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CAS 21637-25-2

CAS 21637-25-2 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 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 Ų
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

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 21637-25-2

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How CAS 21637-25-2 is used on this site

CAS 21637-25-2 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 21637-25-2 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.