CP-466722 is primarily utilized in research settings as a potent inhibitor of ATM kinase, a key enzyme involved in the cellular response to DNA damage. Its application is significant in studying the mechanisms of DNA repair pathways and understanding how cells respond to genotoxic stress. Researchers use this compound to explore the role of ATM kinase in cancer biology, as its inhibition can help identify potential therapeutic targets for cancer treatment. Additionally, CP-466722 is employed in experiments to investigate the sensitization of cancer cells to radiation and chemotherapy, providing insights into improving the efficacy of existing cancer therapies. Its use is confined to laboratory studies and preclinical research, contributing to advancements in molecular biology and oncology.