Used as an intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors and other bioactive molecules. Its structure allows for selective modification in drug design, making it valuable in creating compounds with improved solubility and binding properties. Commonly employed in solid-phase peptide synthesis and as a linker in prodrugs due to the presence of both carboxylic acid and protected amine functionalities. Also utilized in the preparation of sulfonamide-based therapeutic agents where controlled activation or targeted delivery is required.