Atorvastatin EP Impurity E (Calcium Salt)

Chemical Name: (3S,5S)-7-[2-(4-fluorophenyl)-3-phenyl-4-(phenylcarbamoyl)-5-(propan-2-yl)-1H-pyrrol-1-yl]-3,5-dihydroxyheptanoic acid Calcium salt (as per EP) ; Calcium(3S,5S)-7-[2-(4-fluorophenyl)-5-isopropyl-3-phenyl-4-(phenylcarbamoyl)-1H-pyrrol-1-yl]-3,5-dihydroxyheptanoate (as per USP)

Synonym: Ent-Atorvastatin (EP) ; Atorvastatin USP Related Compound E ; Atorvastatin (3S,5S)-enantiomer

Smile: O=C([O-])C[C@@H](O)C[C@@H](O)CCN1C(C2=CC=C(F)C=C2)=C(C3=CC=CC=C3)C(C(NC4=CC=CC=C4)=O)=C1C(C)C.[Ca+2]