FL118(10,11-(Methylenedioxy)-20(S)-camptothecin), a Camptothecin analog, is a potent and orally active inhibitor of Survivin. FL118 also selectively and independently inhibits three additional cancer-associated survival genes Mcl-1, XIAP, and cIAP2 in a p53 status-independent manner. FL118 displays potent antitumor activity and can be used in cancer research.