Used as an intermediate in the synthesis of pharmaceutical compounds, particularly in the development of protease inhibitors and antiviral agents. Its chiral structure makes it valuable for creating enantioselective drugs, where the (S)-configuration is critical for biological activity. Commonly employed in medicinal chemistry for constructing peptidomimetics and kinase inhibitors. Also utilized in the preparation of bioactive molecules targeting central nervous system disorders due to its ability to cross the blood-brain barrier. The morpholine ring enhances solubility and metabolic stability in drug candidates.