Inhibits the tyrosine kinase activity of FGFR1 (IC50 = 10-20 µM in the presence of 1 mM ATP) by interacting with the catalytic domain of FGFR1. Also inhibits aFGF-induced phosphorylation of ERK1 and ERK2 (IC50 = 10-20 µM). In contrast to SU4984, it acts only as a weak inhibitor of tyrosine phosphorylation of the PDGF receptor. Does not inhibit the phosphorylation of insulin receptor and exhibits no inhibitory effect on EGF receptor kinase.
Purity: >=95% (HPLC)
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Other Notes: Mohammadi, M., et al. 1997. Science 276, 955.