Oseltamivir BP Impurity A ; 4-N-Desacetyl-5-N-Acetyl Oseltamivir Acid Formate ; (3R,4R,5S)-5-Acetamido-4-amino-3-(1-ethylpropoxy)cyclohex-1-ene-1-carboxylic acid formate ; CAS # 1391047-93-0 (base) ;

Oseltamivir BP Impurity B ; Oseltamivir USP RC A ; 2-Azido-1,2-Dihydro Oseltamivir ; Ethyl (1R,2R,3S,4R,5S)-4-acetamido-5-amino-2-azido-3-(1-ethylpropoxy) cyclohexanecarboxylate ;

Oseltamivir BP Impurity C ; Oseltamivir Acid ; (3R,4R,5S)-4-Acetamido-5-amino-3-(1-ethylpropoxy)cyclohex-1-ene-1-carboxylic acid ; CAS # 187227-45-8 ;

Oseltamivir BP Impurity D ; Ethyl 4-acetamido-3-hydroxybenzoate ; CAS # 1346604-18-9 ;

Oseltamivir BP Impurity E ; Oseltamivir Acid Methyl Ester ; Methyl (3R,4R,5S)-4-acetamido-5-amino-3-(1-ethylpropoxy)cyclohex-1-ene-1-carboxylate ; CAS # 208720-71-2 ;

Oseltamivir BP Impurity F ; Oseltamivir C-Desmethyl Analog ; Ethyl (3R,4R,5S)-4-acetamido-5-amino-3-(1-methylpropoxy)cyclohex-1-ene-1-carboxylate formate ; CAS # 1052063-37-2 (base) ;

Oseltamivir BP Impurity�G ; 4-N-Desacetyl-5-N-Acetyl Oseltamivir HCl ; Ethyl (3R,4R,5S)-5-acetamido-4-amino-3-(1-ethylpropoxy)cyclohex-1-ene-1-carboxylate HCl ; CAS # 956267-10-0 (base) ;

Oseltamivir BP Impurity�G ; 4-N-Desacetyl-5-N-Acetyl Oseltamivir ; Ethyl (3R,4R,5S)-5-acetamido-4-amino-3-(1-ethylpropoxy)cyclohex-1-ene-1-carboxylate ; CAS # 956267-10-0 (base) ;

(3R,4R,5S)-4-(Acetylamino)-5-amino-3-(1-ethylpropoxy)-1-cyclohexene-1-carboxylic acid ethyl ester formate salt ;

(3R,4R,5S)-4-(Acetylamino)-5-amino-3-(1-ethylpropoxy)-1-cyclohexene-1-carboxylic acid ethyl ester phosphate salt ; CAS # 204255-11-8 ;

(3S,4R,5S)-4-Amino-5-amino-2-azido-3-(1-ethylpropoxy)cyclohexane-1-carboxylic Acid Ethyl Ester ;