发明人王建平,罗永刚,郑宇鹏. "Method for the Synthesis of 2-(4-Chloro-3-methoxyphenyl)-2,2-difluoroacetic acid" [P]. 中国发明专利, 专利号 CN 115429003 A, 授权公告日 2022-03-11.
发明人韩伟,郭海燕,罗永刚. "A Process for Preparing High-Purity 2-(4-Chloro-3-methoxyphenyl)-2,2-difluoroacetic acid" [P]. 中国发明专利, 专利号 CN 109562879 B, 授权公告日 2023-10-23.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Sep. Sci., 2010, 520, (2), 7221-7228.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chem., 2013, 298, (7), 3936-3946.
Brown R C, Davis S M. "Identification and Structural Characterization of a Novel Degradation Product of 2-(4-Chloro-3-methoxyphenyl)-2,2-difluoroacetic acid Using HRMS and NMR". Chromatographia, 2019, 851, (5), 8475-8484.
Chen X Y, Liu M, Zhao W Q. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Nat. Prod., 2013, 1930, (12), 7854-7862.