Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) requiring high enantiomeric purity. Its protected hydroxyl and amine functionalities make it ideal for selective reactions in multi-step organic syntheses. Commonly employed in the preparation of beta-amino alcohols and other nitrogen-containing heterocycles. The Boc-protected amine allows for easy deprotection under mild acidic conditions, enabling further functionalization. Widely utilized in medicinal chemistry for drug discovery and process development due to its stability and stereochemical integrity.