ERK1 2 inhibitor 1 is a potent, orally bioavailable ERK1 2 inhibitor, showing 60% inhibition at 1 nM and an IC50 of 3.0 nM against ERK1 and ERK2, respectively.
Ravoxertinib hydrochloride is an orally bioavailable and selective inhibitor for ERK kinase activity (IC50: 6.1 nM and 3.1 nM for ERK1 and ERK2, respectively).