Atorvastatin Pyrrolidone Analog Sodium Salt Impurity
Atorvastatin IMP (βR,δR)-5-(4-Fluorophenyl)-2,3-dihydro-β,δ-dihydroxy-3-(1-methylethyl)-2-oxo-4-phenyl-3-[(phenylamino)carbonyl]-1H-pyrrole-1-heptanoic Acid Sodium Salt