Ironomycin is a derivative of Salinomycin (HY-15597). Ironomycin exhibits selective inhibitory activity against mantle cell lymphoma (MCL) cells. Ironomycin blocks the cell cycle and induces apoptosis and ferroptosis. Ironomycin induces double-strand DNA breaks and activates the unfolded protein response (UPR), particularly the IRE1alpha signaling pathway accumulation. The combination of Ironomycin with Ibrutinib (HY-10997) shows a synergistic effect. Ironomycin can be used for the study of MCL.