3VW8:
reference: Structure-based design, synthesis, and evaluation of imidazo[1,2-b]pyridazine and imidazo[1,2-a]pyridine derivatives as novel dual c-Met and VEGFR2 kinase inhibitors., Matsumoto S, Miyamoto N, Hirayama T, Oki H, Okada K, Tawada M, Iwata H, Nakamura K, Yamasaki S, Miki H, Hori A, Imamura S, Bioorg Med Chem. 2013 Dec 15;21(24):7686-98. doi: 10.1016/j.bmc.2013.10.028. Epub, 2013 Oct 30. PMID: 24216091

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