英文别名(3R,4R,5S)-4-Amino-5-azido-3-(1-ethylpropoxy)-1-cyclohexene-1-carboxylic Acid Ethyl Ester; Ethyl (3R,4R,5S)-4-Amino-5-azido-3-(1-ethylpropoxy)-1-cyclohexene-1-carboxylate; Oseltamivir Impurity 121; Oseltamivir Impurity 177; (3R,4R,5S)-ethyl 4-amino-5-azido-3-(pentan-3-yloxy)cyclohex-1-enecarboxylate; ethyl (3S,4R,5S)-4-amino-5-azido-3-pentan-3-yloxycyclohexene-1-carboxylate 
