LY3214996 is a selective and novel ERK1/2 inhibitor with IC50 of 5 nM for both enzymes in biochemical assays. It potently inhibits cellular phospho-RSK1 in BRAF and RAS mutant cancer cell lines.  

RAF709 is a potent inhibitor of B/C RAF kinase with almost equivalent IC50 values of 0.4 nM for B-RAF and C-RAF, showing a high level of selectivity, demonstrating greater than 99% on-target binding to BRAF, BRAFV600E, and CRAF at 1 μM and very few off-targets with DDR1 (>99%), DDR2 (86%), FRK (92%), and PDGFRb (96%), the only kinases with binding >80% at 1 μM.

SCH772984 potently inhibits ERK1 and ERK2 activity with IC50 values of 4 and 1 nM, respectively