Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors. Its structure allows for selective functionalization, making it valuable in constructing complex heterocyclic systems. Commonly employed in medicinal chemistry for modifying bioactive molecules to enhance potency and selectivity. Also utilized in the preparation of proteolysis-targeting chimeras (PROTACs) due to its ability to link targeting ligands with E3 ligase binders. Suitable for solid-phase and solution-phase synthesis in drug discovery research.