SKLB646 is an orally active multitarget kinase inhibitor that exhibits potent suppression of several kinases. It demonstrates significant inhibitory effects on SRC and VEGFR2, with IC50 values of 0.002 μmol/L and 0.012 μmol/L, respectively. Additionally, SKLB646 shows notable inhibition of B-Raf and C-Raf, with IC50 values of 0.022 μmol/L and 0.019 μmol/L, respectively. The compound inhibits the activation of the SRC signaling pathway and blocks the MAPK signaling pathway by inhibiting Raf kinases. Furthermore, SKLB646 inhibits the proliferation, migration, and invasion of human umbilical vein endothelial cells (HUVEC), thereby suppressing tumor-induced angiogenesis. SKLB646 also displays significant anti-proliferative and anti-survival effects on triple-negative breast cancer (TNBC) cell lines.

VEGFR2:0.012 μM, B-Raf:0.022 μM, c-Raf:0.019 μM