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Impurities and reference standards

Fumaraldehydic acid

Also known as Malealdehydic acid, (E)-4-oxobut-2-enoic acid, 4-Oxo-2-butenoic acid

CAS 4437-06-3Formula C4H4O3Molar mass 100.07 g/molEC 216-402-6
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Fumaraldehydic acid chemical structure, C4H4O3, CAS 4437-06-3
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
4437-06-3
Formula
C4H4O3
Molar mass
100.07 g/mol
EC number
216-402-6
HS code
291830
Category
Impurities and reference standards

What is Fumaraldehydic acid?

Plain description, key identifiers and synonyms

Fumaraldehydic acid is a chemical substance with the molecular formula C4H4O3 and a molar mass of 100.07 g/mol. Its CAS registry number is 4437-06-3. The IUPAC name is (E)-4-oxobut-2-enoic acid.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(E)-4-oxobut-2-enoic acid
CAS number
4437-06-3 CAS number cross-checkedOther or deprecated CAS: 1575-59-3, 22418-77-5
EC number
216-402-6
Molecular formula
C4H4O3
InChIKey
ZOIRMVZWDRLJPI-OWOJBTEDSA-N
InChI
InChI=1S/C4H4O3/c5-3-1-2-4(6)7/h1-3H,(H,6,7)/b2-1+
Canonical SMILES
O=CC=CC(=O)O
Isomeric SMILES
C(=C/C(=O)O)\C=O

Synonyms

  • Malealdehydic acid
  • (E)-4-oxobut-2-enoic acid
  • 4-Oxo-2-butenoic acid
  • 4-oxobut-2-enoic acid
  • Minodronic Acid Impurity 15
  • 4-Oxoisocrotonic acid
  • 2-Butenoic acid, 4-oxo-, (2E)-
  • (2E)-4-Oxo-2-butenoic acid
  • 3-formylacrylic acid
  • Minodronic Impurity 10
  • 2-Butenoic acid, 4-oxo-
  • ghl.PD_Mitscher_leg0.711
  • (2E)-4-Oxo-2-butenoic acid #
  • 2-Butenoic acid, 4-oxo-, (E)-

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
100.07 g/molcalc.
Exact mass
100.016 Dacalc.
LogP (octanol/water)
-0.17calc.
Topological polar surface area
54.37 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
2calc.
Heavy atoms
7calc.
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.

Fumaraldehydic acid suppliers

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Fumaraldehydic acid price

Indicative price range per kg from live supplier offers

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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

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

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 Fumaraldehydic acid is traded under.

HS 2918.30Indicative HS code

Carboxylic acids with aldehyde or ketone function but without other oxygen function…

World exports in 2024
$813M
−39.8% vs 2023, imports $1.23B
2019 to 2024
Top exporters
  1. China43.3%
  2. India * partner reported10.4%
  3. United States6.8%
Top importers
  1. Singapore33.1%
  2. Germany7.2%
  3. Japan6.9%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Fumaraldehydic acid?

Fumaraldehydic acid is a chemical substance with the molecular formula C4H4O3 and a molar mass of 100.07 g/mol. Its CAS registry number is 4437-06-3. The IUPAC name is (E)-4-oxobut-2-enoic acid.

What is the CAS number of Fumaraldehydic acid?

The CAS registry number of Fumaraldehydic acid is 4437-06-3. Other or deprecated CAS numbers: 1575-59-3, 22418-77-5.

What is the molecular formula and weight of Fumaraldehydic acid?

The molecular formula of Fumaraldehydic acid is C4H4O3 and its molar mass is 100.07 g/mol.

Is Fumaraldehydic acid hazardous?

No GHS hazard classification for Fumaraldehydic 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 Fumaraldehydic acid?

Fumaraldehydic acid is usually classified under HS code 291830 (Carboxylic acids with aldehyde or ketone function but without other oxygen function…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Fumaraldehydic acid?

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

What is the price of Fumaraldehydic acid?

Suppliers quote Fumaraldehydic 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 Fumaraldehydic 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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