The molecule is a sulfur-containing carboxylic acid that is succinic acid bearing two mercapto substituents at positions 2 and 3. A lead chelator used as an antedote to lead poisoning. It has a role as a chelator. It is a dicarboxylic acid, a dithiol and a sulfur-containing carboxylic acid.
(2S,3R)-2,3-bis(sulfanyl)butanedioic acid