英文别名ent-Tadalafil; (6S,12aS)-tadalafil; L-Tildenafil; L-Tadalafil; Tadalafil Impurity 12; Tadalafil Impurity B (ent-tadalafil); Tadalafil EP Impurity B ((6S,12S)-Tadalafil); Pyrazino[1',2':1,6]pyrido[3,4-b]indole-1,4-dione, 6-(1,3- benzodioxol-5-yl)-2,3,6,7,12, 12a-hexahydro-2-Methyl-,(6S, 12aS)-; (6S,12aS)-6-(1,3-benzodioxol-5-yl)-2-Methyl-2,3,6,7,12,12a-hexahydropyrazino[1′,2′:1,6]pyrido[3,4-b]indole-1,4-dione; Tadanafil EP or USP impurity B; (S,S)-Tadalafil; (6S,12aS)-6-(1,3-Benzodioxol-5-yl)-2,3,6,7,12,12a-hexahydro-2-Methyl-pyrazino[1',2':1,6]pyrido[3,4-b]indole-1,4-dione 
