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SP 600125JNK1/2/3 inhibitor

SP 600125

Catalog No. A4604
Size Price Stock Qty
10mM (in 1mL DMSO) $55.00 In stock
Evaluation Sample $28.00 In stock
10mg $50.00 In stock
50mg $65.00 In stock
100mg $85.00 In stock

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Sample solution is provided at 25 µL, 10mM.

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Chemical structure

SP 600125

Related Biological Data

SP 600125

Related Biological Data

SP 600125

Biological Activity

Description SP600125 is a broad-spectrum inhibitor of JNK for JNK1, JNK2 and JNK3 with IC50 of 40 nM, 40 nM and 90 nM, respectively.
Targets JNK1 JNK2 JNK3 Aurora A Flt3 TRKA
IC50 40 nM 40 nM 90 nM 60 nM 90 nM 70 nM


Cell experiment: [1]

Cell lines

MIN6 cells

Preparation method

The solubility of this compound in DMSO is >10 mM. General tips for obtaining a higher concentration: Please warm the tube at 37 °C for 10 minutes and/or shake it in the ultrasonic bath for a while.Stock solution can be stored below -20°C for several months.

Reaction Conditions

40 μM, 36 hours


When the MIN6 cells were transfected with the Gal4 plasmid and CREB plasmid, SP600125 significantly stimulated CREB-mediated promoter activity in a dose-dependent manner. There was a 2.8-fold increase in this reporter activity after exposure of the transfected MIN6 cells to 20 μM of the inhibitor.

Animal experiment: [2]

Animal models

Female C57BL/6 mice

Dosage form

Subcutaneous injection; 15 mg/kg; administered at 0, 12, 24, and 36 h


Anti-CD3 (50 μg) i.p. was administered as a single dose immediately after SP600125 at time 0. After 48 h, mice were killed, and the thymus was dissected for thymocyte isolation. Mice receiving SP600125 showed almost complete resistance to CD3 Ab-mediated apoptosis with CD4+CD8+ numbers the same as control animals.

Other notes

Please test the solubility of all compounds indoor, and the actual solubility may slightly differ with the theoretical value. This is caused by an experimental system error and it is normal.


[1] Vaishnav D, Jambal P, Reusch J E B, et al. SP600125, an inhibitor of c-jun N-terminal kinase, activates CREB by a p38 MAPK-mediated pathway. Biochemical and biophysical research communications, 2003, 307(4): 855-860.

[2] Bennett B L, Sasaki D T, Murray B W, et al. SP600125, an anthrapyrazolone inhibitor of Jun N-terminal kinase. Proceedings of the National Academy of Sciences, 2001, 98(24): 13681-13686.

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Chemical Properties

Cas No. 129-56-6 SDF Download SDF
Chemical Name dibenzo[cd,g]indazol-6(2H)-one
Canonical SMILES O=C1C2=CC=CC3=C2C(C4=CC=CC=C41)=NN3
Formula C14H8N2O M.Wt 220.23
Solubility >11mg/mL in DMSO Storage Desiccate at -20°C
General tips No
Shipping Condition No

View Related Products By Research Topics


SP600125 is a selective, reversible and ATP-competitive inhibitor of Jun N-terminal kinase (JNK) with IC50 values of 40, 40 and 90 nM for JNK1, 2 and 3, respectively [1].

SP600125 was screened out from a time-resolved f luorescence assay using the GST-c-Jun and recombinant human JNK2. In this assay, SP600125 showed a Ki value of 190 nM. SP600125 was also found to inhibit JNK1, 2 and 3 isoforms in the selectivity tests. The selectivity of SP600125 for JNK is 300-fold greater than that for ERK1 and p38-2. In Jurkat T cells, SP600125 suppressed the phosphorylation of c-Jun with IC50 of 5-10 μM. SP600125 also inhibited the expression of IL-2 and IFN-γ in cells stimulated with PMA and phytohemagglutinin, since JNK had been reported to regulate the transcription of IL-2. Besides that, SP600125 exerted differential inhibition of cytokines in CD4+ cells as well as inflammatory genes in monocytes. Moreover, SP600125 administration significantly inhibited TNF-α expression induced by LPS in a mouse model, suggesting that it had efficacy in endotoxin-induced inf lammation in vivo [1].

[1] Bennett B L, Sasaki D T, Murray B W, et al. SP600125, an anthrapyrazolone inhibitor of Jun N-terminal kinase. Proceedings of the National Academy of Sciences, 2001, 98(24): 13681-13686.