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Impurities and reference standards

Isoquercitrin

Also known as Isoquercitroside, Isotrifolin, quercetin 3-O-beta-D-glucofuranoside

CAS 21637-25-2Formula C21H20O12Molar mass 464.38 g/molEC 244-488-5
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Isoquercitrin chemical structure, C21H20O12, CAS 21637-25-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
21637-25-2
Formula
C21H20O12
Molar mass
464.38 g/mol
EC number
244-488-5
HS code
293219
Category
Impurities and reference standards

What is Isoquercitrin?

Plain description, key identifiers and synonyms

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.

Identifiers

Registry numbers, names and line notations, tap to copy

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
CAS number
21637-25-2 CAS number cross-checked
EC number
244-488-5
Molecular formula
C21H20O12
UNII
0YX10VRV6J
MDL number
MFCD29050128
INCI name
ISOQUERCITRIN
InChIKey
OPJZLUXFQFQYAI-GNPVFZCLSA-N
InChI
InChI=1S/C21H20O12/c22-6-12(27)19-16(29)17(30)21(32-19)33-20-15(28)14-11(26)4-8(23)5-13(14)31-18(20)7-1-2-9(24)10(25)3-7/h1-5,12,16-17,19,21-27,29-30H,6H2/t12-,16-,17-,19-,21+/m1/s1
Canonical SMILES
O=c1c(OC2OC(C(O)CO)C(O)C2O)c(-c2ccc(O)c(O)c2)oc2cc(O)cc(O)c12
Isomeric SMILES
C1=CC(=C(C=C1C2=C(C(=O)C3=C(C=C(C=C3O2)O)O)O[C@H]4[C@@H]([C@H]([C@H](O4)[C@@H](CO)O)O)O)O)O

Synonyms

  • Isoquercitroside
  • Isotrifolin
  • quercetin 3-O-beta-D-glucofuranoside
  • 3,3',4',5,7-Pentahydroxyflavone 3-beta-D-glucofuranoside
  • 2-(3,4-Dihydroxyphenyl)-3-(beta-D-glucofuranosyloxy)-5,7-dihydroxy-4H-1-benzopyran-4-one
  • 4H-1-Benzopyran-4-one, 2-(3,4-dihydroxyphenyl)-3-(beta-D-glucofuranosyloxy)-5,7-dihydroxy-
  • Flavone, 3,3',4',5,7-pentahydroxy-, 3-beta-D-glucofuranoside
  • 2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-4-oxo-4H-chromen-3-yl beta-D-glucofuranoside
  • quercetin 3-(beta-D-glucofuranoside)
  • Isoquercetin enzymatically modified
  • 4H-1-benzopyran-4-one, 2-(3,4-dihydroxyphenyl)-3-(beta-D-glucofuranosyloxy)-5,7-dihydroxy
  • 2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-3-((2S,4R,5S)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl)oxychromen-4-one
  • Isotrifoliin
  • 3-(((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-one
  • 3-[[(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-one
  • quercetin 3-O-|A-D-glucofuranoside
  • Rutoside Trihydrate EP Impurity A
  • Quercitin-3-beta-D-glucofuranoside
  • Quercetin-3-o-b-glucopyranoside
  • 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
  • 3-{[(2S,3R,4R,5R)-5-[(1R)-1,2-dihydroxyethyl]-3,4-dihydroxyoxolan-2-yl]oxy}-2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-4H-chromen-4-one
  • Quercetin-3-o-b-d-glucofuranoside
  • Isoquercitrin (Isoquercitroside, Isoquercetin)
  • 2-(3,4-Dihydroxyphenyl)-3-(|_-D-glucofuranosyloxy)-5,7-dihydroxy-4H-1-benzopyran-4-one
  • 2-(3,4-Dihydroxyphenyl)-5,7-dihydroxy-4-oxo-4H-1-benzopyran-3-yl beta-D-glucofuranoside
Show all 26 synonyms
  • 3-[(2S,3R,4R,5R)-5-[(1R)-1,2-dihydroxyethyl]-3,4-dihydroxy-tetrahydrofuran-2-yl]oxy-2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-chromen-4-one

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
464.38 g/molcalc.
Exact mass
464.0955 Dacalc.
LogP (octanol/water)
-0.54calc.
Topological polar surface area
210.5 Ųcalc.
Hydrogen bond donors
8calc.
Hydrogen bond acceptors
12calc.
Rotatable bonds
5calc.
Heavy atoms
33calc.
Rings
4calc.
Aromatic rings
3calc.
Fraction sp3 carbons
0.29calc.
Formal charge
0calc.
Stereocentres
5calc.
Lipinski rule of five
Fails (2 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, O=c1c(OC2CCCO2)c(-c2ccccc2)oc2ccccc12

O=c1c(OC2CCCO2)c(-c2ccccc2)oc2ccccc12

4 rings, 23 atoms.

13 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Isoquercitrin suppliers

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All 12 suppliers
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Where suppliers are based

12 suppliers in 3 countries

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Isoquercitrin price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Use classes: Cosmetics.

Cosmetic ingredient, INCI name ISOQUERCITRIN(antioxidant)

Roles

  • metabolite

Functional uses

  • Antioxidant

Cosmetic functions

  • Antioxidant

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • EU cosmetic ingredient inventory

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Isoquercitrin is traded under.

HS 2932.19Indicative HS code

Compounds containing an unfused furan ring (whether or not hydrogenated) in the…

World exports in 2024
$2.62B
−6.4% vs 2023, imports $2.56B
2019 to 2024
Top exporters
  1. Germany57.9%
  2. Italy11.5%
  3. China10.4%
Top importers
  1. Greece40.4%
  2. Japan16.3%
  3. Germany12.8%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Isoquercitrin is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Isoquercitrin, based on the data on this page

What is 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.

What is the CAS number of Isoquercitrin?

The CAS registry number of Isoquercitrin is 21637-25-2.

What is the molecular formula and weight of Isoquercitrin?

The molecular formula of Isoquercitrin is C21H20O12 and its molar mass is 464.38 g/mol.

What is Isoquercitrin used for?

Use classes: Cosmetics.

Is Isoquercitrin hazardous?

No GHS hazard classification for Isoquercitrin is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Isoquercitrin?

Isoquercitrin is usually classified under HS code 293219 (Compounds containing an unfused furan ring (whether or not hydrogenated) in the…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Isoquercitrin?

CompoundList lists 12 suppliers of Isoquercitrin in China, United States and Spain. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Isoquercitrin?

Suppliers quote Isoquercitrin on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Isoquercitrin

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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