Darifenacin Oxidized Impurity

Chemical Name: 3-​Pyrrolidineacetamide​, 1-​[2-​(5-​benzofuranyl)​ethyl]​-​α,​α-​diphenyl-​, (3S)​-; 3-Pyrrolidineacetamide, 1-[2-(5-benzofuranyl)ethyl]-α,α-diphenyl-, (S)- (9CI); (3S)-1-[2-(5-Benzofuranyl)ethyl]-α,α-diphenyl-3-pyrrolidineacetamide; (S)-2-[1-[2-(Benzofuran-5-yl)ethyl]-3-pyrrolidinyl]-2,2-diphenylacetamide