Atorvastatin EP Impurity J

Chemical Name:  (2E,5S)-7-[2-(4-fluorophenyl)-3-phenyl-4-(phenylcarbamoyl)-5-(propan-2-yl)-1H-pyrrol-1-yl]-5-hydroxyhept-2-enoic acid (as per EP); (S,E)-7-[2-(4-Fluorophenyl)-5-isopropyl-3-phenyl-4-(phenylcarbamoyl)-1H-pyrrol-1-yl]-5-hydroxyhept-2-enoic acid (as per USP)

Synonym: Atorvastatin 3-Deoxy-Hept-2-Enoic Acid (USP) ; 2,3-Anhydro Atorvastatin ; Dehydro Atorvastatin Acid