BEZ235 Tosylate is primarily used in cancer research as a potent inhibitor of the PI3K/mTOR pathway, which plays a critical role in cell growth, proliferation, and survival. It is employed in preclinical studies to investigate its potential in treating various cancers, including breast, lung, and prostate cancer, by targeting and disrupting this signaling pathway. Researchers utilize it to study tumor suppression and to evaluate its efficacy in combination with other therapeutic agents. Additionally, it serves as a valuable tool in understanding the molecular mechanisms of PI3K/mTOR inhibition and its impact on cancer cell behavior.