CAS号: 1862335-58-7 英文名称: ethyl (S)-2-(2-oxopyrrolidin-1-yl)butanoate 英文同义词: Levetiracetam Impurity G;Levetiracetam impurity G CRS;ethyl (S)-2-(2-oxopyrrolidin-1-yl)butanoate;Butanoic acid, 2-[(4-chloro-1-oxobutyl)amino]-, methyl ester;Levetiracetam Impurity 17/ethyl (S)-2-(2-oxopyrrolidin-1-yl)butanoate 中文名称: 左乙拉西坦杂质G 中文同义词: 左乙拉西坦杂质G 分子式: C9H16ClNO3 分子量: 221.68