Used as an intermediate in the synthesis of pharmaceuticals, particularly in the development of antithyroid and antidiabetic agents. It serves as a building block in organic reactions where the thiourea moiety acts as a ligand or reagent in metal-catalyzed transformations. Also employed in the preparation of heterocyclic compounds due to its ability to undergo cyclization under specific reaction conditions. Its derivatives are explored for biological activity, including antimicrobial and antitumor properties, making it valuable in medicinal chemistry research.