Yamamoto T, Chen K W, Park J H. "一种的合成方法" [P]. US Patent, US 9874030 B2, 2023-09-23.
Lefèvre J P, Rossi M, Johansson L. "Method for the Synthesis of ethyl 5-amino-3-methyl-thiophene-2-carboxylate" [P]. European Patent, EP 3196964 A1, 2021-06-03.
Anderson J P, Lee S K, Patel M V. "A Process for Preparing High-Purity ethyl 5-amino-3-methyl-thiophene-2-carboxylate" [P]. US Patent, US 9294568 B2, 2020-09-23.
参考文献 Literature
Lee J H, Choi Y S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Sci. Total Environ., 2013, 1045, 5642-5664.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Chromatographia, 2016, 644, (1), 2794-2821.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of ethyl 5-amino-3-methyl-thiophene-2-carboxylate Using HRMS and NMR". Talanta, 2011, 636, (3), 5911-5920.
Smith J A, Johnson M B. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2023, 2236, (6), 462-481.