| | Identification | Back Directory |  | [Name] 
 SB 203580 (hydrochloride)
 |  | [CAS] 
 869185-85-3
 |  | [Synonyms] 
 RWJ 64809 hydrochloride
 SB 203580, Hydrochloride - CAS 869185-85-3 - Calbiochem
 RWJ 64809 HYDROCHLORIDE;SB203580 HYDROCHLORIDE;SB-203580 HYDROCHLORIDE
 |  | [Molecular Formula] 
 C21H17ClFN3OS
 |  | [MDL Number] 
 MFCD01862622
 |  | [MOL File] 
 869185-85-3.mol
 |  | [Molecular Weight] 
 413.896
 | 
 | Chemical Properties | Back Directory |  | [storage temp. ] 
 -20C
 |  | [solubility ] 
 insoluble in EtOH; insoluble in H2O; ≥20.7 mg/mL in DMSO
 |  | [form ] 
 Bright yellow solid
 |  | [color ] 
 Light yellow to yellow
 |  | [Water Solubility ] 
 Soluble to 25 mM in water
 |  | [Stability:] 
 Hygroscopic
 | 
 | Hazard Information | Back Directory |  | [Uses] 
 SB 203580 Hydrochloride is a protein kinase inhibitor.
 |  | [General Description] 
 A water-soluble form of the potent MAP kinase inhibitor SB 203580 (Cat. No. 559389).
 |  | [Biological Activity] 
 sb203580 hcl is a specific inhibitor of p38-mapks with ic50 value of 0.6 μm [1].sb203580 is an inhibitor of p38-mapkα and p38-mapkβ. in neonatal myocytes, sb203580 prevented p38-mapk from activating mapkapk2 with ic50 value of 70 nm. it also significantly suppressed mapkapk2 activation in by il-1, osmotic stress or arsenite in kb cells. in neonatal rat ventricular myocytes, sb203580 inhibited jnk activity of activating c-jun with ic50 value of 3-10 μm. besides that, sb203580 affected the phosphorylation of small heat shock proteins caused by mapkapk2. it inhibited the il-1-, chemical- or osmotic stress-stimulated hsp27 phosphorylation with ic50 value of < 1μm in kb cells [1, 2].
 |  | [Biochem/physiol Actions] 
 Cell permeable: yes
 |  | [storage] 
 Store at -20°C
 |  | [References] 
 [1] cuenda a, rouse j, doza y n, et al. sb 203580 is a specific inhibitor of a map kinase homologue which is stimulated by cellular stresses and interleukin-1. febs letters, 1995, 364(2): 229-233.
 [2] clerk a, sugden p h. the p38-mapk inhibitor, sb203580, inhibits cardiac stress-activated protein kinases/c-jun n-terminal kinases (sapks/jnks). febs letters, 1998, 426(1): 93-96.
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