Oltipraz-d 3 is the deuterium labeled Oltipraz. Oltipraz has an inhibitory effect on HIF-1α activation in a time-dependent manner, completely abrogating HIF-1α induction at ≥10 μM concentrations, the IC50 of Oltipraz for HIF-1α inhibition is 10 μM. Oltipraz is a potent Nrf2 activator.