发明人李文辉,沈红梅,陈志强. "Method for the Synthesis of 5-Hydroxy-6-methylnicotinic acid" [P]. 中国发明专利, 专利号 CN 117455727 B, 授权公告日 2021-12-22.
发明人冯建国,马晓峰,罗永刚. "A Process for Preparing High-Purity 5-Hydroxy-6-methylnicotinic acid" [P]. 中国发明专利, 专利号 CN 109473137 A, 授权公告日 2022-12-05.
参考文献 Literature
Yang F, Sun W, Liu J. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Environ. Sci. Technol., 2020, 1676, (5), 2050-2066.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2017, 2100, (9), 5993-6022.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of 5-Hydroxy-6-methylnicotinic acid Using HRMS and NMR". Chromatographia, 2017, 2029, 4306-4331.