>98% (HPLC), solid

Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
MDL number:
PubChem Substance ID:
Pricing and availability is not currently available.

Quality Level


>98% (HPLC)






DMSO: >10 mg/mL
H2O: insoluble


Sanofi Aventis

SMILES string




InChI key


Gene Information

mouse ... Cnr1(12801), Cnr2(12802)
rat ... Cnr1(25248)


AM251, a CB1 cannabinoid receptor antagonist, has been used in a study to determine its interaction with hippocampal neurons to enhance spatial memory in mice.


10, 50 mg in glass bottle

Biochem/physiol Actions

AM251 is a CB1 cannabinoid receptor antagonist.

Features and Benefits

This compound was developed by Sanofi Aventis. To browse the list of other pharma-developed compounds and Approved Drugs/Drug Candidates, click here.
This compound is featured on the Cannabinoid Receptors page of the Handbook of Receptor Classification and Signal Transduction. To browse other handbook pages, click here.

Other Notes

Salt content may vary.

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


NONH for all modes of transport

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin
Nozomi Asaoka et al.
The Journal of toxicological sciences, 41(6), 813-816 (2016-11-18)
N-[[1-(5-fluoropentyl)-1H-indazol-3-yl]carbonyl]-3-methyl-D-valine methyl ester (5F-ADB) is one of the most potent synthetic cannabinoids and elicits severe psychotic symptoms in humans, sometimes causing death. To investigate the neuronal mechanisms underlying its toxicity, we examined the effects of 5F-ADB on midbrain dopaminergic and...
Ramy Khella et al.
Psychopharmacology, 231(16), 3071-3087 (2014-04-08)
Whilst cannabinoid CB2 receptors were thought to exist predominantly in immune cells in the periphery, the recent discovery of CB2 receptors in the brain has led to an increased interest in the role of these central CB2 receptors. Several studies...
Danilo De Gregorio et al.
Pain, 160(1), 136-150 (2018-08-30)
Clinical studies indicate that cannabidiol (CBD), the primary nonaddictive component of cannabis that interacts with the serotonin (5-HT)1A receptor, may possess analgesic and anxiolytic effects. However, its effects on 5-HT neuronal activity, as well as its impact on models of...
Elahe Mohammadi Vosough et al.
Life sciences, 232, 116670-116670 (2019-07-23)
Migraine is a neurological debilitating disorder. Previous studies have shown that cannabinoid receptor agonists have analgesic effects in various models of pain. In this study, therefore, we investigated anti-nociceptive effects of WIN 55,212-2, and the role of either CB1 or...
Mahsa Shahidi et al.
The Journal of general virology, 95(Pt 11), 2468-2479 (2014-07-24)
Direct-acting antivirals have significantly improved treatment outcomes in chronic hepatitis C (CHC), but side effects, drug resistance and cost mean that better treatments are still needed. Lipid metabolism is closely linked with hepatitis C virus (HCV) replication, and endocannabinoids are...

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