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).
Hypothemycin is a fungal polyketide and is a multikinase inhibitor (Kis: 10/70 nM, 17/38 nM, 90 nM, 900 nM/1.5 μM, and 8.4/2.4 μM for VEGFR2/VEGFR1, MEK1/MEK2, FLT-3, PDGFRβ/PDGFRα, and ERK1/ERK2, respectively).