BAY 43-9006, Free base

A free base form of BAY 43-9006 (Sorafenib) (Cat. No. 1594-25,100). Acts as an inhibitor of Raf-1 and B-Raf (IC₅₀ = 6 and 22 nM, respectively), as well as several receptor tyrosine kinases, including VEGFR2, VEGFR3, PDGFRβ, FLT3, and c-Kit (IC₅₀ = 90, 15, 20, 57, and 58 nM, respectively. It poorly inhibits ERK1, MEK1, and several other kinases (IC₅₀ = >10 μM).