A pyridine derivative that acts as a highly selective antagonist of A3 receptor with excellent potency in both humans and rodents (Ki = 18.9nM for human A3R, and 113nM for rat A3R). Exhibits only a trivial antagonistic activity towards A1 and A2A receptors (Ki = 15.6uM and 2.05uM for rat A1R and A2AR, respectively). Abolishes the agonistic effects of Cl-IB-MECA on A3R-mediated proliferation of primary human coronary smooth muscle cells. Also, reported to block NECA-induced bronchoconstriction in an allergic murine model.
Storage and Stability:May be stored at 4°C. For long-term storage, aliquot and store at 4°C. Do not freeze. For maximum recovery of product, centrifuge the original vial prior to removing the cap. Further dilutions can be made in assay buffer.
Important Note:This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.
Toxicity and Hazards: All products should be handled by qualified personnel only, trained in laboratory procedures.