The human cytochrome P450 (CYP) isozymes catalyzing the oxidative metabolism of the widely abused amphetamine derivatives MDMA (N-methyl-3, 4- methylenedioxyamphetamine,“Ecstasy”), MDE (N-ethyl-3, 4-methylenedioxyamphetamine,“ Eve”), and MDA (3, 4-methylenedioxyamphetamine) were identified. Using a simplified non- extractive reversed-phase HPLC assay with fluorescence detection, biphasic Michaelis– ...