Apoptosis inducer 9 induces apoptosis with IC 50 value of 4.21 μM. Apoptosis inducer 9 induces apoptosis through the mitochondrial pathway and enhance the expression of Cl-caspase-3, Cl-caspase-9 and Cl-PARP. Apoptosis inducer 9 can be used the potential to develop new anti-proliferative agents.