6-Chloro-2,3-dimethyl-1-phenyl-d5-1H-benzo[d]imidazol-3-ium Chloride is the labeled analogue of 6-Chloro-2,3-dimethyl-1-phenyl-1H-benzo[d]imidazol-3-ium Chloride (C367230), a degradation product of Clobazam (C582500), a benzodiazepine psychotherapeutic agent that has proven efficacy against multiple seizure types. An anxiolytic; anticonvulsant.