Potency and safety analysis of hemp-derived delta-9 products: The hemp vs. cannabis demarcation problem

Clinical data
ATC code
  • None
Legal status
Legal status
  • Development terminated
  • (±)-N-{1-[Bis(4-chlorophenyl)methyl]-3-azetidinyl}-N-(3,5-difluorophenyl)methanesulfonamide
CAS Number
PubChem CID
CompTox Dashboard (EPA)
Chemical and physical data
Molar mass497.38 g·mol−1
3D model (JSmol)
  • Fc1cc(cc(F)c1)N(C4CN(C(c2ccc(Cl)cc2)c3ccc(Cl)cc3)C4)S(=O)(=O)C
  • InChI=1S/C23H20Cl2F2N2O2S/c1-32(30,31)29(21-11-19(26)10-20(27)12-21)22-13-28(14-22)23(15-2-6-17(24)7-3-15)16-4-8-18(25)9-5-16/h2-12,22-23H,13-14H2,1H3

Drinabant (INN; AVE-1625) is a drug that acts as a selective CB1 receptor antagonist, which was under investigation varyingly by Sanofi-Aventis as a treatment for obesity, schizophrenia, Alzheimer's disease, Parkinson's disease, and nicotine dependence.[1][2][3] Though initially studied as a potential treatment for a variety of different medical conditions, Sanofi-Aventis eventually narrowed down the therapeutic indications of the compound to just appetite suppression. Drinabant reached phase IIb clinical trials for this purpose in the treatment of obesity but was shortly thereafter discontinued,[4] likely due to the observation of severe psychiatric side effects including anxiety, depression, and thoughts of suicide in patients treated with the now-withdrawn rimonabant, another CB1 antagonist that was also under development by Sanofi-Aventis.[5]

In late 2018, the drug was licensed by Opiant Pharmaceuticals, which intends to develop it for the treatment of acute cannabinoid overdose (ACO) as an injectable for administration in an emergency department setting. Opiant claims that ACO is most frequently linked to the ingestion of edibles containing large quantities THC and synthetic cannabinoids that are more potent and less expensive than marijuana. Edibles, sold as brownies, cookies and candies, pose particular risks for children, who often consume these by accident. There are currently no approved treatments for ACO.

Rimonabant was also a cannabinoid developed for prescription drug use that triggered severe psychiatric side effects and was withdrawn from the market.

See also


  1. ^ Lange JH, Kruse CG (2008). "Cannabinoid CB1 receptor antagonists in therapeutic and structural perspectives". The Chemical Record. 8 (3): 156–68. doi:10.1002/tcr.20147. PMID 18563799.
  2. ^ Kwon MO, Herrling P (2005). "List of drugs in development for neurodegenerative diseases. Update September 2005". Neuro-Degenerative Diseases. 2 (2): 61–108. doi:10.1159/000089285. PMID 16909049. S2CID 2553974.
  3. ^ Gerald Litwack (14 August 2009). Anandamide. Academic Press. p. 172. ISBN 978-0-12-374782-2. Retrieved 13 May 2012.
  4. ^ Reggio, Patricia H. (2009). "Toward the design of cannabinoid CB1 receptor inverse agonists and neutral antagonists". Drug Development Research. 70 (8): 585–600. doi:10.1002/ddr.20337. ISSN 0272-4391. S2CID 83478850.
  5. ^ Lee HK, Choi EB, Pak CS (2009). "The current status and future perspectives of studies of cannabinoid receptor 1 antagonists as anti-obesity agents". Current Topics in Medicinal Chemistry. 9 (6): 482–503. doi:10.2174/156802609788897844. PMID 19689362. Archived from the original on 2013-05-22. Retrieved 2019-07-29.