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Chemical substance record

Galangin

548-83-4C15H10O5270.24 g/mol
Organic/Inorganic Small MoleculeChEBI source record

A 7-hydroxyflavonol with additional hydroxy groups at positions 3 and 5 respectively; a growth inhibitor of breast tumor cells. — ChEBI

Safety references

Safety documents & references

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Identity & molecular properties

Source-linked values
CAS number548-83-4ChEBI ↗
Molecular formulaC15H10O5ChEBI ↗
Molar mass270.24 g/molChEBI ↗
Monoisotopic mass270.05282 DaChEBI ↗
Formal charge0ChEBI ↗
ChEBI identifierCHEBI:5262ChEBI ↗

Cross-source molecular data

PubChem
Molar mass270.24 g/molPubChem ↗
Exact mass270.05282342 DaPubChem ↗
Computed XLogP2.3PubChem ↗
Topological polar surface area (Ų)87PubChem ↗
H-bond donors3PubChem ↗
H-bond acceptors5PubChem ↗
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
galangin
3,5,7-trihydroxy-2-phenyl-4H-chromen-4-one
VCCRNZQBSJXYJD-UHFFFAOYSA-N
O=c1c(O)c(-c2ccccc2)oc2cc(O)cc(O)c12
InChI=1S/C15H10O5/c16-9-6-10(17)12-11(7-9)20-15(14(19)13(12)18)8-4-2-1-3-5-8/h1-7,16-17,19H

Names & synonyms

3,5,7-trihydroxy-2-phenyl-4H-chromen-4-one

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

Classification & relationships

ChEBI ontology
trihydroxyflavoneChEBI parent class · 27116 ↗7-hydroxyflavonolChEBI parent class · 52267 ↗
organic molecular entity

Roles recorded in ChEBI

antimicrobial agentEC 3.1.1.3 (triacylglycerol lipase) inhibitorplant 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
0.00370041 mol

Uses 270.24 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
66.67%
O
Oxygen · 5 atoms
29.60%
H
Hydrogen · 10 atoms
3.73%

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
Galangin inhibits tumor growth and metastasis of B16F10 melanoma. ↗Journal of cellular biochemistry · 2013 Jan · PMID 22887049
Anticomplement and antimicrobial activities of flavonoids from Entada phaseoloides. ↗Natural product communications · 2012 Jul · PMID 22908567
CN101810812 · Patent reference ↗Patent cross-reference supplied by ChEBI. Association alone does not establish claim scope.
KR20090124397 · 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:5262

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

NCBI PubChem · CID 5281616 · 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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