Synonyms: | N-Desmethyl-N-cyclopentyl Tadalafil;Tadalafil Impurity 54;(6R,12aR)-2,3,6,7,12,12a-hexahydro-2-cyclopentyl-6-(3,4-methylenedioxyphenyl)-pyrazino[2',1',6,1]-pyrido[3,4-b]indole-1,4-dione;Pyrazino[1',2':1,6]pyrido[3,4-b]indole-1,4-dione, 6-(1,3-benzodioxol-5-yl)-2-cyclopentyl-2,3,6,7,12,12a-hexahydro-, (6R,12aR)- |