Used in organic synthesis as a protected intermediate for the preparation of biologically active compounds, particularly in pharmaceuticals and peptide chemistry. The Boc (tert-butoxycarbonyl) group acts as a protecting group for amines, allowing selective reaction at other functional sites. The carboxylic acid and methoxy functionalities enable further derivatization, such as coupling reactions or esterification, making it valuable in building complex molecules. Commonly employed in the synthesis of heterocycles and drug candidates where controlled deprotection and functional group manipulation are required.