PD 173074

The fibroblast growth factor receptors (FGFRs) are cell surface receptors with intrinsic tyrosine kinase activity, which is necessary for receptor activation and signal propagation. PD 173074 is a potent and selective inhibitor of FGFR tyrosine kinase activity, blocking autophosphorylation of FGFR1 with an IC50 value of 21.5 nM. For comparison, it weakly inhibits PDGFR and c-Src (IC50 = 17.6 and 19.8 µM, respectively) and has no effect on EGFR, InsR, MEK, or PKC. PD 173074 also prevents signaling, at nanomolar levels, through FGFR2-5. Inhibition of FGFR signaling using PD 173074, impairs angiogenesis as well as self-renewal of stem cells via ERK1/2 activation.Formal Name: N-[2-[[4-(diethylamino)butyl]amino]-6-(3,5-dimethoxyphenyl)pyrido[2,3-d]pyrimidin-7-yl]-N'-(1,1-dimethylethyl)-urea. CAS Number: 219580-11-7. Molecular Formula: C28H41N7O3. Formula Weight: 523.7. Purity: >95%. Formulation: (Request formulation change), A crystalline solid. Solubility: DMSO: 1 mg/mL, Ethanol: 25 mg/mL. lambdamax: 238, 284, 368 nm. SMILES: CCN(CC)CCCCNc1ncc2cc(c3cc(OC)cc(OC)c3)c(NC(=O)NC(C)(C)C)nc2n1. InChi Code: InChI=1S/C28H41N7O3/c1-8-35(9-2)13-11-10-12-29-26-30-18-20-16-23(19-14-21(37-6)17-22(15-19)38-7)25(31-24(20)32-26)33-27(36)34-28(3,4)5/h14-18H,8-13H2,1-7H3,(H3,29,30,31,32,33,34,36). InChi Key: DXCUKNQANPLTEJ-UHFFFAOYSA-N.