Loperamide EP Impurity A

4-(4-(4'-chloro-[1,1'-biphenyl]-4-yl)-4-hydroxypiperidin-1-yl)-N,N-dimethyl-2,2-diphenylbutanamide|4-(4-Chlorobiphenyl)-4-hydroxy-N,N-dimethyl-α,α-diphenyl-1-piperidinebutanamide|4-[4--yl)-4-hydroxypiperidin-1-yl]-N,N-dimethyl-2,2-diphenylbutanamide|4-[4-(4-Chlorobiphenyl-4-yl)-4-hydroxypiperidin-1-yl]-N,N-dimethyl-2,2-diphenylbutanamide;|4-[4-(4?-Chlorobiphenyl-4-yl)-4-hydroxypiperidin-1-yl]-N,N-dimethyl-2,2-diphenylbutanamide ;|4-Dechloro-4-(4-chlorophenyl) Loperamide|4-ethyl-a,a-diphenyl-1-piperidinebutanamide|Loperamide Impurity A