发明人马晓峰,赵玉洁,冯建国. "Method for the Synthesis of 6-Chloro-5-(chloromethyl)-4-(difluoromethyl)nicotinic acid" [P]. 中国发明专利, 专利号 CN 110342754 B, 授权公告日 2018-09-14.
发明人刘建华,赵玉洁,孙丽萍. "A Process for Preparing High-Purity 6-Chloro-5-(chloromethyl)-4-(difluoromethyl)nicotinic acid" [P]. 中国发明专利, 专利号 CN 114246891 B, 授权公告日 2017-07-21.
参考文献 Literature
Zhang Y, Li Q, Chen T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Chromatogr. A, 2022, 632, (7), 3988-4013.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Phytochemistry, 2019, 1869, (10), 6385-6401.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of 6-Chloro-5-(chloromethyl)-4-(difluoromethyl)nicotinic acid Using HRMS and NMR". Biomed. Chromatogr., 2019, 492, 6291-6311.
Yang F, Sun W, Liu J. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Food Chem., 2014, 1862, (8), 7764-7772.