Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the development of active ingredients where stereochemistry plays a critical role. Its hydroxyl and protected amine functionalities allow for selective chemical modifications, making it valuable in constructing complex molecules. Commonly employed in the preparation of protease inhibitors and other bioactive compounds requiring high enantiomeric purity. The tert-butyl carbamate group provides stability during reactions and can be easily removed under mild acidic conditions when needed.