zanamivir amine and its Impurities

Zanamivir Amine is used for the treatment of infections caused by influenza A and influenza B viruses, but in otherwise-healthy individuals, benefits overall appear to be small. It is currently marketed by GlaxoSmithKline under the trade name Relenza as a powder for oral inhalation.Reference standards of Zanamivir Amine API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.