Fumaric acid has four carbons. Its chemical formula is C4H4O4.
Fumaric acid | Grupo Pochteca
Fumaric acid is a white, organic compound that is found in nature and has a fruit-like taste. It is also known as trans-butenedioic acid. Fumaric acid is used as a food additive and has the E number E297.
Fumaric acid is produced through a chemical process that involves isomerizing maleic acid or maleic anhydride. Maleic acid is a linear four-carbon molecule with a double bond between the central carbon atoms.