GPX4-IN-17 (Compound 9i) is an inhibitor of GPX4 with potent cytotoxicity (IC50 = 0.3 nM) . GPX4-IN-17 shows strong binding affinity against GPX4 (KD = 20.4 nM) . GPX4-IN-17 inhibits tumor growth in the xenograft tumor mouse model without detectable cytotoxicity. GPX4-IN-17 can enhance cancer chemotherapy and overcome tumor resistance. GPX4-IN-17 can be studied in antitumor reseach[1].