2-Methylsuccinic acid is an organic compound with the formula HO2CCH(CH3)CH2CO2H.

A white solid, it is the simplest chiral dicarboxylic acid.

[1] Salts and esters of 2-methylsuccinic acid are called 2-methylsuccinates.

It can be prepared by partial hydrogenation of itaconic acid over Raney nickel.

[2] Alternatively, hydrocyanation of ethyl crotonate affords an intermediate, which converts to 2-methylsuccinic acid after hydrolysis of the ester and nitrile substituents.