Björnsson E, Sørensen M, Lefèvre J P. "一种的合成方法" [P]. European Patent, EP 3243079 A1, 2023-08-16.
发明人冯建国,钱学锋,徐明华. "Method for the Synthesis of 4-(2,2-Difluoropropoxy)-3-methylbenzoic acid" [P]. 中国发明专利, 专利号 CN 114661659 A, 授权公告日 2023-03-09.
发明人胡光,高志强,郭海燕. "A Process for Preparing High-Purity 4-(2,2-Difluoropropoxy)-3-methylbenzoic acid" [P]. 中国发明专利, 专利号 CN 114119124 A, 授权公告日 2023-08-13.
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, 2013, 497, (6), 5012-5016.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2013, 2088, (2), 5474-5493.