Oseltamivir

Oseltamivir EP Impurity A Oseltamivir Impurity A:

(3R,4R,5S)-5-Acetamido-4-amino-3-(1-ethylpropoxy)cyclohex-1-ene-1-carboxylic acid formate ;CAS : 1391047-93-0 (base) ; C14H24N2O4 (base) ; MW: 284.35 ; C15H26N2O6 (base) ; MW: 330.38 ;
Oseltamivir EP Impurity B Oseltamivir Impurity B:

Ethyl (1R,2R,3S,4R,5S)-4-acetamido-5-amino-2-azido-3-(1-ethylpropoxy) cyclohexanecarboxylate ; C16H29N5O4 ; MW: 355.43 ;
Oseltamivir EP Impurity C Oseltamivir Impurity C:

(3R,4R,5S)-4-Acetamido-5-amino-3-(1-ethylpropoxy)cyclohex-1-ene-1-carboxylic acid ;

CAS : 187227-45-8 ; C14H24N2O4 ; MW: 284.35 ;
Oseltamivir EP Impurity D Oseltamivir Impurity D:

Ethyl 4-acetamido-3-hydroxybenzoate ; CAS : 1346604-18-9 ; C11H13NO4 ; MW: 223.23 ;
Oseltamivir EP Impurity D Oseltamivir  Impurity E:

Methyl (3R,4R,5S)-4-acetamido-5-amino-3-(1-ethylpropoxy)cyclohex-1-ene-1-carboxylate ;

CAS : 208720-71-2 ; C15H26N2O4 ; MW: 298.38 ;
Oseltamivir EP Impurity F Oseltamivir Impurity F:

Ethyl (3R,4R,5S)-4-acetamido-5-amino-3-(1-methylpropoxy)cyclohex-1-ene-1-carboxylate formate ; CAS : 1052063-37-2 (base) ; C15H26N2O4 (base) ; MW: 298.38 ;C16H28N2O6 (formate salt) ; MW: 344.40 ;
Oseltamivir EP Impurity G Oseltamivir Impurity G:

Ethyl (3R,4R,5S)-5-acetamido-4-amino-3-(1-ethylpropoxy)cyclohex-1-ene-1-carboxylate ;

CAS : 956267-10-0 (base) ; C16H28N2O4 ; MW: 312.40 ;