BCL2L1 and papilloma: Binding affinity to the antiapoptotic protein Bcl-xL: Ki = 5.3 μM. In vitro cytotoxic activity towards papilloma KB cells: IC50 = 35.5 μM; colon carcinoma HCT-116 cells: IC50 = 11.4 μM; breast adenocarcinoma MCF7 cells: IC50 = 42.5 μM; lymphocytic leukemia L1210 cells: IC50 = 12.3 μM. In vitro protein tyrosine phosphatase inhibition assay: IC50 = 7.3 μM.