Used as an intermediate in pharmaceutical synthesis, particularly in the development of active pharmaceutical ingredients (APIs) where protected amine functionalities are required. The tert-butoxycarbonyl (Boc) group provides stability during reactions and can be easily removed under mild acidic conditions, making it ideal for multi-step synthesis. It is commonly employed in the preparation of kinase inhibitors, anti-inflammatory agents, and other bioactive molecules. Its aromatic amine structure allows for further functionalization via coupling reactions, enabling the construction of complex drug-like structures. Also utilized in research settings for the synthesis of labeled compounds in metabolic studies.