TBE 31 is a potent and orally active NQO1 inducer with an D m value of 1.1 nM. TBE 31 also is a potent Nrf2 activator. TBE 31 reacts with cysteines of Keap1, impairing its ability to target nuclear factor-erythroid 2 p45-related factor 2 (Nrf2) for degradation. TBE 31 shows cytoprotective effects.