Used as a building block in organic synthesis, particularly in the preparation of heterocyclic compounds and pharmaceuticals. Its bifunctional structure with two carboxylic acid groups linked by a sulfur-containing bridge makes it valuable for forming cyclic structures and chelating agents. It also finds use in the development of polymers and specialty chemicals where sulfur-containing linkages are required. Additionally, it can act as a precursor in the synthesis of certain biologically active molecules and metal-organic frameworks due to its ability to coordinate with metal ions.