奥拉西坦杂质   Oxiracetam  impurity

ALT-Ⅰ Glycine anhydride;oxiracetaM related substance ISF3890  106-57-0

ALT-Ⅱ N-(2-aMino-2-oxoethyl)-2-(4-hydroxy-2oxopyrrolidin-1-yl)acetaMide;oxiracetaM related substance ISF3886  120428-80-0

ALT-Ⅲ  2-(2-oxo-2,5-dihydro-1H-pyrrol-1yl)acetaMide;oxiracetaM related substance ISF2560  62833-66-3

ALT-Ⅳ  4-Hydroxy-2-oxo-1-pyrrolidineacetic acid;oxiracetaM related substance ISF3138  77191-37-8

ALT-Ⅴ  2-(2-oxopyrrolidin-1yl)acetaMide;oxiracetaM related substance  7491-74-9

ALT-Ⅵ  Methyl 4-hydroxy-2-oxopyrrolidine-1acetate;oxiracetaM related substance 85614-52-4

ALT-Ⅶ  ethyl 4-hydroxy-2-oxopyrrolidine-1acetate;oxiracetaM related substance  62613-81-4