Used as an intermediate in organic synthesis, particularly in the development of pharmaceutical compounds. It serves in the preparation of bioactive molecules due to the presence of reactive functional groups—the chloroethyl moiety allows for alkylation reactions, while the thiomorpholine ring can act as a structural scaffold in drug design. Commonly employed in the synthesis of central nervous system agents and antihypertensive drugs. Its hydrochloride salt form enhances solubility and stability, making it suitable for use in aqueous reaction conditions. Also utilized in research settings for modifying peptide structures and developing novel heterocyclic compounds.