WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 406173

CAS#: 185039-91-2

Description: PD166326 is one of the most potent members of the pyridopyrimidine class of protein tyrosine kinase inhibitors. In mice with the CML-like disease, PD166326 rapidly inhibited Bcr/Abl kinase activity after a single oral dose and demonstrated marked antileukemic activity in vivo. In vivo, PD166326 was also superior to imatinib mesylate in inhibiting the constitutive tyrosine phosphorylation of numerous leukemia-cell proteins, including the src family member Lyn. PD166326 also prolonged the survival of mice with imatinib mesylate-resistant CML induced by the Bcr/Abl mutants P210/H396P and P210/M351T.

Price and Availability




PD166326 is not in stock, but is available through custom synthesis. For cost-effective reason, minimum 1 gram order is requested. The product will be characterized by NMR, HPLC and MS analysis. Purity (HPLC) is usually >98%. CoA, QC data, MSDS will be provided when product is successfully made. The estimated lead time is 2-3 months. Please send email to sales@medkoo.com to inquire quote.

Chemical Structure


Theoretical Analysis

MedKoo Cat#: 406173
Name: PD166326
CAS#: 185039-91-2
Chemical Formula: C21H16Cl2N4O2
Exact Mass: 426.06503
Molecular Weight: 427.28334
Elemental Analysis: C, 59.03; H, 3.77; Cl, 16.59; N, 13.11; O, 7.49

Synonym: PD166326; PD166326; PD 166326.

IUPAC/Chemical Name: 6-(2,6-dichlorophenyl)-2-((3-(hydroxymethyl)phenyl)amino)-8-methylpyrido[2,3-d]pyrimidin-7(8H)-one

Technical Data

Solid powder

>98% (or refer to the Certificate of Analysis)

Shipping Condition:
Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition:
Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Soluble in DMSO

Shelf Life:
>2 years if stored properly

Drug Formulation:
This drug may be formulated in DMSO

Stock Solution Storage:
0 - 4 C for short term (days to weeks), or -20 C for long term (months).

Harmonized System Code:

Additional Information



1: Grosso S, Puissant A, Dufies M, Colosetti P, Jacquel A, Lebrigand K, Barbry P, Deckert M, Cassuto JP, Mari B, Auberger P. Gene expression profiling of imatinib and PD166326-resistant CML cell lines identifies Fyn as a gene associated with resistance to BCR-ABL inhibitors. Mol Cancer Ther. 2009 Jul;8(7):1924-33. doi: 10.1158/1535-7163.MCT-09-0168. Epub 2009 Jun 30. PubMed PMID: 19567819.

2: Wolff NC, Veach DR, Tong WP, Bornmann WG, Clarkson B, Ilaria RL Jr. PD166326, a novel tyrosine kinase inhibitor, has greater antileukemic activity than imatinib mesylate in a murine model of chronic myeloid leukemia. Blood. 2005 May 15;105(10):3995-4003. Epub 2005 Jan 18. PubMed PMID: 15657179; PubMed Central PMCID: PMC1895078.

3: von Bubnoff N, Veach DR, van der Kuip H, Aulitzky WE, Sänger J, Seipel P, Bornmann WG, Peschel C, Clarkson B, Duyster J. A cell-based screen for resistance of Bcr-Abl-positive leukemia identifies the mutation pattern for PD166326, an alternative Abl kinase inhibitor. Blood. 2005 Feb 15;105(4):1652-9. Epub 2004 Sep 30. PubMed PMID: 15459011.