6-hydroxy Chlorzoxazone is a metabolite of chlorzoxazone. [1] It is formed by metabolism of chlorzoxazone by the cytochrome P450 (CYP) isoform CYP2E1 in human hepatic microsomes.
Chlorzoxazone N-glucuronide is a phase II metabolite of the skeletal muscle relaxant chlorzoxazone . Chlorzoxazone N-glucuronide is formed via glucuronidation of chlorzoxazone by the UDP-glucuronosyltransferase (UGT) isoform UGT1A9.
Pifexole is the 1,2,4-oxadiazole derivative. It has a similar profile of muscle-relaxant activity in animals to that of chlorzoxazone. In rats, pifexole is reported to be seven times more potent than chlorzoxazone in inhibition of strychnine-induced convulsions.