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Carboxylic acids and anhydrides

Mesaconic acid

Also known as 2-Methylfumaric acid, 2-Butenedioic acid, 2-methyl-, (2E)-, Fumaric acid, methyl-

CAS 498-24-8Formula C5H6O4Molar mass 130.10 g/molEC 207-859-2
GHS signal word: Warning. Pictograms: Harmful or irritant 4 suppliers listed
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Mesaconic acid chemical structure, C5H6O4, CAS 498-24-8
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
498-24-8
Formula
C5H6O4
Molar mass
130.10 g/mol
EC number
207-859-2
HS code
291719
Category
Carboxylic acids and anhydrides

What is Mesaconic acid?

Plain description, key identifiers and synonyms

Mesaconic acid is a dicarboxylic acid consisting of fumaric acid having a methyl substituent at the 2-position. It has a role as a plant metabolite and a human metabolite. It is a dicarboxylic fatty acid and a dicarboxylic acid. It is functionally related to a fumaric acid. It is a conjugate acid of a mesaconate(2-).

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(E)-2-methylbut-2-enedioic acid
CAS number
498-24-8 CAS number cross-checkedOther or deprecated CAS: 498-23-7
EC number
207-859-2
Molecular formula
C5H6O4
UNII
90UTM639KK
MDL number
MFCD00002653
InChIKey
HNEGQIOMVPPMNR-NSCUHMNNSA-N
InChI
InChI=1S/C5H6O4/c1-3(5(8)9)2-4(6)7/h2H,1H3,(H,6,7)(H,8,9)/b3-2+
Canonical SMILES
CC(=CC(=O)O)C(=O)O
Isomeric SMILES
C/C(=C\C(=O)O)/C(=O)O

Synonyms

  • 2-Methylfumaric acid
  • 2-Butenedioic acid, 2-methyl-, (2E)-
  • Fumaric acid, methyl-
  • (2E)-2-Methylbut-2-enedioic acid
  • Citronic acid
  • (E)-2-methylbut-2-enedioic acid
  • trans-2-Methyl-2-butenedioic acid
  • trans-1-Propene-1,2-dicarboxylic acid
  • Kyselina mesakonova
  • Butenedioic acid, methyl-, (E)-
  • 2-Butenedioic acid, 2-methyl-, (E)-
  • (E)-Citraconic acid
  • 2-methyl-2E-butenedioic acid
  • (2E)-2-Methyl-2-butenedioic acid
  • 4-02-00-02231 (Beilstein Handbook Reference)
  • 2-Butenedioic acid, 2-methyl-, (E)-(9CI)
  • Methylfumaric acid
  • mesaconate
  • 2-methylbut-2-enedioic acid
  • (E)-2-Methyl-2-butenedioic acid
  • 2-methylfumarate
  • (E)-Citraconate
  • methylfumarate
  • (E)-2-methyl-but-2-enedioic acid
  • Citronate
Show all 34 synonyms
  • Mesaconic acid, 99%
  • (2E)-2-Methyl
  • trans-2-Methyl-2-butenedioate
  • (2E)-2-Methyl-2-butenedioate
  • Mesaconic acid, mesaconate
  • trans-1-Propene-1,2-dicarboxylate
  • (2E)-2-Methyl-2-butenedioic acid #
  • 2-Butenedioic acid, 2-methyl-, (E)- (9CI)
  • FB1827E3-2A34-43A5-BDDC-481FC6606513

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
130.10 g/molcalc.
Exact mass
130.0266 Dacalc.
LogP (octanol/water)
0.1calc.
Topological polar surface area
74.6 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
2calc.
Heavy atoms
9calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.2calc.
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

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (16)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • 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

Mesaconic acid suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 4 suppliers
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Where suppliers are based

4 suppliers in 4 countries

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Mesaconic acid price

Indicative price range per kg from live supplier offers

No published prices right now

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Uses and applications

What the substance is used for, by industry and function

Roles

  • animal metabolite
  • eukaryotic metabolite
  • human metabolite
  • mammalian metabolite
  • metabolite
  • plant metabolite

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Mesaconic 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 Mesaconic acid is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Mesaconic acid?

Mesaconic acid is a dicarboxylic acid consisting of fumaric acid having a methyl substituent at the 2-position. It has a role as a plant metabolite and a human metabolite. It is a dicarboxylic fatty acid and a dicarboxylic acid. It is functionally related to a fumaric acid. It is a conjugate acid of a mesaconate(2-).

What is the CAS number of Mesaconic acid?

The CAS registry number of Mesaconic acid is 498-24-8. Other or deprecated CAS numbers: 498-23-7.

What is the molecular formula and weight of Mesaconic acid?

The molecular formula of Mesaconic acid is C5H6O4 and its molar mass is 130.10 g/mol.

What is Mesaconic acid used for?

Known uses and roles of Mesaconic acid include building blocks in research and laboratory, animal metabolite, eukaryotic metabolite, human metabolite, mammalian metabolite and 2 more.

Is Mesaconic acid hazardous?

Mesaconic acid carries the GHS signal word "Warning". Main hazards: causes skin irritation, causes serious eye irritation, may cause respiratory irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Mesaconic acid?

Mesaconic 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 Mesaconic acid?

CompoundList lists 4 suppliers of Mesaconic acid in China, Hong Kong, Ukraine 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 Mesaconic acid?

Suppliers quote Mesaconic 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 Mesaconic 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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