Darifenacin Chiral Peak ID Mixture (25 mg) (A mixture containing darifenacin hydrobromide, (S)-2-{1-[2-(2,3-Dihydrobenzofuran-5-yl)ethyl]-3-pyrrolidinyl}-2,2-diphenylacetamide hydrobromide [133099-07-7], and about 1% of darifenacin R-isomer, (R)-2-{1-[2-(2,3-Dihydrobenzofuran-5-yl)ethyl]-3-pyrrolidinyl}-2,2-diphenylacetamide hydrobromide) [1092800-15-1]