Aconitic acid refers to organic compounds with the formula HO2CCH2C(CO2H)=CHCO2H.

A white solid, it is clasified as a tricarboxylic acid.

The conjugate base of cis-aconitic acid, cis-aconitate is an intermediate in the isomerization of citrate to isocitrate in the citric acid cycle.

Aconitic acid was originally isolated from Aconitum napellus by Swiss chemist and apothecary Jacques Peschier in 1820.

[7] Like the conjugate bases of other polycarboxylic acid, acotinic acid forms a variety of coordination complexes.