Cell-permeable. A selective, ATP-competitive inhibitor of PI3Kγ with IC50 values of 0.25, >20, >20, and 4.5 μM for the human recombinant γ, δ, β, and α isoforms, respectively. AS 604850 inhibits MCP-1-mediated monocyte chemotaxis with an IC50 value of 21 μM and reduces RANTES-induced peritoneal neutrophil recruitment in a murine model of leukocyte chemotaxis with an ED50 value of 42.4 mg/kg. MW: 285.22. Purity ≥98% by HPLC