他达拉非杂质A Impurity A:(Tryptophan DKP)
他达拉非杂质B Impurity B: (Piperonal)
C Impurity C: (Desmethyl Tadalafil)
D Impurity D
E Impurity E
F Impurity F : (6S,12aR)-trans-tadalafil
G Impurity G: (6S,12aR)-trans-tadalafil
H Impurity H: (6R,12aS)-trans-tadalafil
I Impurity I: Catechol impurity