Synonyms:
(1r,3r)-methyl 1-(benzo[d][1,3]dioxol-5-yl)-2-(2-chloroacetyl)-2,3,4,9-tetrahydro-1h-pyrido[3,4-b ; (1r,3r)-1-(1,3-benzodioxol-5-yl)-2-(chloroacetyl)-2,3,4,9-tetrahydro-1h-pyrido[3,4-b] indole-3-carboxylic acid methyl ester ; (1r,3r)-1-(1,3-benzodioxol-5-yl)-2-(chloroacetyl)-2,3,4,9-tetrahydro-1h-pyrido[3,4-b]indole-3-carboxylic acid methyl ester ; (1r,3r)-methyl 1-(benzo[d][1,3]dioxol-5-yl)-2-(2-chloroacetyl)-2,3,4,9-tetrahydro-1h-pyrido[3,4-b]indole-3-carboxylate ; (6r,12ar)-methyl1,2,3,4-tetrahydro-2-chloroacetyl-1-(3,4-methylenedioxyphenyl)-9h-pyrido[3,4-b]indole-3-carboxylate ; (1r,3r)-1-(1,3-benzodioxol-5-yl)-2-(chloroacetyl-2,3,4,9-tetrahydro-1h-pyrido[3,4-b]indole-3-carboxylicacidmethyeste ; tadalafil impurity: impurity e ; (6r.12ar)-methyl-1,2,3,4-tetrahydro-2-chloroacetyl1-1(3,4-methylenedioxyphenyl)9h-pyrido-[3,4-b]-indole-3-carbxylate ; (1r,3r)-methyl-1,2,3,4-tetrahydro-2-chloroacetyl-1-(3,4-methylenedioxyphenyl)-9h-pyrido[3,4-b]indole-3-carboxylate ; (1r,3r)-1-(1,3-benzodioxol-5-yl)-2-(chloroacetyl-2,3,4,9-tetrahydro-1h-pyrido[3,4-b] indole-3-carboxylic acid methy ester