Used as an intermediate in the synthesis of targeted cancer therapies, particularly in the development of tyrosine kinase inhibitors. Its structure supports binding to specific enzyme active sites, enhancing selectivity and potency in drug candidates. Commonly employed in research settings for designing irreversible inhibitors due to the presence of reactive chloroacetamide and alkyne functional groups. The alkyne moiety also allows for further modification via click chemistry, enabling conjugation with labels or delivery systems in medicinal chemistry applications.