The maleate ion is the ionized form of maleic acid.

Maleic acid is more soluble in water than fumaric acid.

Ozonolysis of maleic acid is also effective.

Maleic acid is a less stable molecule than fumaric acid.

The major industrial use of maleic acid is its conversion to fumaric acid.

Maleic acid esters are also called maleates, for instance dimethyl maleate.

This contrasts with the cis isomer, maleic acid.

Maleic acid is an industrial raw material for the production of glyoxylic acid by ozonolysis.

Maleic acid with a cis-double bond forms the dibromide as a mixture of enantiomers:

In 2006 a new crystal form was discovered of maleic acid 124 years after the first crystal form was studied.

This white crystalline compound is one of two isomeric unsaturated dicarboxylic acids, the other being maleic acid.

Maleic acid may be used to form acid addition salts with drugs to make them more stable, such as indacaterol maleate.

Maleic acid, being electrophilic, participates as a dienophile in many Diels-Alder reactions.

Note that the photoisomerization of maleic acid to fumaric acid with bromine is also bimolecular.

Cyclohexene is also a precursor to adipic acid, maleic acid, dicyclohexyladipate, and cyclohexeneoxide.

Fumaric acid does not combust in a bomb calorimeter under conditions where maleic acid deflagrates smoothly.

With it they explained the observed stereospecific trans-additions in brominations of maleic acid and fumaric acid.

Maleic acid is an organic compound that is a dicarboxylic acid, a molecule with two carboxyl groups.

The maleic acid acid salt of the Levorotatory isomer is sold as the prescription drug Rotoxamine.

An illustrative example of a hydrogenation reaction is the addition of hydrogen to maleic acid to form succinic acid.

Maleic acid is a chemical manufactured on a very large scale in the chemical industry and is a salt forming component in medicine.

The cis isomer is called maleic acid and the trans isomer fumaric acid.

The most common way to synthesize uracil is by the condensation of maleic acid with urea in fuming sulfuric acid as seen below also.

N-Ethylmaleimide (NEM) is an organic compound that is derived from maleic acid.

Common industrial routes include hydrogenation of maleic acid, oxidation of 1,4-butanediol, and carbonylation of ethylene glycol.