AZ191 is primarily used in research and development within the field of oncology. It serves as a potent and selective inhibitor of specific kinases that are involved in cancer cell proliferation and survival. By targeting these kinases, AZ191 helps in studying the pathways and mechanisms that drive tumor growth, making it a valuable tool in the discovery of potential anticancer therapies. Its application extends to preclinical studies where it is used to evaluate the efficacy and safety of new therapeutic agents, contributing to the advancement of personalized medicine and targeted cancer treatments.