AS-605240 is an orally active inhibitor of PI3-kinase γ that suppresses joint inflammation in mouse models of rheumatoid arthritis.1 It inhibits human recombinant PI3Kγ, α, β, and δ in an ATP-competitive manner with IC50 values of 8, 60, 270, and 300 nM, respectively.1 AS-605240 inhibits C5a-mediated phosphorylation of protein kinase B in RAW 264 cells with an IC50 value of 90 nM. In vivo, AS-605240 reduced RANTES-induced peritoneal neutrophil recruitment in a mouse model of leukocyte chemotaxis with an ED50 value of 9.1 mg/kg. AS-605240 (potassium salt) has improved solubility compared to AS-605240 (Item No. 10007707).WARNING This product is not for human or veterinary use.