Atorvastatin Related Compound C (20 mg) (Difluoro impurity,or (3R,5R)-7-[3-(phenylcarbamoyl)-4,5-bis(4-fluorophenyl)-2-isopropyl-1H-pyrrol-1-yl]-3,5-dihydroxyheptanoic acidcalcium salt)

Atorvastatin Related Compound C (20 mg) (Difluoro impurity,or (3R,5R)-7-[3-(phenylcarbamoyl)-4,5-bis(4-fluorophenyl)-2-isopropyl-1H-pyrrol-1-yl]-3,5-dihydroxyheptanoic acidcalcium salt)