TNF-α-IN-19 is an inhibitor of TNFα that can block the interaction between TNFαRI, TRADD, and RIP1, the EC50 values for TNFα, IL-1β, and IL-1β/TNFα are 2.451, 3.792 and 1.54 μM, respectively. TNF-α-IN-19 only inhibits the degradation of IκBα when cells are stimulated by TNFα and not by IL-1β[1].