发明人韩伟,徐明华,刘建华. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 110630471 A, 授权公告日 2024-01-03.
发明人沈红梅,何建平,黄志刚. "Method for the Synthesis of 3,5-Diethyl 6-acetohydrazido-2-oxo-1,2-dihydropyridine-3,5-dicarboxylate" [P]. 中国发明专利, 专利号 CN 109451993 A, 授权公告日 2019-10-22.
发明人冯建国,何建平,孙丽萍. "A Process for Preparing High-Purity 3,5-Diethyl 6-acetohydrazido-2-oxo-1,2-dihydropyridine-3,5-dicarboxylate" [P]. 中国发明专利, 专利号 CN 111933238 B, 授权公告日 2023-11-25.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Phytochemistry, 2021, 1585, 6276-6294.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2021, 1637, (5), 715-731.