10hydroxy warfarin

10-hydroxy Warfarin is a metabolite of (R)-warfarin .1It is formed from (R)-warfarin by the cytochrome P450 (CYP) isoform CYP3A4. 10-hydroxy Warfarin is an inhibitor of CYP2C9 (IC50= 1.6 μM), the enzyme that converts (S)-warfarin to its 6-hydroxy warfarin and 7-hydroxy warfarin metabolites.2 1.Kaminsky, L.S., and Zhang, Z.-Y.Human P450 metabolism of warfarinPharmacol. Ther.73(1)67-74(1997) 2.Jones, D.R., Kim, S.-Y., Guderyon, M., et al.Hydroxywarfarin metabolites potently inhibit CYP2C9 metabolism of S-warfarinChem. Res. Toxicol.23(5)939-945(2010)