Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) requiring stereochemical control. Its protected hydroxyl and amine functionalities make it valuable in multi-step organic syntheses, especially for constructing complex molecules like kinase inhibitors, antiviral agents, and central nervous system drugs. The Boc-protected amine allows for selective deprotection and coupling reactions, while the morpholine ring contributes to solubility and bioavailability in drug candidates. Commonly employed in medicinal chemistry for structure-activity relationship (SAR) studies.