Home JAK/STAT JAK inhibitor CEP-33779

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CEP-33779 JAK inhibitor

Cat.No.S2806

CEP33779 is a selective JAK2 inhibitor with IC50 of 1.8 nM, >40- and >800-fold versus JAK1 and TYK2.
CEP-33779 JAK inhibitor Chemical Structure

Chemical Structure

Molecular Weight: 462.57

Jump to Mechanism of Action Cell Culture & Working Concentration Solubility Chemical Information, Storage & Stability Specificity

Quality Control

Cell Culture, Treatment & Working Concentration

Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID
TF-1 cells Function assay 1 h Inhibition of JAK2 in human TF-1 cells using GM-CSF pretreated for 1 hr prior to GM-CSF addition measured after 5 hrs by FRET based GeneBLAzer assay, IC50=0.061 μM
Click to View More Cell Line Experimental Data

Chemical Information, Storage & Stability

Molecular Weight 462.57 Formula

C24H26N6O2S

 Storage (From the date of receipt)
CAS No. 1257704-57-6 Download SDF Storage of Stock Solutions

Synonyms N/A Smiles CN1CCN(CC1)C2=CC=CC(=C2)NC3=NN4C=CC=C(C4=N3)C5=CC=C(C=C5)S(=O)(=O)C

Solubility

In vitro
Batch:

DMSO : 93 mg/mL ( (201.05 mM) Moisture-absorbing DMSO reduces solubility. Please use fresh DMSO.)

Water : Insoluble

Ethanol : Insoluble

Molarity Calculator

Mass Concentration Volume Molecular Weight

In vivo
Batch:

In vivo Formulation Calculator (Clear solution)

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Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )

Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such
as vortex, ultrasound or hot water bath can be used to aid dissolving.

Mechanism of Action

Targets/IC50/Ki
JAK2 [1]
(Cell-free assay)
1.8 nM
In vitro
CEP33779(< 3 μM) inhibits phosphorylation of downstream target signal transducer and activator of transcription 5(pSTAT5) of JAK2 in a concentration dependent manner in HEL92 cells. [1]
In vivo
CEP33779 orally administrated with 55 mg/kg inhibits phosphorylation of STAT5 in HEL92 tumor extracts from HEL92 xenograft mice. CEP33779 orally administered twice daily at dose of 55 mg/kg reduces mean paw edema and clinical scores in mice with collagen-antibody induced arthritis (CAIA) or collagen-induced arthritis (CIA). CEP33779 orally administered twice daily at dose of 55 mg/kg totally inhibits paw phospho-STAT3 expression in CAIA or CIA mice, associated with decreased cytokines including IL-12, IFNγ, IL-2, IL-1β, TNFα and GM-CSF. CEP33779 results in reduced bone degradation, reduced tissue destruction, and reduced osteoarthritis in dose-dependent manner in CAIA or CIA mice. [1] CEP33779 orally administrated at 100 mg/kg extends survival and reduces splenomegaly/lymphomegaly in MRL/lpr systemic lupus erythematosus mice, thus protect mice from developing glomerulonephritis. CEP33779 orally administrated at 100 mg/kg decreases several SLE-associated proinflammatory cytokines and reduces levels of a bone resorption biomarker associated with increased osteoclast activity in MRL/lpr systemic lupus erythematosus mice. [2] CEP33779 orally administered twice daily at dose of 55 mg/kg induces regression of established colorectal tumors, reduces angiogenesis, and reduces proliferation of tumor cells in a mouse model of colitis-induced colorectal cancer. Tumor regression correlated with inhibition of STAT3 and NF-κB (RelA/p65) activation, and decreased the expression of proinflammatory, tumor-promoting cytokines interleukin (IL)-6 and IL-1β. [3]
References

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Frequently Asked Questions

Question 1:
How to formulate it for in vivo use?

Answer:
It is fine for oral gavage, and can be further dilute with PBS. PEG 400 is ok. S2806 in 1% DMSO+30% polyethylene glycol+1% Tween 80 is a suspension.

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