INF-A (Interferon alfa-2a, recombinant) is a sterile protein product for use by injection. INF-A (interferon alfa-2a, recombinant) is manufactured by recombinant DNA technology that employs a genetically engineered Escherichia coli bacterium containing DNA that codes for the human protein. Interferon alfa-2a, recombinant is a highly purified protein containing 165 amino acids, and it has an approximate molecular weight of 19,000 daltons.
INF (Interferon alfa-2b) for intramuscular, subcutaneous, intralesional, or intravenous injection is a purified sterile recombinant interferon product. INF recombinant for Injection has been classified as an alpha interferon and is a water-soluble protein with a molecular weight of 19,271 daltons produced by recombinant DNA techniques. It is obtained from the bacterial fermentation of a strain of Escherichia coli bearing a genetically engineered plasmid containing an interferon alfa2b gene from human leukocytes.
