发明人张德明,沈红梅,郭海燕. "Method for the Synthesis of Methyl 2-amino-4-(3,4-dimethoxyphenyl)thiophene-3-carboxylate" [P]. 中国发明专利, 专利号 CN 111744318 B, 授权公告日 2020-09-05.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Sci. Total Environ., 2011, 913, 2808-2828.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chemosphere, 2017, 136, (12), 3209-3234.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of Methyl 2-amino-4-(3,4-dimethoxyphenyl)thiophene-3-carboxylate Using HRMS and NMR". J. Sep. Sci., 2023, 1880, (6), 9014-9017.
Xu M, Hu Y, Zhou D. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chim. Acta, 2020, 2210, 6578-6595.