Notes: 7α-hydroxy-3-oxo-5β-Cholan-24-oic acid is a metabolite of chenodeoxycholic acid (Item Nos. 35346 / 10011286).{72026} It is formed from chenodeoxycholic acid primarily by the cytochrome P450 (CYP) isoform CYP3A4 but also by CYP3A5 and other P450 enzymes at lower rates.