228559-41-9

Ki8751 (228559-41-9) is a very potent (IC50 = 0.9 nM) inhibitor of vascular endothelial growth factor receptor 2 (VEGFR-2).1 It also inhibited PDGFRα (IC50 = 67 nM), c-Kit (IC50 = 40 nM), and FGFR2 (IC50 = 170 nM). Ki8751 completely suppressed HUVEC growth at 1 nM. Ki8751 completely inhibited tumor growth in LC-6 human tumor xenografts @ 5mg/kg. Ki8751 displayed anti-influenza A and B activity via disruption of virus entry in a PDGFR?/GM3-dependent manner.2

Ki8751 is a potent and selective inhibitor of VEGFR2, PDGFRα and c-Kit with IC50 of 0.9 nM, 67 nM and 40 nM, respectively.

ChEBI: 1-(2,4-difluorophenyl)-3-[4-[(6,7-dimethoxy-4-quinolinyl)oxy]-2-fluorophenyl]urea is an aromatic ether.

Potent, selective inhibitor of VEGFR-2 tyrosine kinase (IC 50 = 0.9 nM). Displays some inhibitory activity towards c-Kit, PDGFR α and FGFR-2 (IC 50 values range from 40 to 170 nM) but is highly selective over other receptor tyrosine kinases (IC 50 > 10000 nM for FGFR-2, EGFR and HGFR). Inhibits VEGF-stimulated proliferation of human umbilical vein endothelial cells (HUVEC) and inhibits tumor growth in vivo ; antiangiogenic.

Store at +4°C

Kubo et al. (2005), Novel potent orally active selective VEGFR-2 tyrosine kinase inhibitors: synthesis, structure-activity relationships, and antitumor activities of N-phenyl-N’{4-(4-quinolyloxy)phenyl}ureas; J. Med. Chem. 48 1359 Vrijens et al. (2019), Influenza virus entry via the GM3 ganglioside-mediated platelet-derived growth factor receptor b signaling pathway; J. Gen. Virol. 100 583