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CAS 520-34-3

CAS 520-34-3 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 520-34-3
CAS 520-34-3PubChem CID 5281612

Diosmetin

Diosmetin is a monomethoxyflavone that is the 4'-methyl ether derivative of luteolin. It is a natural product isolated from citrus fruits which exhibits a range of pharmacological activities. It has a role as a tropomyosin-related kinase B receptor agonist, an antioxidant, an antineoplastic agent, a vasodilator agent, an angiogenesis inhibitor, a bone density conservation agent, an anti-inflammatory agent, an apoptosis inducer, a plant metabolite and a cardioprotective agent. It is a monomethoxyflavone, a trihydroxyflavone and a 3'-hydroxyflavonoid. It is functionally related to a luteolin. It is a conjugate acid of a diosmetin-7-olate. — ChEBI

IUPAC name
5,7-dihydroxy-2-(3-hydroxy-4-methoxyphenyl)chromen-4-one
Molecular formula
C16H12O6
Molecular weight
300.26 g/mol
Exact mass
300.06338810 Da
XLogP3
1.7
Topological polar surface area
96.2 Ų
Hydrogen-bond donors
3
Hydrogen-bond acceptors
6
Covalent units
1
Defined stereocentres
0

Also known as

Luteolin 4'-methyl ether4'-MethylluteolinSalinigricoflavonolDiosmetine3',5,7-trihydroxy-4'-methoxyflavone5,7-Dihydroxy-2-(3-hydroxy-4-methoxyphenyl)-4H-1-benzopyran-4-one5,7,3'-Trihydroxy-4'-methoxyflavone5,7-Dihydroxy-2-(3-hydroxy-4-methoxyphenyl)-4-benzopyrone
16 more reported names
4H-1-Benzopyran-4-one, 5,7-dihydroxy-2-(3-hydroxy-4-methoxyphenyl)-Flavone, 3',5,7-trihydroxy-4'-methoxy-CHEBI:4630ISAKNOX X202 WHITENING SECRET ESSENCERefChem:34944GONGJINHYANG SEOL WHITENINGWhoo Gongjinhyang Seol Whitening Jin EssenceISA KNOX WXII PLUS WHITENING REVOLUTION SERUM208-291-85,7-dihydroxy-2-(3-hydroxy-4-methoxyphenyl)-4H-chromen-4-oneHSDB 8101KBioSS_001985KBio2_004553HY-N01255,7-dihydroxy-2-(3-hydroxy-4-methoxy-phenyl)chromen-4-one5,7-Dihydroxy-2-(3-hydroxy-4-methoxyphenyl);-4H-chromen-4-one
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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 520-34-3

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How CAS 520-34-3 is used on this site

CAS 520-34-3 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 520-34-3 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.