发明人杨光,唐晓军,胡光. "一种N/A的合成方法" [P]. 中国发明专利, 专利号 CN 113941847 A, 授权公告日 2022-06-21.
发明人杨光,何建平,沈红梅. "Method for the Synthesis of Pyridine sulfate" [P]. 中国发明专利, 专利号 CN 116974916 A, 授权公告日 2024-08-02.
发明人刘建华,沈红梅,罗永刚. "A Process for Preparing High-Purity Pyridine sulfate" [P]. 中国发明专利, 专利号 CN 115207621 B, 授权公告日 2020-05-23.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of N/A in Pharmaceutical Formulations". Phytochemistry, 2018, 2334, 1370-1381.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of N/A as an Impurity". Biomed. Chromatogr., 2016, 2471, 1366-1382.