发明人王建平,冯建国,罗永刚. "Method for the Synthesis of Methyl 5-ethylthiophene-2-carboxylate" [P]. 中国发明专利, 专利号 CN 112709333 B, 授权公告日 2021-01-27.
发明人徐明华,张德明,罗永刚. "A Process for Preparing High-Purity Methyl 5-ethylthiophene-2-carboxylate" [P]. 中国发明专利, 专利号 CN 117606255 A, 授权公告日 2022-04-06.
参考文献 Literature
Zhang Y, Li Q, Chen T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Environ. Sci. Technol., 2015, 1836, (9), 1259-1264.
Kim S H, Park J Y. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chim. Acta, 2012, 1035, (7), 4054-4060.
Kim S H, Park J Y. "Identification and Structural Characterization of a Novel Degradation Product of Methyl 5-ethylthiophene-2-carboxylate Using HRMS and NMR". Food Chem., 2017, 1953, (12), 9904-9931.
Kumar A, Sharma P, Patel R S. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2011, 300, (7), 9095-9106.