Official EU label nameGlossary entry 13899

ISOQUERCITRIN

This record confirms an official common ingredient name for EU cosmetic product labelling. It does not by itself confirm that the substance is permitted, unrestricted or safe.

Global evidence snapshot

The resolved identity has matching regulatory evidence in 0 of 13 indexed market datasets: 0 country records and 0 EU Annex records. Every result and evidence gap is listed below.

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Resolved identifiers

Resolved substance identity

CAS:21637-25-2

EC:244-488-5

Ingredient index records:

ISOQUERCITRIN

Cosmetic functions: ANTIOXIDANT

2-(3,4-dihydroxyphenyl)-3-(.beta.-D-glucofuranosyloxy)-5,7-dihydroxy-4H-1-benzopyran-4-one

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1 matched or reported name

ISOQUERCITRIN

Regulatory evidence across markets

None of the 13 markets tracked here holds an imported rule under the name ISOQUERCITRIN.

That is a statement about this inventory, not about the law: no imported rule is not evidence that a substance is permitted. A rule may exist under a different name, under a CAS or EC number this glossary entry does not carry, or in a dataset not yet imported.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 21637-25-2

CAS 21637-25-2PubChem CID 5484006

Isoquercitrin

Quercetin 3-O-beta-D-glucofuranoside is a quercetin O-glucoside in which a glucofuranosyl residue is attached at position 3 of quercetin via a beta-glycosidic linkage. It has a role as a metabolite. It is a beta-D-glucoside, a tetrahydroxyflavone, a monosaccharide derivative and a quercetin O-glucoside. — ChEBI

IUPAC name: 3-[(2S,3R,4R,5R)-5-[(1R)-1,2-dihydroxyethyl]-3,4-dihydroxyoxolan-2-yl]oxy-2-(3,4-dihydroxyphenyl)-5,7-dihydroxychromen-4-one

Molecular formula: C21H20O12
Molecular weight: 464.4 g/mol
Exact mass: 464.09547607 Da
XLogP3: 0.4
Topological polar surface area: 207.0 Å²
Hydrogen-bond donors: 8
Hydrogen-bond acceptors: 12
Covalent units: 1
Defined stereocentres: 5

Also known as

IsoquercitrosideIsotrifolin0YX10VRV6Jquercetin 3-O-beta-D-glucofuranoside3,3',4',5,7-Pentahydroxyflavone 3-beta-D-glucofuranoside2-(3,4-Dihydroxyphenyl)-3-(beta-D-glucofuranosyloxy)-5,7-dihydroxy-4H-1-benzopyran-4-oneCHEBI:282994H-1-Benzopyran-4-one, 2-(3,4-dihydroxyphenyl)-3-(beta-D-glucofuranosyloxy)-5,7-dihydroxy-

16 more reported names

Flavone, 3,3',4',5,7-pentahydroxy-, 3-beta-D-glucofuranoside2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-4-oxo-4H-chromen-3-yl beta-D-glucofuranosideRefChem:5924quercetin 3-(beta-D-glucofuranoside)ISOQUERCETIN ENZYMATICALLY MODIFIED4H-1-benzopyran-4-one, 2-(3,4-dihydroxyphenyl)-3-(beta-D-glucofuranosyloxy)-5,7-dihydroxy2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-3-((2S,4R,5S)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl)oxychromen-4-one244-488-5Isotrifoliin3-(((2S,3R,4R,5R)-5-((R)-1,2-Dihydroxyethyl)-3,4-dihydroxytetrahydrofuran-2-yl)oxy)-2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-4H-chromen-4-oneC21H20O12CCRIS 70933-[[(2S,3R,4R,5R)-5-[(R)-1,2-Dihydroxyethyl]-3,4-dihydroxytetrahydrofuran-2-yl]oxy]-2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-4H-chromen-4-oneEINECS 244-488-5quercetin 3-O-|A-D-glucofuranosideUNII-0YX10VRV6J

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External database identifiers

ChEBI:CHEBI:28299
EPA DTXSID:DTXSID80904976
PubMed:17003167
PubMed:10852961

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

Additional authoritative substance research

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Cosmetic Ingredient Review safety assessments FDA Global Substance Registration System ILO/WHO International Chemical Safety Cards Japan NITE-CHRIP NIOSH Pocket Guide to Chemical Hazards OECD eChemPortal US EPA CompTox CTX APIs

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Official source and scope

Imported from Commission Implementing Decision (EU) 2025/1175 (dataset version EU 2025/1175). The glossary supplies common ingredient names for the ingredient list required by Article 19(1)(g); it is not an approval or safety list.

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