C8H12O4
172.18 g/mol
Industrial ChemicalWarning
Diethyl fumarate
CAS623-91-6EC210-819-7
Category
Industrial Chemical
Compound Class
Ester
Primary Use
Comonomer for polymer production
Diethyl fumarate is a diester formed from the condensation of fumaric acid with ethanol. It is primarily used as a comonomer in polymer production, such as with styrene and vinyl chloride.
Comonomer for polymer productionComonomer for polystyreneChemical modifier in polymer synthesis
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
StrongForm Family
Diethyl sulfate
CAS64-67-5
Ethylating agent in chemical synthesis
StrongForm Family
Diethyl oxalate
CAS95-92-1
Solvent and chemical intermediate
StrongForm Family
Diethyl D-tartrate
CAS13811-71-7
research reagent
SimilarStructure SimilarSimilarity 0.80
Ethyl fumarate
CAS2459-05-4
chemical intermediate for research and industrial use
SimilarStructure SimilarSimilarity 0.75
Ethyl crotonate
CAS623-70-1
flavor and fragrance ingredient
ReferenceSame Category
2,6-Dimethoxypyridine
CAS6231-18-1
Chemical intermediate
ReferenceSame Category
P-iodotoluene
CAS624-31-7
organic synthesis intermediate
ReferenceSame Category
Dimethyl maleate
CAS624-48-6
Dienophile for Diels-Alder reactions
Safety Reference
Warning
H302Harmful if swallowed
H315Causes skin irritation
H317May cause an allergic skin reaction
H335May cause respiratory irritation
H371May cause damage to organs
H373May cause damage to organs through prolonged or repeated exposure
H401Toxic to aquatic life
Customs Tariff Classification
The international HS code for Diethyl fumarate (CAS 623-91-6) is 2917.19.
HS code (international, 6-digit)
2917.19
EU CN code (8-digit)
2917 19 80
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
diethyl (E)-but-2-enedioate
InChIKey
IEPRKVQEAMIZSS-AATRIKPKSA-N
SMILES
CCOC(=O)/C=C/C(=O)OCC
Synonyms (24)
- 1,4-diethyl but-2-enedioate
- Anti-Psoriaticum
- Diethyl (2E)-2-butenedioate
- Diethyl fumarate
- Fumaric acid, diethyl ester
- diethyl (2E)-but-2-enedioate
- diethyl (E)-but-2-enedioate
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