Used in pharmaceutical research as a key intermediate in the synthesis of selective kinase inhibitors, particularly for targeting inflammatory and oncogenic signaling pathways. Its structure enables conjugation in prodrug formulations, enhancing cellular uptake and bioavailability. Also employed in the development of targeted protein degraders (e.g., PROTACs) due to its ability to link binding motifs while maintaining solubility and stability. Widely applied in medicinal chemistry for optimizing drug candidates in preclinical studies.