Human Interferon alpha 2b (IFN alpha2b) produced in E. coli is a single, non-glycosylated, polypeptide chain containing 165 amino acids and having a molecular mass of 19,269 Da. The Interferon alpha 2b (IFN alpha2b) gene was obtained from human leukocytes. The Recombinant Human Interferon alpha 2b (IFN alpha2b) is purified by proprietary chromatographic techniques. Synonym: rHuIFN-alpha-2b, rHuIFNalpha-2b, rHuIFN-a-2b, rHuIFN-alfa-2b, rHuIFNalfa-2b, Interferon-alpha-2b, Interferonalpha-2b, Interferon-a-2b, Interferon-alfa-2b, Interferonalfa-2. Formulation: Lyophilized from a (1 mg/ml) solution in containing 2.3 mg Sodium phosphate dibasic and 0.55 mg sodium phosphate monobasic buffer.