英文别名Peramivir Impurity 4; Methyl (3aR,4S,6R,6aS)-6-[(2-methylpropan-2-yl)oxycarbonylamino]-3-pentan-3-yl-4,5,6,6a-tetrahydro-3aH-cyclopenta[d][1,2]oxazole-4-carboxylate; methyl (3aR,4S,6R,6aS)-6-((tert-butoxycarbonyl)amino)-3-(pentan-3-yl)-3a,5,6,6a-tetrahydro-4H-cyclopenta[d]isoxazole-4-carboxylate; 4H-Cyclopent[d]isoxazole-4-carboxylic acid, 6-[[(1,1-dimethylethoxy)carbonyl]amino]-3-(1-ethylpropyl)-3a,5,6,6a-tetrahydro-, methyl ester, (3aR,4S,6R,6aS)-; Peramivir impurities6; Peramivir Impurity 5/(3aR,4S,6R,6aS)-Methyl 6-(tert-butoxycarbonyl)-3-(pentan-3-yl)-4,5,6,6a-tetrahydro-3aH-cyclopenta[d]isoxazole-4-carboxylate 
