IRAK-4 protein kinase inhibitor 2 (compound 1) is a potent inhibitor of interleukin-1 (IL-1) receptor-associated kinase-4 (IRAK-4) , with an IC 50 of 4 μM. IRAK-4 protein kinase inhibitor 2 can be used for the research of inflammatory and immune-related conditions or disorders In Vitro IRAK-4 protein kinase inhibitor 2 (compound 1) also inhibits IRAK-1, with an IC 50 of Form:Solid IC50& Target:IRAK4 4 μM (IC 50 )