Sigma Aldrich (1)
Mercaptosuccinic acid (70-49-5)
2-mercaptosuccinate · 2-thiomalic acid
A thiomalic acid 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.