Synonyms: | N-Butyl Nortadalafil;(6R,12aR)-6-(1,3-Benzodioxol-5-yl)-2-butyl-2,3,6,7,12,12a-hexahydropyrazino[1',2':1,6]pyrido[3,4-b]indole-1,4-dione;Tadalafil Impurity 28;Pyrazino[1',2':1,6]pyrido[3,4-b]indole-1,4-dione, 6-(1,3-benzodioxol-5-yl)-2-butyl-2,3,6,7,12,12a-hexahydro-, (6R,12aR)- |