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Chemical substance record

Fisetin

528-48-3C15H10O6286.239 g/mol
Organic/Inorganic Small MoleculeChEBI source record

A 7-hydroxyflavonol with additional hydroxy groups at positions 3, 3' and 4'. — ChEBI

Safety references

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Identity & molecular properties

Source-linked values
CAS number528-48-3ChEBI ↗
Molecular formulaC15H10O6ChEBI ↗
Molar mass286.239 g/molChEBI ↗
Monoisotopic mass286.04774 DaChEBI ↗
Formal charge0ChEBI ↗
ChEBI identifierCHEBI:42567ChEBI ↗

Cross-source molecular data

PubChem
Molar mass286.24 g/molPubChem ↗
Exact mass286.04773803 DaPubChem ↗
Computed XLogP2PubChem ↗
Topological polar surface area (Ų)107PubChem ↗
H-bond donors4PubChem ↗
H-bond acceptors6PubChem ↗
Rotatable bonds1PubChem ↗

PubChem computed values are shown separately from the ChEBI record. An exact InChIKey match was used to connect the records. Molecular descriptors do not describe a supplied product’s purity, particle size or performance.

Names & structural identifiers

Copy any identifier
fisetin
2-(3,4-dihydroxyphenyl)-3,7-dihydroxy-4H-chromen-4-one
XHEFDIBZLJXQHF-UHFFFAOYSA-N
O=c1c(O)c(-c2ccc(O)c(O)c2)oc2cc(O)ccc12
InChI=1S/C15H10O6/c16-8-2-3-9-12(6-8)21-15(14(20)13(9)19)7-1-4-10(17)11(18)5-7/h1-6,16-18,20H

Names & synonyms

2-(3,4-dihydroxyphenyl)-3,7-dihydroxy-4H-chromen-4-one

Names are supplied by ChEBI. Trade names and related synonyms may describe a broader product context.

Classification & relationships

ChEBI ontology
3'-hydroxyflavonoidChEBI parent class · 27741 ↗tetrahydroxyflavoneChEBI parent class · 38684 ↗7-hydroxyflavonolChEBI parent class · 52267 ↗
organic molecular entity

Roles recorded in ChEBI

geroprotectorantioxidantantiviral agentmetaboliteantineoplastic agentEC 5.99.1.3 [DNA topoisomerase (ATP-hydrolysing)] inhibitoranti-inflammatory agentplant metabolite

Database role annotations describe reported biological or chemical roles; they are not product approvals or recommendations for use.

Mass ↔ amount of substance

Calculated from sourced mass
Equivalent amount
0.00349358 mol

Uses 286.239 g/mol from ChEBI. Assumes the substance described by this record; no purity or concentration correction is applied.

Elemental composition

Theoretical mass fractions
C
Carbon · 15 atoms
62.94%
O
Oxygen · 6 atoms
33.54%
H
Hydrogen · 10 atoms
3.52%

Calculated theoretical mass fractions from the reported formula and PubChem periodic-table atomic masses. These are not assay or purity results.

Research & patent references

Selected source associations
Small molecule activators of sirtuins extend Saccharomyces cerevisiae lifespan. ↗Nature · 2003 Sep 11 · PMID 12939617
Sirtuin activators mimic caloric restriction and delay ageing in metazoans. ↗Nature · 2004 Aug 5 · PMID 15254550
CN102028680 · Patent reference ↗Patent cross-reference supplied by ChEBI. Association alone does not establish claim scope.
US2010010078 · Patent reference ↗Patent cross-reference supplied by ChEBI. Association alone does not establish claim scope.
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Sources & record history

Checked 27 Sep 2026
EMBL-EBI ChEBI · CHEBI:42567

Release 255, 9 September 2026. ChEBI three-star (manually annotated) source entry. View original record ↗ · CC BY 4.0

NCBI PubChem · CID 5281614 · retrieved 2026-09-27

PubCAS formats source data, connects references and computes explicitly labelled conversions. CAS cross-references are supplied by ChEBI; they do not constitute CAS verification or endorsement.

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