1071381 USP

Biochanin A

United States Pharmacopeia (USP) Reference Standard

Synonym: 4′-Methylgenistein, 5,7-Dihydroxy-4′-methoxyisoflavone, Genistein 4′-methyl ether, Olmelin

  • CAS Number 491-80-5

  • Empirical Formula (Hill Notation) C16H12O5

  • Molecular Weight 284.26

  •  Beilstein/REAXYS Number 278107

  •  MDL number MFCD00006839

  •  PubChem Substance ID 329749113

  •  NACRES NA.24



Related Categories Analytical Standards, Analytical/Chromatography, Pharmacopeia & Metrological Institutes Standards, USP Standards, USP Standards A - B More...
grade   pharmaceutical primary standard
mfr. no.   USP
mp   210-213 °C (lit.)
Featured Industry   Pharmaceutical (small molecule)
SMILES string   COc1ccc(cc1)C2=COc3cc(O)cc(O)c3C2=O
InChI   1S/C16H12O5/c1-20-11-4-2-9(3-5-11)12-8-21-14-7-10(17)6-13(18)15(14)16(12)19/h2-8,17-18H,1H3


General description

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pharmacopoeia.
For further information and support please go to the website of the issuing Pharmacopoeia.

Biochem/physiol Actions

Biochanin A is an isoflavone phytoestrogen found in red clover (Trifolium pratense) that is a selective agonist at ER-β estrogen receptors, and may have chemopreventive efficacy against breast cancer. In line with its low activity at ER-α estrogen receptors, it is essentially devoid of uterotrophic activity. Biochanin A is also a ligand for the aryl hydrocarbon receptor (AhR). It reduces arterial resistance and enhances microcirculation perhaps via effects on potassium and/or calcium ion channels. Induction of sulfotransferases for xenobiotic detoxification has been proposed as a mechanism of its cancer preventive effects.

Analysis Note

These products are for test and assay use only. They are not meant for administration to humans or animals and cannot be used to diagnose, treat, or cure diseases of any kind.  ​

Other Notes

Sales restrictions may apply.

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

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