Cat# RP-1794H Product Name Recombinant Human Epidermal Growth Factor(EGF) Protein Synonym EGF, Urogastrone, URG Source E.coli Molecular Characterization Approximately 6.2 kDa, a single non-glycosylated polypeptide chain containing 53 amino acids. Endotoxin 1.0 × 107 IU/mg Physical Appearance Sterile Filtered White lyophilized (freeze-dried) powder. Storage This lyophilized preparation is stable at 2-8 °C, but should be kept at -20 °C for long term storage, preferably desiccated. Upon reconstitution, the preparation is stable for up to one week at 2-8 °C. For maximal stability, apportion the reconstituted preparation into working aliquots and store at -20 °C to -70 °C. Avoid repeated freeze/thaw cycles.