Cat#:RP-1796H;Product Name:Recombinant Human TNF alpha/TNFSF2 Protein;Synonym:Tumor Necrosis Factor, TNFSF2, Cachectin, Differentiation-inducing factor , DIF, Necrosin, Cytotoxin;Source:E.coli;Molecular Characterization:Approximately 17.4 kDa, a single non-glycosylated polypeptide chain containing 157 amino acids.;Purity:Greater than 98 % as determined by SDS-PAGE and HPLC analyses;Endotoxin:<1.0 EU per μg protein as determined by the LAL method.;Bioactivity:> 3.0× 107 IU/mg;Formulation:Lyophilized from a 0.2 μm filtered concentrated solution in PBS, pH 7.2.;Stability:Recombinant Proteins are stable for up to 1 year from date of receipt at -70℃;Reconstitution:Please see related COA for specific instructions.;Storage:Avoid repeated freeze-thaw cycles. In lyophilized state for 1 year (4-8℃); Upon reconstitution under sterile conditions for 2 weeks (4-8℃) or 3 months (-20℃ to -90℃).;