Darifenacin Impurities

Darifenacin Hydrochloride Impurities:

Impurity Name: Darifenacin Dimer 1
Chemical Name: (S)-N-(2-(23-dihydrobenzofuran-5-yl)ethyl)-N-(2-(23-dihydrobenzofuran-6-yl)ethyl)-22-diphenyl-2-(pyrrolidin-3-yl)acetamide
M.W.: 572.74
M.F.: C38H40N2O3

Impurity Name: Darifenacin Dimer 2
Chemical Name: (S)-N-(2-(23-dihydrobenzofuran-5-yl)ethyl)-2-(1-(2-(23-dihydrobenzofuran-5-yl)ethyl)pyrrolidin-3-yl)-22-diphenylacetamide.
M.W.: 572.74
M.F.: C38H40N2O3

Impurity Name: Darifenacin R-isomer
Chemical Name: (R)-2-(1-(2-(23-dihydrobenzofuran-5-yl)ethyl)pyrrolidin-3-yl)-22-diphenylacetamide
M.W.: 426.55
M.F.: C28H30N2O2

Impurity Name: Darifenacin Nitrile Impurity
Chemical Name: (S)-2-(1-(2-(23-dihydrobenzofuran-5-yl)ethyl)pyrrolidin-3-yl)-22-diphenylacetonitrile.
M.W.: 408.53
M.F.: C28H28N2O

Impurity Name: Darifenacin Dehydro Impurity
Chemical Name: 2-((1R)-3-(2-(benzofuran-5-yl)ethyl)cyclopentyl)-22-diphenylacetamide.
M.W.: 423.55
M.F.: C29H29NO2

Impurity Name: Darifenacin Dehydro Impurity
Chemical Name: 2-((1R)-3-(2-(benzofuran-5-yl)ethyl)cyclopentyl)-22-diphenylacetamide.
M.W.: 423.55
M.F.: C29H29NO2

We will provide COA HPLC MASS HNMR along with material.