Clonazolam, also known as clonitrazolam, is a highly potent benzodiazepine analog that can cause strong sedation and amnesia at minimal oral doses. Clonazolam is also sold on the designer drug market with cases of abuse noted in Europe and the US. This internal standard is suitable for Clonazolam testing or isotope dilution methods by GC/MS or LC/MS for clinical toxicology, urine drug testing, pain prescription monitoring or forensic analysis.