The chemical Zanamivir has a designated molecular formula of C12H20N4O7 and a molecular weight of 332.313 g/mol. Synonyms may include: Relenza, GR 121167X, 4-Guanidino-2,4-dideoxy-2,3-dehydro-N-acetylneuraminic acid, Gana, GANA (inhibitor), 4-Guanidino-Neu5Ac2en, GG 167, HSDB 7437, UNII-L6O3XI777I (ChemID). Zanamivir has been assigned a MeSH pharmacological action of: Antivirals, Enzyme Inhibitor.