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Flavonoids and polyphenols

Astilbin

Also known as (2R,3R)-2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-3-[(2S,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxy-2,3-dihydrochromen-4-one, (2R,3R)-2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-3-{[(2S,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxy}-3,4-dihydro-2H-1-benzopyran-4-one, (2R,3R)-2-(3,4-Dihydroxyphenyl)-5,7-dihydroxy-3-(((2S,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl)oxy)-3,4-dihydro-2H-1-benzopyran-4-one

CAS 29838-67-3Formula C21H22O11Molar mass 450.40 g/molEC 694-695-3
GHS signal word: Warning. Pictograms: Hazardous to the environment 13 suppliers listed
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Astilbin chemical structure, C21H22O11, CAS 29838-67-3
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
29838-67-3
Formula
C21H22O11
Molar mass
450.40 g/mol
EC number
694-695-3
HS code
293890
Category
Flavonoids and polyphenols

What is Astilbin?

Plain description, key identifiers and synonyms

Astilbin is a flavanone glycoside that is (+)-taxifolin substituted by a alpha-L-rhamnosyl moiety at position 3 via a glycosidic linkage. It has a role as a radical scavenger, an anti-inflammatory agent and a plant metabolite. It is a member of 4'-hydroxyflavanones, an alpha-L-rhamnoside, a tetrahydroxyflavanone, a member of 3'-hydroxyflavanones, a monosaccharide derivative and a flavanone glycoside. It is functionally related to a (+)-taxifolin. It is an enantiomer of a neoastilbin.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(2R,3R)-2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-3-[(2S,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxy-2,3-dihydrochromen-4-one
CAS number
29838-67-3 CAS number cross-checked
EC number
694-695-3
Molecular formula
C21H22O11
InChIKey
ZROGCCBNZBKLEL-MPRHSVQHSA-N
InChI
InChI=1S/C21H22O11/c1-7-15(26)17(28)18(29)21(30-7)32-20-16(27)14-12(25)5-9(22)6-13(14)31-19(20)8-2-3-10(23)11(24)4-8/h2-7,15,17-26,28-29H,1H3/t7-,15-,17+,18+,19+,20-,21-/m0/s1
Canonical SMILES
CC1OC(OC2C(=O)c3c(O)cc(O)cc3OC2c2ccc(O)c(O)c2)C(O)C(O)C1O
Isomeric SMILES
C[C@H]1[C@@H]([C@H]([C@H]([C@@H](O1)O[C@@H]2[C@H](OC3=CC(=CC(=C3C2=O)O)O)C4=CC(=C(C=C4)O)O)O)O)O

Synonyms

  • (2R,3R)-2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-3-[(2S,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxy-2,3-dihydrochromen-4-one
  • (2R,3R)-2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-3-{[(2S,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxy}-3,4-dihydro-2H-1-benzopyran-4-one
  • (2R,3R)-2-(3,4-Dihydroxyphenyl)-5,7-dihydroxy-3-(((2S,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl)oxy)-3,4-dihydro-2H-1-benzopyran-4-one
  • (2R,3R)-2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-3-((2S,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyloxan-2-yl)oxy-2,3-dihydrochromen-4-one
  • 3-0-alpha-1-rhamnosyl-(2R,3R)-dihydroquercetin
  • Taxifolin 3-O-rhamnoside
  • (2R,3R)-2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-3-(((2S,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)chroman-4-one
  • (2R,3R)-3-[(6-deoxy-alpha-L-mannopyranosyl)oxy]-2-(3,4-dihydroxyphenyl)-2,3-dihydro-5,7-dihydroxy-4H-1-benzopyran-4-one
  • 4H-1-Benzopyran-4-one,3-[(6-deoxy-a-L-mannopyranosyl)oxy]-2-(3,4-dihydroxyphenyl)-2,3-dihydro-5,7-dihydroxy-, (2R,3R)-
  • Astilbin from Engelhardtia roxburghiana
  • (2R,3R)-2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-4-oxo-3,4-dihydro-2H-chromen-3-yl 6-deoxy-alpha-L-mannopyranoside
  • Dihydroquercetin 3-rhamnoside
  • Dihydroquercitrin
  • Astilbin (Standard)
  • taxifolin-3-O-rhamnoside
  • ACon1_000616
  • dihydroquercetin-3-O-alpha-LRhap
  • taxifolin 3-alpha-L-rhamnopyranoside
  • (2R,3R)-2-(3,4-dihydroxyphenyl)-5,7-dihydroxy-3-[(2S,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyl-tetrahydropyran-2-yl]oxy-chroman-4-one
  • 2R,3R-dihydroquercetin-3-O-alpha-L-rhamnoside
  • (2R,3R)-2-(3,4-dihydroxyphenyl)-5,7-dihy
  • Astilbin from Engelhardtia roxburghiana, >=98%
  • Dihydroquercetin 3-O-alpha-L-rhamnopyranoside
  • (2R,3R)-3,3',4',5,7-pentahydroxyflavanone-3-alpha-L-rhamnopyranoside
  • (2R,3R)-2-(3,4-Dihydroxyphenyl)-5,7-dihydroxy-4-oxo-3,4-dihydro-2H-1-benzopyran-3-yl 6-deoxy-alpha-L-mannopyranoside
Show all 31 synonyms
  • (2R,3R)-3-[(6-Deoxy-|_-L-mannopyranosyl)oxy]-2-(3,4-dihydroxyphenyl)-2,3-dihydro-5,7-dihydroxy-4H-1-benzopyran-4-one
  • (2R,3S)-3-[(6-Deoxy--L-mannopyranosyl)oxy]-2-(3,4-dihydroxyphenyl)-2,3-dihydro-5,7-dihydroxy-4H-1-benzopyran-4-one, (2R,3S)-Astilbin
  • (2R-trans)-3-((6-Deoxy-alpha-L-mannopyranosyl)oxy)-2-(3,4-dihydroxyphenyl)-2,3-dihydro-5,7-dihydroxy-4H-1-benzopyran-4-one
  • 4H-1-Benzopyran-4-one, 3-((6-deoxy-alpha-L-mannopyranosyl)oxy)-2-(3,4-dihydroxyphenyl)-2,3-dihydro-5,7-dihydroxy-, (2R,3R)-
  • 4H-1-Benzopyran-4-one, 3-((6-deoxy-alpha-L-mannopyranosyl)oxy)-2-(3,4-dihydroxyphenyl)-2,3-dihydro-5,7-dihydroxy-, (2R-trans)-
  • 4H-1-Benzopyran-4-one, 3-[(6-deoxy-alpha-L-mannopyranosyl)oxy]-2-(3,4-dihydroxyphenyl)-2,3-dihydro-5,7-dihydroxy-, (2R,3R)-

