A pan FGFR inhibitor (IC50s = 0.9, 1.4, and 1 nM for FGFR1, FGFR2, and FGFR3, respectively); suppresses proliferation of cancer cells with wild-type FGFR3 overexpression and in an RT112 bladder cancer xenograft mouse model overexpressing wild-type FGFR3