Used in pharmaceutical research as a potent and selective inhibitor in targeted therapies, particularly in oncology. It functions by binding to specific kinase enzymes involved in signal transduction pathways that drive tumor growth. Due to its high selectivity and cell permeability, it is employed in the development of covalent inhibitors where sustained target suppression is required. Commonly utilized in preclinical studies to evaluate efficacy, pharmacokinetics, and toxicity profiles of novel drug candidates. Its structure enables irreversible binding to cysteine residues on target proteins, making it valuable in the design of covalent drugs with prolonged action. Also serves as a key intermediate in synthesizing proteolysis-targeting chimeras (PROTACs) and other bifunctional molecules aimed at protein degradation.