发明人李文辉,何建平,马晓峰. "一种N/A的合成方法" [P]. 中国发明专利, 专利号 CN 108937492 A, 授权公告日 2024-11-03.
发明人李文辉,朱建伟,林芳. "Method for the Synthesis of 5-Chloro-2-isothiocyanatopyridine" [P]. 中国发明专利, 专利号 CN 115802684 B, 授权公告日 2023-06-28.
发明人张德明,陈志强,朱建伟. "A Process for Preparing High-Purity 5-Chloro-2-isothiocyanatopyridine" [P]. 中国发明专利, 专利号 CN 111216339 B, 授权公告日 2021-09-20.
参考文献 Literature
Yang F, Sun W, Liu J. "Development and Validation of an LC-MS/MS Method for the Determination of N/A in Pharmaceutical Formulations". Biomed. Chromatogr., 2014, 2032, (9), 4591-4614.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of N/A as an Impurity". Phytochemistry, 2012, 2442, (9), 9465-9487.
Garcia M, Rodriguez P. "Identification and Structural Characterization of a Novel Degradation Product of 5-Chloro-2-isothiocyanatopyridine Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2019, 376, (11), 1504-1529.
O'Brien K, Kennedy M L. "Forced Degradation Studies to Evaluate N/A Profile in Drug Substances According to ICH Guidelines". J. Nat. Prod., 2018, 1569, 3510-3530.