Selective Ub-conjugating enzyme (E2) complex Ubc13-Uev1A inhibitor. Inhibits the formation of the Ubc13~Ub conjugate. NF-κB activation inhibitor. Inhibits proliferation and survival of ABC-DLBCL and GCB-DLBCL (Diffuse large B cell lymphoma) cells.Storage and Stability:Short-term Storage: +4°CLong-term Storage: -20°CStable for at least 2 years after receipt when stored at -20°C.