DW18134 is an inhibitor for interleukin receptor-associated kinase 4 (IRAK 4) with an IC50 of 11.2 nM. DW18134 inhibits phosphorylation of IRAK4 and IKK, downregulates the secretion of TNF-α and IL-6. DW18134 attenuates the Lipopolysaccharides (HY-D1056)-induced peritonitis and DSS-induced colitis in mouse models, and protects the intestinal barrier function [1].