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CAS 491-80-5

CAS 491-80-5 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 491-80-5
CAS 491-80-5PubChem CID 5280373

Biochanin A

Biochanin A is a member of the class of 7-hydroxyisoflavones that is 7-hydroxyisoflavone which is substituted by an additional hydroxy group at position 5 and a methoxy group at position 4'. A phytoestrogen, it has putative benefits in dietary cancer prophylaxis. It has a role as an antineoplastic agent, a tyrosine kinase inhibitor, an EC 3.5.1.99 (fatty acid amide hydrolase) inhibitor, a plant metabolite and a phytoestrogen. It is a member of 4'-methoxyisoflavones and a member of 7-hydroxyisoflavones. It is a conjugate acid of a biochanin A(1-). — ChEBI

IUPAC name
5,7-dihydroxy-3-(4-methoxyphenyl)chromen-4-one
Molecular formula
C16H12O5
Molecular weight
284.26 g/mol
Exact mass
284.06847348 Da
XLogP3
3.0
Topological polar surface area
76.0 Ų
Hydrogen-bond donors
2
Hydrogen-bond acceptors
5
Covalent units
1
Defined stereocentres
0

Also known as

Biochanin5,7-Dihydroxy-4'-methoxyisoflavone4'-Methylgenistein5,7-Dihydroxy-3-(4-methoxyphenyl)-4H-chromen-4-oneolmelinPratensolBiochanine AGenistein 4-methyl ether
16 more reported names
Biochanin-A5,7-Dihydroxy-3-p-methoxyphenyl-4H-chromen-4-oneNSC-123538CHEBI:17574U13J6U390T5,7-dihydroxy-3-(4-methoxyphenyl)-4H-1-benzopyran-4-oneGenistein 4-MethyletherRefChem:29990207-744-7CHEBI:86004H-1-Benzopyran-4-one, 5,7-dihydroxy-3-(4-methoxyphenyl)-5,7-Dihydrox -4'-methoxyisoflavoneIsoflavone, 5,7-dihydroxy-4'-methoxy-Biochanin A (Standard)5,7-dihydroxy-4'-methoxy-Isoflavone4'-Methoxy-5,7-dihydroxy isoflavone
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External database identifiers

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 491-80-5

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How CAS 491-80-5 is used on this site

CAS 491-80-5 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 491-80-5 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.