67118-31-4

• 常用中文名：乙基-2-氧代-1-吡咯烷乙酸
• 常用英文名：(2S)-2-(2-Oxo-1-pyrrolidinyl)butanoic acid
• CAS号：67118-31-4
• 分子式：C₈H₁₃NO₃
• 分子量：171.194
• 相关类别： 分析化学 标准品 药典标准品和杂志标准品
• 发布时间：2018-12-27 14:30:30
• 更新时间：2026-07-08 12:00:54

名称

• 中文名: alpha-乙基-2-氧代-1-吡咯烷乙酸
• 英文名: 2-(2-Oxopyrrolidin-1-yl)butanoic acid
• 中文别名: 乙拉西坦羧酸; 左乙拉西坦杂质A; 2-(2-氧代-1- 吡咯烷基)丁酸; 左乙拉西坦杂质杂质A; 乙拉西坦羧酸化学对照品; 2-(2-氧代吡咯烷-1-基)丁酸 (左乙拉西坦杂质); 左乙拉西坦杂质8(左乙拉西坦杂质A); 左乙拉西坦杂质A-ZYT-01; alpha-乙基-2-氧代-1-吡咯烷乙酸(左乙拉西坦杂质A); 左乙拉西坦中间体(LVA20); 左乙拉西坦杂质杂质-ZA
• 英文别名: 2-(2-oxo-1-pyrrolidinyl)acetic acid ethyl ester; Levetiracetam Impurity A (Levetiracetam Cboxylic Acid Racemate); UNII:T5GZ0UL12V; Ethyl (2-oxopyrrolidin-1-yl)acetate; 1-Pyrrolidineacetic acid, α-ethyl-2-oxo; Levetiracetam Impurity 8（Levetiracetam Impurity A）; 2-(2-Oxo-1-pyrrolidinyl)butanoic acid; LevetiracetaM IMpurity A; Levatiracetam Impurity A; Ethyl 2-oxo-1-pyrrolidineacetate; Ethyl-2-oxo-1-pyrrolidineacetic acid; EtiracetaM Cboxylic Acid; (2RS)-2-(2-Oxopyrrolidin-1-yl)butanoic acid; alpha-Ethyl-2-oxo-1-pyrrolidineacetic acid; Levetiracetam Impurity AQ: What is Levetiracetam Impurity A Q: What is the CAS Number of Levetiracetam Impurity A Q: What is the storage condition of Levetiracetam Impurity A Q: What e the applications of Levetiracetam Impurity A; 2-(2-Oxopyrrolidin-1-yl)butanoic acid (Levetiracetam Impurity); (2S)-2-(2-Oxopyrrolidin-1-yl)butanoic acid; Levetiracetam impurity 1/Levetiracetam Impurity A/Levetiracetam Cboxylic Acid Racemate/(2RS)-2-(2-Oxopyrrolidin-1-yl)butanoic acid; LEVETIRACETAM IMP A; (2s)-2- (2- oxopyrrolidin -1-yl) butanoic acid; 2-(2-oxopyrrolidin-1-yl)butanamide; 2-(2-oxo-1-pyrrolidinyl)butyric acid

物化性质

• 密度: 1.2±0.1 g/cm3
• 沸点: 371.0±25.0 °C at 760 mmHg
• 熔点: 155-158ºC
• 分子式: C₈H₁₃NO₃
• 分子量: 171.194
• 闪点: 178.2±23.2 °C
• 精确质量: 171.089539
• PSA: 57.61000
• LogP: 0.12
• 蒸汽压: 0.0±1.8 mmHg at 25°C
• 折射率: 1.517
• 储存条件: 2-8℃，干燥

安全

• 海关编码: 2933790090

合成路线

86815-10-3 ~89% 67118-31-4

文献：Valenta, Vladimir; Sindelar, Karel; Holubek, Jiri; Ryska, Miroslav Collection of Czechoslovak Chemical Communications, 1990 , vol. 55, # 6 p. 1613 - 1629

上下游产品

上游产品  1
86815-10-3
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海关

海关编码	2933790090
中文概述	2933790090 其他内酰胺. 增值税率:17.0% 退税率:9.0% 监管条件:无 最惠国关税:9.0% 普通关税:20.0%
申报要素	品名, 成分含量, 用途, 乌洛托品请注明外观, 6－己内酰胺请注明外观, 签约日期
Summary	2933790090. other lactams. VAT:17.0%. Tax rebate rate:9.0%. . MFN tariff:9.0%. General tariff:20.0%