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Aromatic building blocks

Hydrangeic acid

Also known as 3,4'-dihydroxystilbene-2-carboxylic acid, 2-Stilbenecarboxylic acid, 3,4'-dihydroxy-, Benzoic acid, 2-hydroxy-6-(2-(4-hydroxyphenyl)ethenyl)-

CAS 491-79-2Formula C15H12O4Molar mass 256.26 g/mol
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Hydrangeic acid chemical structure, C15H12O4, CAS 491-79-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
491-79-2
Formula
C15H12O4
Molar mass
256.26 g/mol
HS code
291829
Category
Aromatic building blocks

What is Hydrangeic acid?

Plain description, key identifiers and synonyms

hydrangeic acid has been reported in Hydrangea serrata and Hydrangea macrophylla.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-hydroxy-6-[(E)-2-(4-hydroxyphenyl)ethenyl]benzoic acid
CAS number
491-79-2Other or deprecated CAS: 113428-99-2
Molecular formula
C15H12O4
UNII
GYE4WJ5J43
InChIKey
UWXXIBUTKVUHTR-QPJJXVBHSA-N
InChI
InChI=1S/C15H12O4/c16-12-8-5-10(6-9-12)4-7-11-2-1-3-13(17)14(11)15(18)19/h1-9,16-17H,(H,18,19)/b7-4+
Canonical SMILES
O=C(O)c1c(O)cccc1C=Cc1ccc(O)cc1
Isomeric SMILES
C1=CC(=C(C(=C1)O)C(=O)O)/C=C/C2=CC=C(C=C2)O

Synonyms

  • 3,4'-dihydroxystilbene-2-carboxylic acid
  • 2-Stilbenecarboxylic acid, 3,4'-dihydroxy-
  • Benzoic acid, 2-hydroxy-6-(2-(4-hydroxyphenyl)ethenyl)-
  • Benzoic acid, 2-hydroxy-6-((1E)-2-(4-hydroxyphenyl)ethenyl)-
  • (E)-2-Hydroxy-6-(4-hydroxystyryl)benzoic acid
  • 2-hydroxy-6-[(E)-2-(4-hydroxyphenyl)ethenyl]benzoic acid
  • 2-Hydroxy-6-(4-hydroxystyryl)benzoic acid
  • 2-Hydroxy-6-(2-(4-hydroxyphenyl)ethenyl)benzoic acid
  • hydrangeaic acid

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
256.26 g/molcalc.
Exact mass
256.0736 Dacalc.
LogP (octanol/water)
2.97calc.
Topological polar surface area
77.76 Ųcalc.
Hydrogen bond donors
3calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
3calc.
Heavy atoms
19calc.
Rings
2calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0calc.
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, C(=Cc1ccccc1)c1ccccc1

C(=Cc1ccccc1)c1ccccc1

2 rings, 14 atoms, the Stilbene ring system.

2,005 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.

Hydrangeic acid suppliers

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Hydrangeic acid 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

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 Hydrangeic acid is traded under.

HS 2918.29Indicative HS code

Carboxylic acids, (with phenol function but without other oxygen function), their anhydrides, halides…

World exports in 2024
$861M
+0.9% vs 2023, imports $892M
2019 to 2024
Top exporters
  1. China30.5%
  2. South Korea18.3%
  3. Switzerland * partner reported13.3%
Top importers
  1. United States14.7%
  2. Germany13.3%
  3. Japan10.3%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

Quick answers about Hydrangeic acid, based on the data on this page

What is Hydrangeic acid?

hydrangeic acid has been reported in Hydrangea serrata and Hydrangea macrophylla.

What is the CAS number of Hydrangeic acid?

The CAS registry number of Hydrangeic acid is 491-79-2. Other or deprecated CAS numbers: 113428-99-2.

What is the molecular formula and weight of Hydrangeic acid?

The molecular formula of Hydrangeic acid is C15H12O4 and its molar mass is 256.26 g/mol.

What is Hydrangeic acid used for?

Known uses and roles of Hydrangeic acid include building blocks in research and laboratory and screening compounds in research and laboratory.

Is Hydrangeic acid hazardous?

No GHS hazard classification for Hydrangeic acid 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 Hydrangeic acid?

Hydrangeic acid is usually classified under HS code 291829 (Carboxylic acids with phenol function but without other oxygen function, their…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Hydrangeic acid?

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

What is the price of Hydrangeic acid?

Suppliers quote Hydrangeic acid 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 Hydrangeic acid

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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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