Haloperidol EP Impurity D

Chemical Name: 4-[4-(4-chlorophenyl)-4-hydroxypiperidin-1-yl]-1-[4-[4-(4-chlorophenyl)-4-hydroxypiperidin-1-yl]phenyl]butan-1-one (as per EP);4,4'-Bis[4-(p-chlorophenyl)-4-hydroxypiperidino]-butyrophenone (as per USP)