发明人孙丽萍,徐明华,韩伟. "Method for the Synthesis of 1-(2,2-difluoroethyl)piperidine-4-carboxylic acid hydrochloride" [P]. 中国发明专利, 专利号 CN 108648965 A, 授权公告日 2018-07-02.
发明人马晓峰,郑宇鹏,沈红梅. "A Process for Preparing High-Purity 1-(2,2-difluoroethyl)piperidine-4-carboxylic acid hydrochloride" [P]. 中国发明专利, 专利号 CN 114627598 A, 授权公告日 2024-06-06.
参考文献 Literature
Yang F, Sun W, Liu J. "Development and Validation of an LC-MS/MS Method for the Determination of 1-(2,2-difluoroethyl)piperidine-4-carboxylic acid hydrochloride in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2013, 1799, 2196-2216.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of 1-(2,2-difluoroethyl)piperidine-4-carboxylic acid hydrochloride as an Impurity". J. Agric. Food Chem., 2016, 2407, 3974-4001.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of 1-(2,2-difluoroethyl)piperidine-4-carboxylic acid hydrochloride Using HRMS and NMR". Biomed. Chromatogr., 2016, 1965, 999-1020.