Fischer A B, Schröder R, Hughes D C. "一种的合成方法" [P]. US Patent, US 11240503 B2, 2021-10-16.
发明人陈志强,杨光,李文辉. "Method for the Synthesis of 4-Cyanopyridine-2-sulfonic acid" [P]. 中国发明专利, 专利号 CN 112155679 B, 授权公告日 2016-11-01.
发明人何建平,徐明华,钱学锋. "A Process for Preparing High-Purity 4-Cyanopyridine-2-sulfonic acid" [P]. 中国发明专利, 专利号 CN 116614960 B, 授权公告日 2025-08-15.
参考文献 Literature
Wang L, Li J, Zhang H. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chem., 2025, 532, (2), 1624-1627.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Biomed. Chromatogr., 2025, 2416, 4121-4130.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of 4-Cyanopyridine-2-sulfonic acid Using HRMS and NMR". J. Pharm. Biomed. Anal., 2017, 155, (3), 9640-9663.