Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors and other biologically active molecules. Its indoline scaffold is valuable in medicinal chemistry for constructing nitrogen-containing heterocycles. The Boc-protected amine allows for controlled deprotection and further functionalization, making it ideal for stepwise synthesis in drug discovery. Commonly employed in solid-phase and solution-phase peptide-like assembly, it helps build complex molecules with high selectivity and yield.