发明人孙丽萍,高志强,冯建国. "Method for the Synthesis of Methyl 4-chloro-3-(difluoromethoxy)-5-(methylthio)thiophene-2-carboxylate" [P]. 中国发明专利, 专利号 CN 117646777 A, 授权公告日 2018-01-19.
发明人李文辉,黄志刚,冯建国. "A Process for Preparing High-Purity Methyl 4-chloro-3-(difluoromethoxy)-5-(methylthio)thiophene-2-carboxylate" [P]. 中国发明专利, 专利号 CN 108974077 A, 授权公告日 2019-04-10.
参考文献 Literature
Jensen P, Larsen A M, Olsen K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Talanta, 2013, 2380, 418-427.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Food Chem., 2014, 2446, (4), 3776-3791.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of Methyl 4-chloro-3-(difluoromethoxy)-5-(methylthio)thiophene-2-carboxylate Using HRMS and NMR". J. Nat. Prod., 2020, 667, (12), 750-771.
O'Brien K, Kennedy M L. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chim. Acta, 2021, 2356, (11), 6921-6934.