Used in pharmaceutical research as a key intermediate in the synthesis of targeted protein degraders, particularly cereblon (CRBN)-based PROTACs (proteolysis-targeting chimeras). Its structure enables conjugation to E3 ubiquitin ligase ligands, facilitating the degradation of disease-causing proteins. The boronic ester group allows for Suzuki-Miyaura cross-coupling, making it valuable in modular drug design for oncology and inflammatory diseases. Commonly employed in medicinal chemistry for structure-activity relationship (SAR) studies due to its stable isoindoline and piperidine-2,6-dione core.