Date published: 2026-5-2

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HU-331 (CAS 137252-25-6)

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Alternate Names:
Cannabidiol hydroxyquinone; 3-hydroxy-2-[(1R,6R)-3-methyl-6-prop-1-en-2-ylcyclohex-2-en-1-yl]-5-pentylcyclohexa-2,5-diene-1,4-dione
Application:
HU-331 is a hydroxylquinone cannabidiol analog
CAS Number:
137252-25-6
Purity:
≥95%
Molecular Weight:
328.44
Molecular Formula:
C21H28O3
Supplemental Information:
This is classified as a Dangerous Good for transport and may be subject to additional shipping charges.
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
Available in US only.
* Refer to Certificate of Analysis for lot specific data.

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HU-331 is a synthetic cannabinoid that has attention in the research community primarily for its potential as a compound with high affinity for cannabinoid receptors. It is particularly noted for its role in the study of the endocannabinoid system, a complex network of receptors, endogenous ligands, and enzymes that regulate a wide array of physiological processes. Researchers utilize HU-331 in investigations aiming to elucidate the effects of cannabinoids beyond the properties associated with tetrahydrocannabinol (THC). It acts as a potent inhibitor of topoisomerase II, an enzyme critical for DNA replication and cell cycle progression, making it useful in studies of cellular proliferation and gene expression. The compound′s unique structure allows scientists to examine the structural requirements for receptor binding and activity, contributing to the design of new molecules that can selectively interact with cannabinoid receptors.


HU-331 (CAS 137252-25-6) References

  1. A cannabinoid quinone inhibits angiogenesis by targeting vascular endothelial cells.  |  Kogan, NM., et al. 2006. Mol Pharmacol. 70: 51-9. PMID: 16571653
  2. HU-331, a novel cannabinoid-based anticancer topoisomerase II inhibitor.  |  Kogan, NM., et al. 2007. Mol Cancer Ther. 6: 173-83. PMID: 17237277
  3. A cannabinoid anticancer quinone, HU-331, is more potent and less cardiotoxic than doxorubicin: a comparative in vivo study.  |  Kogan, NM., et al. 2007. J Pharmacol Exp Ther. 322: 646-53. PMID: 17478614
  4. HU-331: a cannabinoid quinone, with uncommon cytotoxic properties and low toxicity.  |  Peters, M. and Kogan, NM. 2007. Expert Opin Investig Drugs. 16: 1405-13. PMID: 17714026
  5. Cannabidiol hydroxyquinone-induced apoptosis of splenocytes is mediated predominantly by thiol depletion.  |  Wu, HY. and Jan, TR. 2010. Toxicol Lett. 195: 68-74. PMID: 20184945
  6. Cyclohexa-2,5-diene-1,4-dione-based antiproliferative agents: design, synthesis, and cytotoxic evaluation.  |  Petronzi, C., et al. 2013. J Exp Clin Cancer Res. 32: 24. PMID: 23631805
  7. HU-331 is a catalytic inhibitor of topoisomerase IIα.  |  Regal, KM., et al. 2014. Chem Res Toxicol. 27: 2044-51. PMID: 25409338
  8. HU-331 and Oxidized Cannabidiol Act as Inhibitors of Human Topoisomerase IIα and β.  |  Wilson, JT., et al. 2018. Chem Res Toxicol. 31: 137-144. PMID: 29272108
  9. Monocyclic Quinone Structure-Activity Patterns: Synthesis of Catalytic Inhibitors of Topoisomerase II with Potent Antiproliferative Activity.  |  Waugh, TM., et al. 2020. ChemMedChem. 15: 114-124. PMID: 31778038
  10. Cannabinoid Quinones-A Review and Novel Observations.  |  Kogan, NM., et al. 2021. Molecules. 26: PMID: 33801057
  11. Cannabidiol oxidation product HU-331 is a potential anticancer cannabinoid-quinone: a narrative review.  |  Trac, J., et al. 2021. J Cannabis Res. 3: 11. PMID: 33892826
  12. Cannabinoids as Potential Cancer Therapeutics: The Concentration Conundrum.  |  Carkaci-Salli, N., et al. 2023. Cannabis Cannabinoid Res.. PMID: 36944160

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

HU-331, 1 mg

sc-205345
1 mg
$107.00
US: Only available in the US

HU-331, 5 mg

sc-205345A
5 mg
$837.00
US: Only available in the US

HU 331 crystal color

Asked by: Yogie34
Thank you for your question. Each lot of this chemical comes with a lot-specific Certificate of Analysis which typically describes the color of the chemical. You may request a lot-specific Certificate of Analysis on our website. Alternatively, please contact our Technical Service Department or reach out to your local distributor to inquire about the purity of our most recent lot.
Answered by: Technical Service 4
Date published: 2020-11-17
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Rated 5 out of 5 by from RegalRegal, KM. et al. (PubMed 25409338) reported that HU-331 is a catalytic inhibitor of topoisomerase II . -SCBT Publication Review
Date published: 2015-03-26
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HU-331 is rated 5.0 out of 5 by 1.
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