CB-839, mitomycin C, cryptotanshinone, altretamine, GSK583, liproxstatin-1, spautin-1, PD-1/PD-L1 inhibitor 2, RVX-208, selinexor, ferrostatin-1, diacerein, LY2603618, and patupilone were purchased from Selleckchem (Houston, TX). Cisplatin, carboplatin and oxaliplatin were purchased from Sigma-Aldrich (St. Louis, MO). Olaprib, niraparib, veliparib were purchased from Cayman Chemical (Ann Arbor, MI). As2O3 was purchased from BioTang (Lexington, MA). C1–27 is a GSTO1 inhibitor previously identified and synthesized by our laboratory (5 (link)).