Used primarily as a key intermediate in the synthesis of pharmaceutical agents, particularly in the development of kinase inhibitors for targeted cancer therapies. Its structural features enable selective binding to enzyme active sites, enhancing drug efficacy. Commonly employed in research settings for optimizing metabolic stability and bioavailability in drug candidates. Also utilized in the preparation of radiolabeled derivatives for use in positron emission tomography (PET) imaging studies to track drug distribution and target engagement in vivo.