrochloride Isoquinoline, 1-(3,4-diethoxybenzylidene)-6,7-diethoxy-1,2,3,4-tetrahydro-, hydrochloride No-Spa No-Spa hydrochloride Tetraspasmin-Lefa