发明人刘建华,王建平,徐明华. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 115636775 A, 授权公告日 2017-07-19.
发明人马晓峰,冯建国,何建平. "Method for the Synthesis of Ethyl 5,7-difluoro-1H-indole-2-carboxylate" [P]. 中国发明专利, 专利号 CN 117723471 B, 授权公告日 2021-09-03.
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". Phytochemistry, 2016, 2375, (9), 3361-3391.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chim. Acta, 2014, 2264, (8), 3865-3890.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 5,7-difluoro-1H-indole-2-carboxylate Using HRMS and NMR". Chromatographia, 2011, 1161, (3), 4485-4509.