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Aromatic building blocks

3-Methylanthralin

Also known as 3-Methyl-1,8,9-anthracenetriol, Purified araroba, Chrysophanic acid anthranol

CAS 491-59-8Formula C15H12O3Molar mass 240.26 g/mol
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3-Methylanthralin chemical structure, C15H12O3, CAS 491-59-8
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
491-59-8
Formula
C15H12O3
Molar mass
240.26 g/mol
HS code
290729
Category
Aromatic building blocks

What is 3-Methylanthralin?

Plain description, key identifiers and synonyms

Chrysarobin is an extract of Goa powder, a complex mixture of reduction products of chrysophanic acid, emodin, and emodin monomethyl ether, used locally in ringworm, psoriasis, and eczema.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
3-methylanthracene-1,8,9-triol
CAS number
491-59-8 CAS number cross-checked
Molecular formula
C15H12O3
UNII
0433FJV3CI
InChIKey
JBGKVNQFVAJOGC-UHFFFAOYSA-N
InChI
InChI=1S/C15H12O3/c1-8-5-10-7-9-3-2-4-11(16)13(9)15(18)14(10)12(17)6-8/h2-7,16-18H,1H3
SMILES (canonical and isomeric)
CC1=CC2=C(C(=C1)O)C(=C3C(=C2)C=CC=C3O)O

Synonyms

  • 3-Methyl-1,8,9-anthracenetriol
  • Purified araroba
  • Chrysophanic acid anthranol
  • 1,8,9-Trihydroxy-3-methylanthracene
  • 9-hydroxy chrysarobin
  • 1,8-dihydroxy-3-methyl-9(10H)-anthracenone
  • Chrysarobin
  • 3-methylanthracene-1,8,9-triol
  • 1,8,9-Anthracenetriol, 3-methyl-
  • 3-Methyl-1,8,9-trihydroxyanthracene
  • 1,8-Dihydroxy-3-methylanthron
  • Purified goa powder
  • 3-Methyl-1,8-dihydroxy-9,10-dihydro-9-oxoanthracen
  • Chrysophansaureanthranol
  • 4-06-00-07604 (Beilstein Handbook Reference)

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
240.26 g/molcalc.
Exact mass
240.0786 Dacalc.
LogP (octanol/water)
3.42calc.
Topological polar surface area
60.69 Ųcalc.
Hydrogen bond donors
3calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
0calc.
Heavy atoms
18calc.
Rings
3calc.
Aromatic rings
3calc.
Fraction sp3 carbons
0.07calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 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, c1ccc2cc3ccccc3cc2c1

c1ccc2cc3ccccc3cc2c1

3 rings, 14 atoms, the Anthracene ring system.

1,181 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.

3-Methylanthralin suppliers

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3-Methylanthralin price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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Uses and applications

What the substance is used for, by industry and function

Pharmacological actions

  • Anti-Inflammatory Agents, Non-Steroidal
  • Carcinogens

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 3-Methylanthralin is traded under.

HS 2907.29Indicative HS code

Polyphenols, phenol-alcohols, other

World exports in 2024
$535M
−27.0% vs 2023, imports $565M
2019 to 2024
Top exporters
  1. India * partner reported17.7%
  2. Germany16.5%
  3. Japan15.8%
Top importers
  1. United States13.1%
  2. Japan8.0%
  3. Belgium7.9%

* Partner reported figures, a lower bound.

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

The HS code shown for 3-Methylanthralin is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 3-Methylanthralin, based on the data on this page

What is 3-Methylanthralin?

Chrysarobin is an extract of Goa powder, a complex mixture of reduction products of chrysophanic acid, emodin, and emodin monomethyl ether, used locally in ringworm, psoriasis, and eczema.

What is the CAS number of 3-Methylanthralin?

The CAS registry number of 3-Methylanthralin is 491-59-8.

What is the molecular formula and weight of 3-Methylanthralin?

The molecular formula of 3-Methylanthralin is C15H12O3 and its molar mass is 240.26 g/mol.

What is 3-Methylanthralin used for?

Known uses and roles of 3-Methylanthralin include building blocks in research and laboratory, screening compounds in research and laboratory, anti-inflammatory agents, non-steroidal and carcinogens.

Is 3-Methylanthralin hazardous?

No GHS hazard classification for 3-Methylanthralin 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 3-Methylanthralin?

3-Methylanthralin is usually classified under HS code 290729 (Polyphenols, phenol-alcohols, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 3-Methylanthralin?

Post a free request on CompoundList and suppliers of 3-Methylanthralin will send you quotes. Your contact details stay private until you accept a quote.

What is the price of 3-Methylanthralin?

Suppliers quote 3-Methylanthralin 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 3-Methylanthralin

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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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