fumaric acid
Also known as trans-but-2-enedioic acid, (2E)-2-butenedioic acid, (E)-2-butenedioic acid, trans-1,2-ethylenedicarboxylic acid, E297, but-2-enedioic acid, (2E)-But-2-enedioic acid, (E)-2-Butenedioate
chemical compound
Chemical data
- Formula
- C4H4O4
- Molecular weight
- 116.07 g/mol
- IUPAC name
- (E)-but-2-enedioate;hydron
- SMILES
- [H+].[H+].C(=C/C(=O)[O-])\C(=O)[O-]
- InChIKey
- VZCYOOQTPOCHFL-OWOJBTEDSA-N
- Polar surface area
- 80.3 Ų
- H-bond donors
- 2
- H-bond acceptors
- 4
- Formal charge
- 0
via PubChem
Article
Fumaric acid or trans-butenedioic acid is an organic compound with the formula HO2CCH=CHCO2H. A white solid, fumaric acid occurs widely in nature. It has a fruit-like taste and has been used as a food additive. Its E number is E297. The salts and esters are known as fumarates. Fumarate can also refer to the C 4H 2O 4 ion (in solution). Fumaric acid is the trans isomer of butenedioic acid, while maleic acid is the cis isomer.
Biosynthesis and occurrence