Used as a key intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors for cancer treatment. Its structure allows for selective modification, making it valuable in creating bioactive molecules with improved potency and selectivity. Commonly employed in medicinal chemistry research for constructing isoindolinone-based scaffolds that exhibit antitumor and anti-inflammatory activities. Also utilized in the preparation of fluorescent probes due to its favorable photophysical properties in certain derivatives.