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Cat. No. M8946
IQ-1S Structure


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10mg USD 80  USD80 In stock
50mg USD 265  USD265 In stock
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Biological Activity

IQ-1S is also a prospective inhibitor of NF-κB/activating protein 1 (AP-1) activity with an IC50 of 2.3±0.41 μM. The effect of IQ-1S is evaluated on LPS-induced cytokine production in human PBMCs. Among the 12 cytokines analyzed, LPS (200 ng/mL) consistently induces five (IL-1α, IL-1β, IL-6, IL-10, and TNF-α) in PBMCs compared with DMSO-treated control cells. Production of all of these cytokines is significantly inhibited by 20 μM IQ-1S. Among them, TNF-α production is inhibited completely by IQ-1 (>99%), the levels of IL-1α, IL-1β, and IL-10 are decreased by 85%, and IL-6 production is decreased by 33%.

In vivo, when mice are dosed with 12.5 and 30 mg/kg IQ-1S (The sodium salt of IQ-1) i.p., the serum exposure of the compound is also good, with AUC0-12h values of 2.9 and 7.4 μM/h, respectively.

Protocol (for reference only)
Cell Experiment
Cell lines Human PBMCs
Preparation method Human PBMCs are plated in 96-well plates at a density of 2×105 cells/well in culture medium supplemented with 3% (v/v) endotoxin-free FBS. PBMCs are pretreated with 20 μM IQ-1 or DMSO for 30 min, followed by addition of 200 ng/ml LPS for 24 h. A human cytokine MultiAnalyte ELISArray Kit is used to evaluate various cytokines (IL-1α, IL-1β, IL-2, IL-4, IL-6, IL-8, IL-10, IL-12, IL-17A, interferon (IFN)-γ, TNF-α, and granulocyte-macrophage colony-stimulating factor in supernatants of PBMCs.
Concentrations 20 μM
Incubation time 24 h
Animal Experiment
Animal models BALB/c mice
Dosages 12.5 or 30 mg/kg
Administration i.p.
Chemical Information
Molecular Weight 247.25
Formula C15H9N3O
CAS Number 23146-22-7
Solubility (25°C) DMSO: ≥ 25 mg/mL
Storage Powder          -20°C   3 years ;  4°C   2 years
In solvent       -80°C   6 months ;  -20°C   1 month
Conversion of different model animals based on BSA (PMID: 27057123)
Species Mouse Rat Rabbit Guinea pig Hamster Dog
Weight (kg) 0.02 0.15 1.8 0.4 0.08 10
Body Surface Area (m2) 0.007 0.025 0.15 0.05 0.02 0.5
Km factor 3 6 12 8 5 20
Animal A (mg/kg) = Animal B (mg/kg) multiplied by  Animal B Km
Animal A Km

For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.


[1] Atochin DN, et al. Neurosci Lett. A novel dual NO-donating oxime and c-Jun N-terminal kinase inhibitor protects against cerebral ischemia-reperfusion injury in mice.

[2] Schepetkin IA, et al. J Pharmacol Exp Ther. Anti-Inflammatory Effects and Joint Protection in Collagen-Induced Arthritis after Treatment with IQ-1S, a Selective c-Jun N-Terminal Kinase Inhibitor.

[3] Schepetkin IA, et al. Mol Pharmacol. Identification and characterization of a novel class of c-Jun N-terminal kinase inhibitors.

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Keywords: IQ-1S, IQ-1 supplier, JNK, inhibitors, activators

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