Used as a chiral building block in the synthesis of pharmaceuticals, particularly in the preparation of active pharmaceutical ingredients (APIs) where stereochemistry is critical. Its protected amine functionality allows for selective reactions in multi-step organic syntheses. Commonly employed in the development of central nervous system agents and protease inhibitors due to its structural compatibility with bioactive molecules. The tert-butyl carbamate group serves as a stable protecting group that can be removed under mild acidic conditions, making it ideal for peptide and peptidomimetic synthesis.