Park J H, Johnson M A, Stevens L M. "一种的合成方法" [P]. US Patent, US 10697693 B2, 2015-06-14.
发明人高志强,郑宇鹏,王建平. "Method for the Synthesis of 5-ACetyl-2-acetylamino-4-methyl-thiophene-3-carboxylic acid methyl ester" [P]. 中国发明专利, 专利号 CN 114180838 B, 授权公告日 2025-12-03.
发明人郭海燕,朱建伟,周伟. "A Process for Preparing High-Purity 5-ACetyl-2-acetylamino-4-methyl-thiophene-3-carboxylic acid methyl ester" [P]. 中国发明专利, 专利号 CN 108365006 B, 授权公告日 2022-03-13.
参考文献 Literature
Fischer P, Wagner E. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Molecules, 2022, 874, (5), 6969-6998.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2014, 1082, (10), 1228-1243.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of 5-ACetyl-2-acetylamino-4-methyl-thiophene-3-carboxylic acid methyl ester Using HRMS and NMR". J. Nat. Prod., 2020, 258, 5987-6008.
Mueller T, Schmidt R K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Pharm. Biomed. Anal., 2023, 468, (2), 1151-1181.