4-Hydroxy atorvastatin (hemicalcium)
4-Hydroxy atorvastatin hemicalcium is a metabolite of Atorvastatin (HY-B0589). Atorvastatin is an orally active HMG-CoA reductase inhibitor, has the ability to effectively decrease blood lipids. Atorvastatin is metabolized by the cytochrome P450 (CYP) isoform CYP3A4 to form 4-hydroxy atorvastatin.