Catalog No.S6005

VX-702 Chemical Structure

Molecular Weight(MW): 404.3

VX-702 is a highly selective inhibitor of p38α MAPK, 14-fold higher potency against the p38α versus p38β. Phase 2.

Size Price Stock Quantity  
In DMSO USD 64 In stock
USD 70 In stock
USD 110 In stock
USD 370 In stock
USD 670 In stock

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2 Customer Reviews

  • Reduction of IL-10 expression due to p38 inhibition is observed also in CpG-stimulated B cells and using VX-702. B cells were pre-treated with 10 uM of VX-702 for 1 h and stimulated with LPS or CpG for 24 or 48 h. Bar graphs indicate mean (±SEM) IL-10 concentrations at 48 h from n = 4 (LPS) and n = 3 (CpG) experiments. Significant differences against the no inhibitor condition were calculated using a paired Student's t-test and indicated as follows: *p < 0.05, ***p < 0.001.

    Mol Immunol 2014 62(2), 266-76. VX-702 purchased from Selleck.

     Bone marrow derived macrophages were pre-treated with the indicated concentrations of VX702 for 1h prior to LPS treatment (100 ng/ml).  TNF-a production was analyzed 24h later.

    Lee lay hoon from National University of Singapore. VX-702 purchased from Selleck.

Purity & Quality Control

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2. For more details, such as half maximal inhibitory concentrations (IC50s) and working concentrations of each inhibitor, please click on the link of the inhibitor of interest.
3. "+" indicates inhibitory effect. Increased inhibition is marked by a higher "+" designation.
4. Orange "√" refers to compounds which do inhibitory effects on the related isoform, but without specific value.

Biological Activity

Description VX-702 is a highly selective inhibitor of p38α MAPK, 14-fold higher potency against the p38α versus p38β. Phase 2.
Features Highly selective, orally active inhibitor of p38 MAPK.
p38α [1]
(Cell-free assay)
4 nM-20 nM
In vitro

Pre-incubation of platelets with VX-702 (1 μM) completely or partially inhibits p38 activation (IC50 4 to 20 nM) induced by platelet agonists including thrombin, SFLLRN, AYPGKF, U46619 and collagen. VX-702 shows no effect on platelet aggregation induced by any of the p38 MAPK agonists in the presence or absence of anti-platelet therapies. [1] VX-702 inhibits the production of IL-6, IL-1β and TNFα (IC50 = 59, 122 and 99 ng/mL, respectively) in a dose-dependent manner. [2]

In vivo The half-life of VX-702 is 16 to 20 hours, with a median clearance of 3.75 L/h and a volume of distribution of 73 L/kg. Both AUC and Cmax values are dose proportional for VX-702, which is predominantly cleared renally. [2] VX-702 (at a dose of 0.1 mg/kg twice daily) has an equivalent effect as that of methotrexate (0.1 mg/kg). In addition, VX-702 (5 mg/kg twice daily) also has an equivalent effect as prednisolone (10 mg/kg once daily), as measured by percentage inhibition of wrist joint erosion and inflammation score. [3] VX-702 selectively inhibits activation of p38 MAPK after ischemia with no effects on ERKs and JNKs. The MI/AAR ratio is significantly reduced in the 50 mg/kg group compared with the 5 mg/kg and vehicle groups.[4]


Solubility (25°C)

In vitro DMSO 81 mg/mL (200.34 mM)
Water <1 mg/mL
Ethanol <1 mg/mL
In vivo 30% PEG400+0.5% Tween80+5% propylene glycol 30 mg/mL

* 1 mg/ml means slightly soluble or insoluble.
* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.

Chemical Information

Molecular Weight 404.3


CAS No. 745833-23-2
Storage powder
in solvent
Synonyms N/A

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Clinical Trial Information

NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT00395577 Completed Rheumatoid Arthritis Vertex Pharmaceuticals Incorporated November 2006 Phase 2
NCT00205478 Completed Rheumatoid Arthritis Vertex Pharmaceuticals Incorporated June 2005 Phase 2

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Handling Instructions

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p38 MAPK Signaling Pathway Map

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Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID