Used primarily as an intermediate in the synthesis of pharmaceuticals and agrochemicals. Its reactive chloroethyl and thioether functional groups make it valuable for constructing heterocyclic compounds and sulfur-containing organic molecules. Commonly employed in the development of antitumor agents and antimicrobial drugs due to its ability to act as an alkylating agent. Also utilized in the preparation of certain dyes and specialty polymers where sulfur incorporation enhances material stability or electronic properties.