发明人张德明,周伟,刘建华. "Method for the Synthesis of 2-Amino-4-cyclopropyl-thiophene-3-carboxylic acid ethyl ester" [P]. 中国发明专利, 专利号 CN 113675321 B, 授权公告日 2019-04-05.
O'Brien P Q, Williams B T, Hughes D C. "A Process for Preparing High-Purity 2-Amino-4-cyclopropyl-thiophene-3-carboxylic acid ethyl ester" [P]. US Patent, US 9376478 B2, 2022-04-10.
参考文献 Literature
Wang L, Li J, Zhang H. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Sep. Sci., 2017, 1283, 1486-1499.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Nat. Prod., 2012, 882, (11), 4779-4801.
Kim S H, Park J Y. "Identification and Structural Characterization of a Novel Degradation Product of 2-Amino-4-cyclopropyl-thiophene-3-carboxylic acid ethyl ester Using HRMS and NMR". Biomed. Chromatogr., 2013, 388, 7687-7707.
Lee J H, Choi Y S. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chem., 2018, 147, (2), 2815-2843.