Thiomorpholine 1,1-dioxide hydrochloride is primarily used in organic synthesis as a versatile intermediate. It plays a significant role in the development of pharmaceuticals, particularly in the creation of compounds with potential therapeutic effects. Its structure is often utilized in the synthesis of heterocyclic compounds, which are essential in drug discovery and development. Additionally, it is employed in the preparation of ligands for catalysis, aiding in various chemical reactions. Its application extends to research settings, where it is used to study chemical reactivity and develop new synthetic methodologies.