Catalog No. size PriceQuantity
M6541-2 2mg solid $90
M6541-10 10mg solid $371


PD-166866 is a selective inhibitor of the FGF-1 receptor tyrosine kinase (FGFR1) with IC50 = 55 nM, and no effect on c-Src, PDGFR-b, EGFR or insulin receptor tyrosine kinases or MEK, PKC, and CDK4. PD-166866 has clear antiproliferative effects.

Product information

CAS Number: 192705-79-6

Molecular Weight: 396.44

Formula: C20H24N6O3


PD 166866


Chemical Name: 1-(2-amino-6-(3,5-dimethoxyphenyl)pyrido[2,3-d]pyrimidin-7-yl)-3-(tert-butyl)urea.

Smiles: CC(C)(C)NC(=O)NC1=NC2=NC(N)=NC=C2C=C1C1C=C(C=C(C=1)OC)OC


InChi: InChI=1S/C20H24N6O3/c1-20(2,3)26-19(27)25-17-15(8-12-10-22-18(21)24-16(12)23-17)11-6-13(28-4)9-14(7-11)29-5/h6-10H,1-5H3,(H4,21,22,23,24,25,26,27)

Technical Data

Appearance: Solid Power

Purity: ≥98% (or refer to the Certificate of Analysis)

Solubility: DMSO: 14 mg/mLwarmed(35.31 mM).

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis

Storage Condition: Dry, dark and -20 oC for 1 year or refer to the Certificate of Analysis.

Shelf Life: ≥12 months if stored properly.

Stock Solution Storage: 0 - 4 oC for 1 month or refer to the Certificate of Analysis.

Drug Formulation: To be determined.

HS Tariff Code: 382200

How to use

In Vitro:

PD-166866 inhibits human full-length FGFR-1 tyrosine kinase with an IC50 value of 52.4 nM and is characterized as an ATP competitive inhibitor of the FGFR-1. PD-166866 is a potent inhibitor of FGFR autophosphorylation in NIH 3T3 cells expressing endogenous FGFR-1 and in L6 cells overexpressing the human FGFR-1 tyrosine kinase. PD-166866 also inhibits bFGF-induced tyrosine phosphorylation of the 44- and 42-kDa (ERK 1/2) mitogen-activated protein kinase isoforms in L6 cells. Daily exposure of PD-166866 to L6 cells at concentrations from 1 to 100 nM results in a concentration-related inhibition of bFGF-stimulated cell growth for 8 consecutive days with an IC50 value of 24 nM.


  1. Murayama N, Kadoshima T, Takemoto N, Kodama S, Toba T, Ogino R, Noshita T, Oka T, Ueno S, Kuroda M, Shimmyo Y, Morita Y, Inoue T. SUN11602, a novel aniline compound, mimics the neuroprotective mechanisms of basic fibroblast growth factor. ACS Chem Neurosci. 2013 Feb 20;4(2):266-76. doi: 10.1021/cn300183k. Epub 2012 Nov 21. PubMed PMID: 23421678; PubMed Central PMCID: PMC3582292.
  2. Risuleo G, Ciacciarelli M, Castelli M, Galati G. The synthetic inhibitor of fibroblast growth factor receptor PD166866 controls negatively the growth of tumor cells in culture. J Exp Clin Cancer Res. 2009 Dec 11;28:151. doi: 10.1186/1756-9966-28-151. PubMed PMID: 20003343; PubMed Central PMCID: PMC2797793.
  3. Ohshima M, Yamaguchi Y, Kappert K, Micke P, Otsuka K. bFGF rescues imatinib/STI571-induced apoptosis of sis-NIH3T3 fibroblasts. Biochem Biophys Res Commun. 2009 Apr 3;381(2):165-70. doi: 10.1016/j.bbrc.2009.02.012. Epub 2009 Feb 10. PubMed PMID: 19338769.

Products are for research use only. Not for human use.

Payment & Security

PayPal Venmo

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Estimate shipping

You may also like

Recently viewed