3-(S)-(+)-(1-Carbamoyl-1,1-diphenylmethyl)pyrrolidine L-(+)-tartrate

(s)-α,α-diphenyl-3-pyrrolidineacetamide l-tartrate ; 3-(s)-(+)-(1-carbamoyl -1,1-diphenylmethyl)pyrroli ; (s)-α,α-diphenyl- ; 1-diphenylmethyl)pyrroloidine-l-(+)-tartarate ; darifenacin pyrrolidine impurity s-isomer ; 3-(s)-(+)-(1-carbamo ; darifenacin intermediate 8 ; darifenacin impurity a ; 3-(s)-(1-carbamoyl-1,1-diph ; darifenacin intermediate 5