zanamivir and its Impurities
Zanamivir is used to treat flu symptoms caused by influenza virus in people who have had symptoms for less than 2 days. Reference standards of Zanamivir API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.


(2R,3R,4S)-3-Acetamido-2-((1S,2S)-1,2-dihydroxy-3-pentanamidopropyl)-4-hydroxy-3,4-dihydro-2H-pyran-6-carboxylic acid
(2R,3R,4S)-3-Acetamido-2-((1S,2S)-1,2-dihydroxy-3-pentanamidopropyl)-4-hydroxy-3,4-dihydro-2H-pyran-6-carboxylic acid
Catalogue No.:PA 26 0281002
CAS :
2204253-83-6
Molecular Formula : C16H26N2O8
Molecular Weight : 374.39


Zanamivir Hydrate - Impurity A
(2R,3R,4S)-3-(Acetylamino)-4-[[[N-[(2R,3R,4S)-3-(acetylamino)-6-carboxy-2-[(1R,2R)-1,2,3- trihydroxypropyl]-3,4-dihydro-2H-pyran-4-yl]carbamimidoyl]carbamoyl]amino]-2-[(1R,2R)-1,2, 3-trihydroxypropyl]-3,4-dihydro-2H-pyran-6-carboxylic Acid
Catalogue No.:PA 26 0280010
CAS :
NA
Molecular Formula : C24H36N6O15
Molecular Weight : 648.58