Bcl-2-IN-7 (compound 6) is a potent Bcl-2 (B-cell lymphoma-2) inhibitor. Bcl-2-IN-7 down-regulates the expression of Bcl-2 , and increases the expression of p53, Bax , and caspase-7 mRNA. Bcl-2-IN-7 induces cell cycle arrest and apoptosis in breast cancer MCF-7 cells. Bcl-2-IN-7 shows good anticancer activity, with IC 50 values of 20.17, 22.64, 45.57, and 51.50 μM against MCF-7, LoVo, HepG2, and A549 cell lines, respectively.