Nur77 modulator 4 (Compound 15h) is a Nur77 inducer with a KD of 0.477 µM. Nur77 modulator 4 significantly induces Nur77 expression and apoptosis, showing excellent growth inhibition in HepG2 and MCF-7 cells, with an IC50 of less than 5 µM. Nur77 modulator 4 activates Nur77-mediated ER stress through the PERK-ATF4 and IRE1 signaling pathways, thereby inducing cell apoptosis. Nur77 modulator 4 can be used in cancer research applications [1].