Date published: 2026-5-18

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CAY10571 (CAS 152121-46-5)

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Alternate Names:
SB 203580, Sulfone; 4-(4-Fluorophenyl)-2-(4-methylsulfonylphenyl)-5-(4-pyridyl)-1H-imidazole
Application:
CAY10571 is a cell permeable, reversible, and ATP-competitive sulfone analog of the p38 MAP kinase inhibitor
CAS Number:
152121-46-5
Molecular Weight:
393.43
Molecular Formula:
C21H16FN3O2S
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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Pyridinylimidazoles, often called CSAIDs, are a class of anti-inflammatory compounds that suppress the synthesis of cytokines in human monocytes and inhibit eicosanoid productio (1). Because of its high specificity, one predominant pyridinylimidazole, SB203580, is frequently used to inhibit p38 MAPK, the tyrosine kinase activated by inflammatory cytokines and environmental stresses (2). CAY10571 is an analog of SB203580 that inhibits IL-1 production in the human monocytic cell line THP (1) with an IC50 value of 0.20 µM and binds CSAID binding protein, a serine/threonine kinase homologous to p38, inhibiting its kinase activity with an IC50 value of 0.03 µM (3,4). This chemical also inhibits 5-lipoxygenase production in RBL-1 cells with an IC50 value of 24 µM (3).


CAY10571 (CAS 152121-46-5) References

  1. Environment-mediated drug resistance in Bcr/Abl-positive acute lymphoblastic leukemia.  |  Feldhahn, N., et al. 2012. Oncoimmunology. 1: 618-629. PMID: 22934254
  2. Indispensable functions of ABL and PDGF receptor kinases in epithelial adherence of attaching/effacing pathogens under physiological conditions.  |  Manthey, CF., et al. 2014. Am J Physiol Cell Physiol. 307: C180-9. PMID: 24848114
  3. Dissecting the 17β-estradiol pathways necessary for neuroglobin anti-apoptotic activity in breast cancer.  |  Fiocchetti, M., et al. 2018. J Cell Physiol. 233: 5087-5103. PMID: 29219195
  4. Inhibitors of Mycobacterium tuberculosis EgtD target both substrate binding sites to limit hercynine production.  |  Sudasinghe, TD., et al. 2021. Sci Rep. 11: 22240. PMID: 34782676
  5. A high-throughput 384-well CometChip platform reveals a role for 3-methyladenine in the cellular response to etoposide-induced DNA damage.  |  Li, J., et al. 2022. NAR Genom Bioinform. 4: lqac065. PMID: 36110898
  6. Dynamic chromatin accessibility licenses STAT5- and STAT6-dependent innate-like function of TH9 cells to promote allergic inflammation.  |  Son, A., et al. 2023. Nat Immunol. 24: 1036-1048. PMID: 37106040
  7. SB 203580 is a specific inhibitor of a MAP kinase homologue which is stimulated by cellular stresses and interleukin-1.  |  Cuenda, A., et al. 1995. FEBS Lett. 364: 229-33. PMID: 7750577
  8. A protein kinase involved in the regulation of inflammatory cytokine biosynthesis.  |  Lee, JC., et al. Nature. 372: 739-46. PMID: 7997261
  9. Regulation of stress-induced cytokine production by pyridinylimidazoles; inhibition of CSBP kinase.  |  Gallagher, TF., et al. 1997. Bioorg Med Chem. 5: 49-64. PMID: 9043657

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

CAY10571, 5 mg

sc-223869
5 mg
$56.00

CAY10571, 10 mg

sc-223869A
10 mg
$140.00