发明人李文辉,徐明华,郑宇鹏. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 112747757 A, 授权公告日 2015-09-08.
发明人郭海燕,高志强,陈志强. "Method for the Synthesis of Ethyl 5-amino-4-methylthiophene-3-carboxylate" [P]. 中国发明专利, 专利号 CN 115361699 B, 授权公告日 2020-10-05.
发明人罗永刚,何建平,王建平. "A Process for Preparing High-Purity Ethyl 5-amino-4-methylthiophene-3-carboxylate" [P]. 中国发明专利, 专利号 CN 114851345 A, 授权公告日 2019-04-18.
参考文献 Literature
Yamamoto K, Tanaka H, Suzuki T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Molecules, 2025, 431, (7), 5089-5114.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chem., 2012, 1473, 4259-4289.
Wang L, Li J, Zhang H. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 5-amino-4-methylthiophene-3-carboxylate Using HRMS and NMR". Anal. Methods, 2025, 962, (7), 2836-2849.