培非替尼产品是Peficitinib is a potent JAK inhibitor, with IC₅₀s of 3.9, 5.0, 0.7 and 4.8 nM for JAK1, JAK2, JAK3 and Tyk2, respectively. Peficitinib inhibits IL-2-induced proliferation of rat splenocytes (IC₅₀ = 10 nM) and phosphorylation of STAT5 in rat and human whole blood (IC₅₀s = 124 and 127 nM, respectively).