Tadalafil iMpurity C

(1S,3R)-1-(1,3-Benzodioxol-5-yl)-2-(2-chloroacetyl)-2,3,4,9-tetrahydro-N-methyl-1H-pyrido[3,4-b]indole-3-carboxamide is an impurity of Tadalafil (T004500), a phosphodiesterase 5 inhibitor that is used to treat erectile dysfunction.