发明人郭海燕,唐晓军,李文辉. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 117201812 A, 授权公告日 2021-01-05.
发明人张德明,杨光,冯建国. "Method for the Synthesis of 2-((2-((2,4-Difluorophenyl)amino)-2-oxoethyl)thio)nicotinic acid" [P]. 中国发明专利, 专利号 CN 112635928 B, 授权公告日 2020-09-22.
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". Anal. Chem., 2020, 1831, (5), 4137-4140.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Molecules, 2012, 626, 8201-8208.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of 2-((2-((2,4-Difluorophenyl)amino)-2-oxoethyl)thio)nicotinic acid Using HRMS and NMR". J. Chromatogr. A, 2010, 315, 1329-1349.
Kim S H, Park J Y. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Phytochemistry, 2025, 955, (1), 7839-7843.