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 and bromo-functionalized isoindoline core allow for selective cross-coupling reactions and further derivatization, making it valuable in medicinal chemistry for constructing complex heterocyclic systems. Commonly employed in solid-phase and solution-phase peptide-like synthesis due to the stability and ease of deprotection of the tert-butyl carbamate (Boc) group. Also utilized in the preparation of proteolysis-targeting chimeras (PROTACs) and other targeted therapeutics.