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)

Smile: O[C@@H]([C@H](OC1=CC(C)=C(O[C@H](CCNC)C2=CC=CC=C2)C=C1)O[C@H](C(O)=O)[C@H]3O)[C@H]3O