Nrf2/HO-1 activator 2 (compound 13m), a difluoro-substituted derivative, is a highly potent activator of Nrf2/HO-1 with substantial neuroprotective and antioxidant properties. It functions by activating the Nrf2/HO-1 pathway through the phosphorylation of ERK1/2, JNK, or Akt in PC12 cells and is useful in investigating Parkinsons disease (PD) [1].