A potent and selective antitumor agent that displays potent activity against renal, colon, and breast cancer cell lines in the NCI 60-cell panel. Exhibits a mean GI₅₀ of 16 nM and a mean LC₅₀ value of 2.24 µM in NCI60-cell-line screen, with LC₅₀ activity in the HCT 116 human colon cancer cell line below 10 nM.