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
450.40 g/molcalc.
Exact mass
450.1162 Dacalc.
LogP (octanol/water)
0.04calc.
Topological polar surface area
186.4 Ųcalc.
Hydrogen bond donors
7calc.
Hydrogen bond acceptors
11calc.
Rotatable bonds
3calc.
Heavy atoms
32calc.
Rings
4calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.38calc.
Formal charge
0calc.
Stereocentres
7calc.
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=C1c2ccccc2OC(c2ccccc2)C1OC1CCCCO1

O=C1c2ccccc2OC(c2ccccc2)C1OC1CCCCO1

4 rings, 24 atoms.

17 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H400Very toxic to aquatic life.
Precautionary statements (3)
  • P273Avoid release to the environment.
  • P391Collect spillage.
  • P501Dispose of contents and container in accordance with local regulations.

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

Full safety data and first aid

Astilbin suppliers

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Where suppliers are based

13 suppliers in 2 countries

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Astilbin 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

Roles

  • anti-inflammatory agent
  • antioxidant
  • eukaryotic metabolite
  • metabolite
  • plant metabolite
  • radical scavenger

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

HS 2938.90Indicative HS code

Natural or reproduced by synthesis, other than rutoside (rutin) and its derivatives

World exports in 2024
$1.4B
−8.3% vs 2023, imports $1.35B
2019 to 2024
Top exporters
  1. China49.2%
  2. France * partner reported8.9%
  3. Malaysia6.1%
Top importers
  1. United States22.3%
  2. India * partner reported7.8%
  3. Brazil5.5%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

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

What is Astilbin?

Astilbin is a flavanone glycoside that is (+)-taxifolin substituted by a alpha-L-rhamnosyl moiety at position 3 via a glycosidic linkage. It has a role as a radical scavenger, an anti-inflammatory agent and a plant metabolite.

What is the CAS number of Astilbin?

The CAS registry number of Astilbin is 29838-67-3.

What is the molecular formula and weight of Astilbin?

The molecular formula of Astilbin is C21H22O11 and its molar mass is 450.40 g/mol.

What is Astilbin used for?

Known uses and roles of Astilbin include anti-inflammatory agent, antioxidant, eukaryotic metabolite, metabolite, plant metabolite and 1 more.

Is Astilbin hazardous?

Astilbin carries the GHS signal word "Warning". Main hazards: very toxic to aquatic life. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Astilbin?

Astilbin is usually classified under HS code 293890 (Glycosides, natural or reproduced by synthesis, and their salts, ethers, esters and…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Astilbin?

CompoundList lists 13 suppliers of Astilbin in China and United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Astilbin?

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

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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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