Fenofibrate-¹³C₆

Stable heavy isotopes of hydrogen, carbon, and other elements have been incorporated into drug molecules, largely as tracers for quantitation during the drug development process. Deuteration has gained attention because of its potential to affect the pharmacokinetic and metabolic profiles of drugs^[1].
Fenofibrate is a relatively potent inhibitor of CYP2B6 (IC₅₀=0.7±0.2 μM) and CYP2C19 (IC₅₀=0.2±0.1 μM). Fenofibrate is also a moderate inhibitor of CYP2C8 (IC₅₀=4.8±1.7 μM) and CYP2C9 (IC₅₀=9.7 μM)^[2]. Fenofibrate binds to and inhibits cytochrome P450 epoxygenase (CYP)2C with higher affinity than to PPARα. Fenofibrate is a well-known PPARα agonist, but an in vitro assessment of 209 frequently prescribed drugs and related xenobiotics suggests that Fenofibrate is also a potent inhibitor of cytochrome P450 epoxygenase (CYP)2C. The affinity of Fenofibrate to CYP2C is >10 times higher (EC₅₀=2.39±0.4 μM) than to PPARα (EC₅₀=30 μM). Fenofibrate at a low dose inhibits CYP2C8 activity without PPARα activation^[3].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.