Description General description Delorazepam, also known as chlordesmethyldiazepam and nordiclazepam, is a long acting benzodiazepine. Delorazepam is also an active metabolite of the benzodiazepine drugs diclazepam and cloxazolam. This stable-labeled internal standard is suitable for use in LC/MS or GC/MS benzodiazepine testing applications including forensic analysis, clinical toxicology, and urine drug testing. Legal Information CERILLIANT is a registered trademark of Cerilliant Corporation