This compound, 4-(4-((tert-butoxycarbonyl)amino)phenyl)butanoic acid, is a specialty chemical intermediate used in organic synthesis, particularly for pharmaceutical development. The Boc-protected aniline moiety allows selective protection of the aromatic amine during multi-step syntheses, while the carboxylic acid group enables facile coupling to other molecules. It is valuable in creating bioactive compounds, such as potential drug candidates targeting specific receptors, and in medicinal chemistry for modifying molecular scaffolds with aryl-alkyl chains. The Boc group can be deprotected under mild acidic conditions to reveal the free amine for further functionalization.