PF-670462 2HCl

Catalog No. size PriceQuantity
M6553-2 2mg solid $111
M6553-10 10mg solid $436


PF-670462 2HCl is a potent inhibitor of the CK1 isoforms CK1ε and CK1δ (IC50 = 7.7 and 14 nM, respectively). Inhibition of CKIepsilon yields a perturbation of oscillator function that forestalls light as a zeitgeber, and they demonstrate that pharmacological tools such as PF-670462 may yield valuable insight into clock function. Casein kinase Iepsilon (CKIepsilon) is an essential component of the biological clock, phosphorylating PER proteins, and in doing so regulating their turnover and nuclear entry in oscillator cells of the suprachiasmatic nucleus (SCN).

Product information

CAS Number: 950912-80-8

Molecular Weight: 410.32

Formula: C19H22Cl2FN5



PF 670462

PF-670462 hydrochloride


PF-670462 HCl

Chemical Name: 4-[1-Cyclohexyl-4-(4-fluorophenyl)-1H-imidazol-5-yl]-2-pyrimidinamine dihydrochloride

Smiles: Cl.Cl.NC1=NC(=CC=N1)C1=C(N=CN1C1CCCCC1)C1C=CC(F)=CC=1


InChi: InChI=1S/C19H20FN5.2ClH/c20-14-8-6-13(7-9-14)17-18(16-10-11-22-19(21)24-16)25(12-23-17)15-4-2-1-3-5-15;;/h6-12,15H,1-5H2,(H2,21,22,24);2*1H

Technical Data

Appearance: Solid Power

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

Solubility: Soluble in DMSO

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:

PF-670462 is a potent and selective inhibitor of CKIε and CKIδ, with IC50s of 7.7 nM and 14 nM, respectively. PF-670462 shows less than 30-fold selevtivity for EGFR and SAPK2A/p38, with IC50s of 150 nM and 190 nM, respectively. PF-670462 also causes a redistribution of the GFP signal to the cytoplasm in a concentration-dependent manner, with an EC50 of 290 ± 39 nM in CKIε-transfected COS7 cells. PF-670462 is a potent inhibitor of Wnt/β-catenin signaling, with an IC50 of ∼17 nM. PF-670462 (1 μM) is a weak inhibitor of proliferation, and only modestly suppresses the growth of HEK293 and HT1080 cells. PF-670462 (100 nM) strongly inhibits CK1ε and CK1δ, consistent with its effect on Wnt/β-catenin signaling.

In Vivo:

PF-670462 (50 mg/kg, s.c.) produces robust phase delays, and the activity remains persistent, with no discernible correction in the absence of exogenous zeitgebers in rats. PF-670462 (25, 50, and 100 mg/kg, s.c.) induces dose-dependent phase shift[1]. PF-670462 (50 mg/kg; s.c.) significantly phase delays the rhythmic transcription of Bmal1, Per1, Per2 and Nr1d1 in both liver and pancreas by 4.5 ± 1.3 h and 4.5 ± 1.2 h, respectively, 1 day after administration. In the suprachiasmatic nucleus (SCN), the rhythm of Nr1d1 and Dbp mRNA expression is also delayed by 4.2 and 4 h, respectively.


  1. Young EE, Bryant CD, Lee SE, Peng X, Cook B, Nair HK, Dreher KJ, Zhang X, Palmer AA, Chung JM, Mogil JS, Chesler EJ, Lariviere WR. Systems genetic and pharmacological analysis identifies candidate genes underlying mechanosensation in the von Frey test. Genes Brain Behav. 2016 Jul;15(6):604-15. doi: 10.1111/gbb.12302. PubMed PMID: 27231153.
  2. Solocinski K, Richards J, All S, Cheng KY, Khundmiri SJ, Gumz ML. Transcriptional regulation of NHE3 and SGLT1 by the circadian clock protein Per1 in proximal tubule cells. Am J Physiol Renal Physiol. 2015 Dec 1;309(11):F933-42. doi: 10.1152/ajprenal.00197.2014. Epub 2015 Sep 16. PubMed PMID: 26377793; PubMed Central PMCID: PMC4669359.
  3. Kennaway DJ, Varcoe TJ, Voultsios A, Salkeld MD, Rattanatray L, Boden MJ. Acute inhibition of casein kinase 1δ/ε rapidly delays peripheral clock gene rhythms. Mol Cell Biochem. 2015 Jan;398(1-2):195-206. doi: 10.1007/s11010-014-2219-8. Epub 2014 Sep 23. PubMed PMID: 25245819.

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