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CAS 528-48-3

CAS 528-48-3 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 528-48-3
CAS 528-48-3PubChem CID 5281614

Fisetin

Fisetin is a 7-hydroxyflavonol with additional hydroxy groups at positions 3, 3' and 4'. It has a role as a geroprotector, an antioxidant, a metabolite, an EC 5.99.1.3 [DNA topoisomerase (ATP-hydrolysing)] inhibitor, an anti-inflammatory agent and a plant metabolite. It is a 3'-hydroxyflavonoid, a tetrahydroxyflavone and a 7-hydroxyflavonol. It is a conjugate acid of a fisetin(1-). — ChEBI

IUPAC name
2-(3,4-dihydroxyphenyl)-3,7-dihydroxychromen-4-one
Molecular formula
C15H10O6
Molecular weight
286.24 g/mol
Exact mass
286.04773803 Da
XLogP3
2.0
Topological polar surface area
107.0 Ų
Hydrogen-bond donors
4
Hydrogen-bond acceptors
6
Covalent units
1
Defined stereocentres
0

Also known as

2-(3,4-Dihydroxyphenyl)-3,7-dihydroxy-4H-chromen-4-one5-Desoxyquercetin3,3',4',7-Tetrahydroxyflavone3,7,3',4'-TetrahydroxyflavoneFustetFisetholzSuperfustelCotinin
16 more reported names
FietinFustelVisetJunger fustikC.I. Natural Brown 1C.I. 75620Fisidenolon 15212-(3,4-Dihydroxyphenyl)-3,7-dihydroxy-4H-1-benzopyran-4-one7,3',4'-TrihydroxyflavonolNSC-407010NSC-656275OO2ABO9578CHEBI:425675-Desoxy-quercetinRefChem:5992347,3',4'-Flavon-3-ol
Open full PubChem recordPubChem annotations3D structure image
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 528-48-3

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How CAS 528-48-3 is used on this site

CAS 528-48-3 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 528-48-3 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.