PWT33597, also known as VDC-597, is an orally bioavailable dual inhibitor of phosphatidylinositide 3-kinase (PI3K) alpha and mammalian target of rapamycin (mTOR) kinase with potential antineoplastic activity. PI3K alpha mTOR dual inhibitor PWT33597 selectively inhibits both PI3K alpha kinase and mTOR kinase, which may result in tumor cell apoptosis and growth inhibition in PI3K mTOR-overexpressing tumor cells.