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Carboxylic acids and anhydrides

Dihydroxyfumaric acid

Also known as Dihydroxyfumarate, 2-oxo-3,4,4-trihydroxy-3E-butenoic acid, 2,3-Dihydroxyfumaric acid

CAS 133-38-0Formula C4H4O6Molar mass 148.07 g/molEC 205-106-2
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Dihydroxyfumaric acid chemical structure, C4H4O6, CAS 133-38-0
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
133-38-0
Formula
C4H4O6
Molar mass
148.07 g/mol
EC number
205-106-2
HS code
291719
Category
Carboxylic acids and anhydrides

What is Dihydroxyfumaric acid?

Plain description, key identifiers and synonyms

Dihydroxyfumaric acid is a 2-hydroxydicarboxylic acid consisting of fumaric acid having two hydroxy groups at the 2- and 3-positions. It is a 2-hydroxydicarboxylic acid and a C4-dicarboxylic acid. It is functionally related to a fumaric acid. It is a conjugate acid of a dihydroxyfumarate(2-).

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(E)-2,3-dihydroxybut-2-enedioic acid
CAS number
133-38-0 CAS number cross-checkedOther or deprecated CAS: 13096-38-3, 526-84-1
EC number
205-106-2
Molecular formula
C4H4O6
InChIKey
BZCOSCNPHJNQBP-OWOJBTEDSA-N
InChI
InChI=1S/C4H4O6/c5-1(3(7)8)2(6)4(9)10/h5-6H,(H,7,8)(H,9,10)/b2-1+
Canonical SMILES
O=C(O)C(O)=C(O)C(=O)O
Isomeric SMILES
C(=C(/C(=O)O)\O)(\C(=O)O)/O

Synonyms

  • Dihydroxyfumarate
  • 2-oxo-3,4,4-trihydroxy-3E-butenoic acid
  • 2,3-Dihydroxyfumaric acid
  • dihydroxybut-2-enedioic acid
  • (E)-2,3-dihydroxybut-2-enedioic acid
  • Fumaric acid, dihydroxy-
  • dihydroxy-fumaric acid
  • (E)-2,3-Dihydroxyfumaric acid
  • (2E)-dihydroxybut-2-enedioic acid
  • 2-Butenedioic acid, 2,3-dihydroxy-, (E)-
  • (2E)-2,3-dihydroxybut-2-enedioic acid
  • Dihydroxyfumaricacid
  • 2-Butenedioic acid,3-dihydroxy-, (E)-
  • (E)-2,3-Dihydroxy-2-butenedioic acid
  • (2E)-2,3-dihydroxybut-2-enedioate
  • Acido diidrossifumarico
  • 2-Butenedioic acid, 2,3-dihydroxy-, (2E)-
  • DHF
  • dihydroxybut-2-enedioicacid
  • Dihydroxyfumarsaeure
  • (2-)dihydroxyfumarate
  • 3,4,4-trihydroxy-2-oxobut-3-enoic acid
  • Dihydroxy - maleic acid
  • L'Acido diidrossifumarico
  • 4-03-00-01975 (Beilstein Handbook Reference)
Show all 28 synonyms
  • FA 4:2, O4
  • 3,4,4-trihydroxy-2-oxobut-3-enoate
  • (2E)-2,3-Dihydroxy-2-butenedioic 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
148.07 g/molcalc.
Exact mass
148.0008 Dacalc.
LogP (octanol/water)
-0.52calc.
Topological polar surface area
115.1 Ųcalc.
Hydrogen bond donors
4calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
2calc.
Heavy atoms
10calc.
Rings
0calc.
Aromatic rings
0calc.
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.

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.

Dihydroxyfumaric acid suppliers

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Where suppliers are based

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Dihydroxyfumaric 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 Dihydroxyfumaric acid is traded under.

HS 2917.19Indicative HS code

Acyclic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and…

World exports in 2024
$718M
+8.1% vs 2023, imports $915M
2019 to 2024
Top exporters
  1. China46.6%
  2. United States13.7%
  3. Germany10.1%
Top importers
  1. United States16.2%
  2. Denmark11.8%
  3. Germany10.0%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

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

What is Dihydroxyfumaric acid?

Dihydroxyfumaric acid is a 2-hydroxydicarboxylic acid consisting of fumaric acid having two hydroxy groups at the 2- and 3-positions. It is a 2-hydroxydicarboxylic acid and a C4-dicarboxylic acid. It is functionally related to a fumaric acid. It is a conjugate acid of a dihydroxyfumarate(2-).

What is the CAS number of Dihydroxyfumaric acid?

The CAS registry number of Dihydroxyfumaric acid is 133-38-0. Other or deprecated CAS numbers: 13096-38-3, 526-84-1.

What is the molecular formula and weight of Dihydroxyfumaric acid?

The molecular formula of Dihydroxyfumaric acid is C4H4O6 and its molar mass is 148.07 g/mol.

What is Dihydroxyfumaric acid used for?

Known uses and roles of Dihydroxyfumaric acid include building blocks in research and laboratory.

Is Dihydroxyfumaric acid hazardous?

No GHS hazard classification for Dihydroxyfumaric 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 Dihydroxyfumaric acid?

Dihydroxyfumaric acid is usually classified under HS code 291719 (Acyclic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Dihydroxyfumaric acid?

CompoundList lists 1 supplier of Dihydroxyfumaric acid in China. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Dihydroxyfumaric acid?

Suppliers quote Dihydroxyfumaric 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

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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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