Abstract
1. Demethylation of ethimizol in humans yielded 1-ethyl-4-carbamoyl-5-methyl-carbamoylimidazole.
2. The formation, and the excretion in urine or saliva, of the other mono-N-demethylated ethimizol isomer, 1-ethyl-5-carbamoyl-4-methylcarbamoylimidazole has not been detected.