5(S),14(R)-Lipoxin B4A positional isomer of LXA4

5(S),14(R)-Lipoxin B4 (CAS 98049-69-5)

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Application: A positional isomer of LXA4
CAS Number: 98049-69-5
Purity: >95%
Molecular Weight: 352.5
Molecular Formula: C20H32O5
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* Refer to Certificate of Analysis for lot specific data (including water content).
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A positional isomer of LXA4 produced by the metabolism of 15-HETE or 15-HpETE by human leukocytes. It is apart of a series of anti-inflammatory lipid mediators whose brief appearance generally signals the resolution of inflammation. Lipoxin A4 (LXA4) is a potent inhibitor of leukotriene (LT)-triggered polymorphonuclear neutrophil (PMN)-endothelial cell interaction and also blocks PMN migration stimulated by LTB4. At a concentration of 10-7 M, LXB4 inhibits PMN migration stimulated by LTB4 and inhibits LTB4-induced adhesion of PMNs with an IC50 value of ~3 X 10-10 M.


References

1 Serhan, C.N., Hamberg, M., Samuelsson, B., et al. On the stereochemistry and biosynthesis of lipoxin B. Proc Natl Acad Sci USA 83 1983-1987 (1986). 2 Serhan, C.N., Hamberg, M., Samuelsson, B. Lipoxins: Novel series of biologically active compounds formed from arachidonic acid in human leukocytes. Proc Natl Acad Sci USA 81 5335-5339 (1984). 3 Papayianni, A., Serhan, C.N., Brady, H.R. Lipoxin A4 and B4 inhibit leukotriene-stimulated interactions of human neutrophils and endothelial cells. J Immunol 156 2264-2272 (1996).

Formulation :
A solution in ethanol
Physical State :
Liquid
Storage :
Store at -80° C
Boiling Point :
78° C
Refractive Index :
n20D 1.54 (Predicted)
IC50 :
LTB4-induced adhesion of PMNs: IC50 = 0.3 nM
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
PubChem CID :
5280915
MDL Number :
MFCD00870250
SMILES :
CCCCC[C@@H]([C@@H](/C=C/C=C/C=C\\C=C\\[C@H](CCCC(=O)O)O)O)O

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Certificate of Analysis

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