P505-15 is a potent, cell-permeable, highly selective, small molecule SYK inhibitor (IC₅₀ = 1 nM) with anti-SYK activity that is at least 80-fold greater than its affinity for other kinases. P505-15 blocks B cell receptor-mediated cell signaling and activation in whole blood (IC₅₀s = 0.27 and 0.28 µM, respectively), as well as Fcɛ receptor 1-mediated basophil degranulation (IC₅₀ = 0.15 µM).
Small Molecule Compounds
2-[[(1R,2S)-2-aminocyclohexyl]amino]-4-[[3-(2H-1,2,3-triazol-2-yl)phenyl]amino]-5-pyrimidinecarboxamide hydrochloride, PRT062607, PRT2607, BIIB-057
≥98% by HPLC