Used as an intermediate in organic synthesis, particularly in the preparation of heterocyclic compounds and sulfur-containing pharmaceuticals. Its functional groups enable participation in nucleophilic reactions, making it valuable in the development of agrochemicals and bioactive molecules. Commonly employed in the synthesis of thiourea derivatives and other sulfur-based ligands for coordination chemistry. Also finds use in the modification of peptides and proteins due to its thioether and carboxylic acid reactivity.