Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of kinase inhibitors and other biologically active compounds. Its protected amine group allows for selective reactions in multi-step organic syntheses, making it valuable in drug discovery. Commonly employed in the preparation of indoline-based scaffolds found in anticancer, antiviral, and anti-inflammatory agents. The tert-butyloxycarbonyl (Boc) protection enables compatibility with a wide range of reaction conditions, facilitating peptide coupling and heterocycle formation. Widely applied in medicinal chemistry for building complex nitrogen-containing molecules.