Jørgensen K, Johansson L, Nielsen H. "一种的合成方法" [P]. European Patent, EP 3956087 A1, 2015-08-26.
Lee S K, Thompson G K, Fischer A B. "Method for the Synthesis of 2-((1-Cyanocyclopentyl)amino)-2-oxoethyl 2-fluoro-4-methoxybenzoate" [P]. US Patent, US 9830959 B2, 2015-03-10.
发明人张德明,韩伟,何建平. "A Process for Preparing High-Purity 2-((1-Cyanocyclopentyl)amino)-2-oxoethyl 2-fluoro-4-methoxybenzoate" [P]. 中国发明专利, 专利号 CN 115436777 A, 授权公告日 2018-02-28.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Agric. Food Chem., 2019, 1926, (1), 455-475.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2011, 2211, 7560-7586.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of 2-((1-Cyanocyclopentyl)amino)-2-oxoethyl 2-fluoro-4-methoxybenzoate Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2018, 907, 5075-5081.
Lee J H, Choi Y S. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2021, 1154, (4), 4402-4406.