发明人何建平,王建平,韩伟. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 117098071 A, 授权公告日 2021-05-28.
发明人周伟,郭海燕,唐晓军. "Method for the Synthesis of Ethyl 2,5-difluoro-4-methylbenzoate" [P]. 中国发明专利, 专利号 CN 109365005 A, 授权公告日 2021-10-21.
发明人郭海燕,韩伟,唐晓军. "A Process for Preparing High-Purity Ethyl 2,5-difluoro-4-methylbenzoate" [P]. 中国发明专利, 专利号 CN 109853234 B, 授权公告日 2019-12-03.
参考文献 Literature
Yamamoto K, Tanaka H, Suzuki T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Talanta, 2020, 349, 4114-4133.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chem., 2010, 2123, 3254-3284.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 2,5-difluoro-4-methylbenzoate Using HRMS and NMR". J. Chromatogr. A, 2020, 2046, (10), 8319-8347.