A multi-kinase inhibitor (IC50s = 4, 8, 100, 9, and 7 nM for VEGFR2, PDGFRβ, CSF1R, c-KIT, and FLT3 receptor tyrosine kinases, respectively); inhibits Pdgfrα phosphorylation (IC50 = 2 nM) in lysates from C6 rat glial tumors; reduces tumor growth and inhibits Pdgfrβ and Vegfr2 phosphorylation in a 1:1 ratio in a C6 mouse xenograft model