Bromazolam structure.png
Legal status
Legal status
  • 8-bromo-6-phenyl-1-methyl-4H-benzo[f] [1,2,4]triazolo[4,3-a] [1,4]diazepine
CAS Number
PubChem CID
Chemical and physical data
Molar mass353.223 g·mol−1
3D model (JSmol)
  • Brc1cc2C(=NCc3nnc(C)n3c2cc1)c4ccccc4
  • InChI=1S/C17H13BrN4/c1-11-20-21-16-10-19-17(12-5-3-2-4-6-12)14-9-13(18)7-8-15(14)22(11)16/h2-9H,10H2,1H3

Bromazolam (XLI-268) is a triazolobenzodiazepine (TBZD) which was first synthesised in 1976, but was never marketed.[1] It has subsequently been sold as a designer drug, first being definitively identified by the EMCDDA in Sweden in 2016.[2] It is the bromo instead of chloro analogue of alprazolam and has similar sedative and anxiolytic effects to it and other benzodiazepines.[3][4] Bromazolam is a non subtype selective agonist at the benzodiazepine site of GABAA receptors, with a binding affinity of 2.81nM at the α1 subtype, 0.69nM at α2 and 0.62nM at α5.[5]


In the United States, Bromazolam is unscheduled at the federal level. However a number of states such as Virginia have placed Bromazolam into Schedule 1 at the state level but does not include the chloro analog Phenazolam.[6][7]

Despite being unscheduled there have been several arrests in the United States for mismarketing Bromazolam as Alprazolam, typically in the shape of brand name Xanax tablets which constitutes a counterfeit drug charge among others.[8]

In Illinois, at least 1 person has been arrested for "unlawful possession of a controlled substance, a Class 4 felony." for the possession of less than 15 grams of Bromazolam, similar to being charged for unlawful possession of Alprazolam in Illinois. It's unknown if this arrest involved counterfeit Xanax shaped tablets or powder.[9] However Bromazolam is not scheduled in Illinois.[10]

In the United Kingdom, Bromazolam is a Class C controlled substance.

See also


  1. ^ Manchester KR, Lomas EC, Waters L, Dempsey FC, Maskell PD (January 2018). "The emergence of new psychoactive substance (NPS) benzodiazepines: A review". Drug Testing and Analysis. 10 (1): 37–53. doi:10.1002/dta.2211. PMID 28471096.
  2. ^ "Europol 2016 Annual Report on the implementation of Council Decision 2005/387/JHA. EMCDDA" (PDF). European Monitoring Centre for Drugs and Drug Addiction (EMCDDA) and European Union Agency for Law Enforcement Cooperation (Europol). 2017.
  3. ^ Waters L, Manchester KR, Maskell PD, Haegeman C, Haider S (May 2018). "The use of a quantitative structure-activity relationship (QSAR) model to predict GABA-A receptor binding of newly emerging benzodiazepines" (PDF). Science & Justice. 58 (3): 219–225. doi:10.1016/j.scijus.2017.12.004. PMID 29685303.
  4. ^ Zawilska JB, Wojcieszak J (July 2019). "An expanding world of new psychoactive substances-designer benzodiazepines". Neurotoxicology. 73: 8–16. doi:10.1016/j.neuro.2019.02.015. PMID 30802466. S2CID 73461430.
  5. ^ Clayton T, Poe MM, Rallapalli S, Biawat P, Savić MM, Rowlett JK, Gallos G, Emala CW, Kaczorowski CC, Stafford DC, Arnold LA, Cook JM (2015). "A Review of the Updated Pharmacophore for the Alpha 5 GABA(A) Benzodiazepine Receptor Model". International Journal of Medicinal Chemistry. 2015: 430248. doi:10.1155/2015/430248. PMC 4657098. PMID 26682068.
  6. ^ Chapter 34[dead link]
  7. ^ "Warren County Grand Jury of February 2023 indictments - Royal Examiner". 18 February 2023.
  8. ^ "Eastern District of Virginia | Florida Man Sentenced for Selling Counterfeit Drugs on the Dark Net | United States Department of Justice". 24 August 2021.
  9. ^ "Drug charges filed recently in Madison County". 9 August 2021.
  10. ^ "720 ILCS 570/ Illinois Controlled Substances Act".