Enzalutamide carboxylic acid (MDV3100 carboxylic acid) is an inactive metabolite of Enzalutamide (MDV3100). Enzalutamide is an androgen receptor (AR) antagonist. In Vitro Enzalutamide is converted into its major metabolites, N-desmethyl enzalutamide and carboxylic acid enzalutamide, by cytochrome P450 (CYP) 3A4/5 and CYP2C8, respectively. N-desmethyl enzalutamide has clinically relevant anti-androgen capacities similar to enzalutamide, whereas carboxylic acid enzalutamide is inactive. MCE has not independently confirmed the accuracy of these methods. They are for reference only. Form:Solid