1-BUTANONE, 4-(4-(4-CHLOROPHENYL)-4-HYDROXY-1-PIPERIDINYL)-1-(2-FLUOROPHENYL)- 4-(4-(4-CHLOROPHENYL)-4-HYDROXYPIPERIDIN-1-YL)-1-(2-FLUOROPHENYL)BUTAN-1-ONE HALOPERIDOL IMPURITY B [EP IMPURITY] HALOPERIDOL RELATED COMPOUND B [USP IMPURITY] HALOPERIDOL RELATED COMPOUND B [USP-RS]