All common reagents such as dimethyl sulfoxide (DMSO) were reagent-grade quality and obtained from Thermo Fisher Scientific (Waltham, MA, USA) or Sigma-Aldrich (St. Louis, MO, USA). Tissue culture media, fetal bovine serum (FBS) and supplements were purchased from Thermo Fisher Scientific. The CellTiter-Glo™ viability assay kit (cat# G7573) was obtained from Promega (Madison, WI, USA). Dasatinib and bosutinib were obtained from LC Laboratories (Woburn, MA, USA) and Selleck Chemicals (Houston, TX, USA), respectively. The manufacturer asserted that this was genuine bosutinib and, in addition, we subjected our lot of bosutinib to NMR analysis and confirmed the structure of the bosutinib used in this report as being genuine bosutinib and not an isomer (34 (link)).