[CAS Number 2558-30-7] Desmethylflunitrazepam, also known as Norflunitrazepam and N-Desmethylflunitrazepam, is a benzodiazepine and a urinary metabolite of flunitrazepam. It is often sold as a designer drug. Desmethylflunitrazepam is available as reference material (bulk powder and/or solution) and as calibrated, Ready-to-Use, certified reference material (CRM). This product is designed for qualitative and quantitative protocols and can be used for forensic, toxicology, research, and other chemical/biochemical analytical applications. Special storage & shipping requirements.