I-BET151 is a member of the class of imidazoquinolines that is 1,3-dihydro-2H-imidazo[4,5-c]quinolin-2-one substituted by (1R)-1-(pyridin-2-yl)ethyl, 3,5-dimethyl-1,2-oxazol-4-yl, and methoxy groups at positions 1, 7, and 8, respectively. It is a pan-BET bromodomain inhibitor. It has a role as an apoptosis inducer, an antineoplastic agent and a BET bromodomain inhibitor.