A cell-permeable, cyclobutenedione derivative that acts as a potent antagonist of chemokine receptor CXCR2 (IL8RB) (IC50 = 8nM). Reported to inhibit CXCR2-mediated chemotaxis in a CXCR2 expressing cell line (IC50 = 145nM). Exhibits good stability in human and rat liver microsomal preparations (>50% remaining after 30 min at 37°C).
Formula:C₁₈H₂₁N₃O₄
Molecular Weight:343.38
Solubility:DMSO (50mg/ml, light brown solution)
Storage and Stability:Lyophilized powder may be stored at -20°C. Stable for 12 months at -20°C. Reconstitute with sterile buffer or dH2O. Aliquot to avoid repeated freezing and thawing. Store at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
