N-Hydroxy-2-[[[2-(6-methoxy-3-pyridinyl)-4-(4-morpholinyl)thieno[3,2-d]pyrimidin-6-yl]methyl]methylamino]-5-pyrimidinecarboxamide; N-Hydroxy-2-[[[2-(6-methoxypyridin-3-yl)-4-(morpholin-4-yl)thieno[3,2-d]pyrimidin-6-yl]methyl](methyl)amino]pyrimidine-5-carboxamide;

CUDC-907 is a dual PI3K and HDAC inhibitor. Studies have shown CUDC-907 is able to enhance antitumor activity when combined with standard of care agents in multiple myeloma and B cell lymphoma xenograft models.