PD-161570 

PD-161570 is a potent and ATP-competitive human FGF-1 receptor inhibitor with an IC₅₀ of 39.9 nM and a K_i of 42 nM. PD-161570 also inhibits the PDGFR, EGFR and c-Src tyrosine kinases with IC₅₀ values of 310 nM, 240 nM, and 44 nM, respectively. PD-161570 inhibits PDGF-stimulated autophosphorylation and FGF-1 receptor phosphorylation with IC₅₀s of 450 nM and 622 nM, respectively^[1][2]. PD-161570 is also a bone morphogenetic proteins (BMPs) and TGF-β signaling inhibitor^[3].

PD-161570 (Compound 6c; 0.1-1 μM; 1-8 days; VSMCs) treatment inhibits PDGF-stimulated vascular smooth muscle cell proliferation in a dose dependent fashion with an IC₅₀ of 0.3 μM on day 8^[1].
PD-161570 suppresses constitutive phosphorylation of the FGF-1 receptor in both human ovarian carcinoma cells (A_121(p)) and Sf9 insect cells overexpressing the human FGF-1 receptor and blocked the growth of A_121(p) cells in culture^[2].
PD-161570 can potently inhibit basic fibroblast growth factor (bFGF)-mediated angiogenesis^[4].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

532.51

C₂₆H₃₅Cl₂N₇O

192705-80-9

Solid

Light yellow to yellow

O=C(NC(C)(C)C)NC1=NC2=NC(NCCCCN(CC)CC)=NC=C2C=C1C3=C(Cl)C=CC=C3Cl

Room temperature in continental US; may vary elsewhere.

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

• [1]. Hamby JM, et al. Structure-activity relationships for a novel series of pyrido[2,3-d]pyrimidine tyrosine kinase inhibitors. J Med Chem. 1997 Jul 18;40(15):2296-303.  [Content Brief]

  [2]. Batley BL, et al. Inhibition of FGF-1 receptor tyrosine kinase activity by PD 161570, a new protein-tyrosine kinase inhibitor. Life Sci. 1998;62(2):143-50.  [Content Brief]

  [3]. Kyosuke Hino, et al. An mTOR Signaling Modulator Suppressed Heterotopic Ossification of Fibrodysplasia Ossificans Progressiva. Stem Cell Reports. 2018 Nov 13;11(5):1106-1119.  [Content Brief]

  [4]. Wolfe A, et al. Pharmacologic characterization of a kinetic in vitro human co-culture angiogenesis model using clinically relevant compounds. J Biomol Screen. 2013 Dec;18(10):1234-45.  [Content Brief]