P2受体拮抗剂;P2 Receptor Antagonists;;InformationAF-353 AF-353 (Ro-4) is a potent, selective and orally bioavailable antagonist of P2X3 receptor and P2X2/3 receptor with pIC50 of 8.06, 8.05 and 7.41 for human P2X3, rat P2X3 and human P2X2/3, respectively.TargetshP2X3 (Cell-free assay); rP2X3 (Cell-free assay); hP2X2/3 (Cell-free assay) 8.06(pIC50); 8.05(pIC50); 7.41(pIC50)