发明人周伟,赵玉洁,陈志强. "Method for the Synthesis of Ethyl thieno[3,2-b]thiophene-2-carboxylate" [P]. 中国发明专利, 专利号 CN 113541327 B, 授权公告日 2018-08-19.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Molecules, 2010, 377, (12), 8267-8289.
Kumar A, Sharma P, Patel R S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Chromatogr. A, 2018, 2464, 6556-6574.
Kim S H, Park J Y. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl thieno[3,2-b]thiophene-2-carboxylate Using HRMS and NMR". Environ. Sci. Technol., 2019, 1263, (11), 6663-6680.
Wang L, Li J, Zhang H. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Biomed. Chromatogr., 2011, 1751, (1), 8622-8635.