Cell permeable superoxide dismutase (SOD) mimetic. Potent inhibitor of peroxynitrite-induced oxidative reactions (peroxynitrite scavenger), but not a scavenger of nitric oxide (NO). Neuronal apoptosis inhibitor. Protects T cells from superoxide generation, caspase-dependent DNA loss and cell death. Lipopolysaccharide-induced TNF-alpha production inhibitor, by prevention of intracellular ROS generation and subsequent inactivation of p38 MAPK and SAPK/JNK.Storage and Stability:Short-term Storage: +4°CLong-term Storage: -20°CStable for at least 2 years after receipt when stored at -20°C.