发明人赵玉洁,高志强,韩伟. "Method for the Synthesis of Ethyl 4-aminothiophene-3-carboxylate" [P]. 中国发明专利, 专利号 CN 113372225 A, 授权公告日 2021-12-15.
发明人冯建国,徐明华,郭海燕. "A Process for Preparing High-Purity Ethyl 4-aminothiophene-3-carboxylate" [P]. 中国发明专利, 专利号 CN 116331628 A, 授权公告日 2022-11-22.
参考文献 Literature
Brown R C, Davis S M. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Sci. Total Environ., 2025, 337, (4), 5907-5929.
Kim S H, Park J Y. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Agric. Food Chem., 2012, 1848, 1020-1046.
Yamamoto K, Tanaka H, Suzuki T. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 4-aminothiophene-3-carboxylate Using HRMS and NMR". J. Pharm. Biomed. Anal., 2019, 2461, 6934-6959.
Fischer P, Wagner E. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2020, 115, 926-954.