发明人孙丽萍,张德明,唐晓军. "Method for the Synthesis of Ethyl 2-(1h-pyrrol-1-yl)-4h,5h,7h-thieno[2,3-c]thiopyran-3-carboxylate" [P]. 中国发明专利, 专利号 CN 113956779 B, 授权公告日 2016-09-15.
发明人张德明,郭海燕,孙丽萍. "A Process for Preparing High-Purity Ethyl 2-(1h-pyrrol-1-yl)-4h,5h,7h-thieno[2,3-c]thiopyran-3-carboxylate" [P]. 中国发明专利, 专利号 CN 112603131 A, 授权公告日 2015-06-22.
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". Rapid Commun. Mass Spectrom., 2010, 1945, (2), 1986-2012.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2015, 986, 5228-5237.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 2-(1h-pyrrol-1-yl)-4h,5h,7h-thieno[2,3-c]thiopyran-3-carboxylate Using HRMS and NMR". Anal. Methods, 2020, 2358, (9), 9280-9287.
Zhang Y, Li Q, Chen T. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chem., 2010, 391, 2086-2102.