Thiomalic acid, 99% or mercaptosuccinic acid is a dicarboxylic acid containing a thiol functional group. As suggested by its name, it contains an SH group instead of an OH group on malic acid. Salts and esters are known as thiomalates.
T 1625 (OTTO) Thiomalic acid, 99% Cas 70-49-5 - used in the preparation of mercaptosuccinic acid diethyl ester by reaction with ethanol. T 1625 (OTTO) Thiomalic acid, 99% Cas 70-49-5 - used as a brightening agent in metal plating.