Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors and other bioactive molecules. Its protected amine group allows for selective reactions in multi-step organic syntheses, making it valuable in medicinal chemistry. The presence of both carboxylic acid and chloro functionalities enables further derivatization, such as coupling reactions or nucleophilic substitutions, facilitating the construction of complex drug-like structures. Commonly employed in solid-phase and solution-phase peptide synthesis where orthogonal protection is required.