N-desmethyl Rosiglitazone is a major metabolite of rosiglitazone (Item Nos. 71740 | 71742 | 11884), a potent and selective PPARγ ligand present in formulations that have been used to treat type 2 diabetes. Rosiglitazone is metabolized by the cytochrome P450 (CYP) isoform CYP2C8 to form N-desmethyl rosiglitazone.