Brown S R, Davis P L, Chen K W. "一种的合成方法" [P]. US Patent, US 11969689 B2, 2019-07-20.
发明人杨光,王建平,李文辉. "Method for the Synthesis of 2-Imino-6-methoxy-2H-chromene-3-carboxamide" [P]. 中国发明专利, 专利号 CN 109624803 B, 授权公告日 2018-09-27.
Rossi M, Kowalski A, Nielsen H. "A Process for Preparing High-Purity 2-Imino-6-methoxy-2H-chromene-3-carboxamide" [P]. European Patent, EP 3197224 A1, 2020-04-03.
参考文献 Literature
Jensen P, Larsen A M, Olsen K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Agric. Food Chem., 2014, 1872, 5080-5089.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Environ. Sci. Technol., 2013, 1125, 2108-2115.