Atorvastatin lactone

Atorvastatin lactone

CAT N°: 20951
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Atorvastatin lactone is an active metabolite of the HMG-CoA reductase inhibitor atorvastatin.{62437,32970} It is formed from atorvastatin by the UDP-glucuronosyltransferase (UGT) isoforms UGT1A3 and UGT1A1 in insect cell-derived supersomes expressing the human enzymes, and hydrolyzes to form atorvastatin in human serum at room temperature.{32970,32969} Atorvastatin lactone inhibits HMG-CoA reductase (IC50 = 0.007 µM for the rat liver enzyme).{62437} It also inhibits the cytochrome P450 (CYP) isoforms CYP2C9.1 and CYP2C9.3 (IC50s = 16.8 and 5.62 µM, respectively), as well as P-glycoprotein (P-gp; IC50 = 3.1-5.2 µM).{59946,32967}

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