Used as an intermediate in organic synthesis, particularly in the preparation of pharmaceutical compounds. It serves as a protected aniline derivative, allowing selective reactions on other functional groups during multi-step syntheses. The tert-butyloxycarbonyl (Boc) group provides stability under various reaction conditions and can be easily removed under mild acidic conditions, making it valuable in peptide and heterocyclic chemistry. Commonly employed in the development of active pharmaceutical ingredients (APIs) where acetylated aromatic amines are required.