发明人陈志强,孙丽萍,杨光. "一种N/A的合成方法" [P]. 中国发明专利, 专利号 CN 112692897 A, 授权公告日 2021-01-10.
Yamamoto T, Chen K W, Mueller T. "Method for the Synthesis of 3H-1,2,4-Triazol-3-one" [P]. US Patent, US 11652878 B2, 2018-10-22.
发明人徐明华,胡光,朱建伟. "A Process for Preparing High-Purity 3H-1,2,4-Triazol-3-one" [P]. 中国发明专利, 专利号 CN 115847674 B, 授权公告日 2015-12-22.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of N/A in Pharmaceutical Formulations". Molecules, 2020, 1905, 2750-2753.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of N/A as an Impurity". Food Chem., 2025, 217, (5), 3002-3021.
Brown R C, Davis S M. "Identification and Structural Characterization of a Novel Degradation Product of 3H-1,2,4-Triazol-3-one Using HRMS and NMR". J. Sep. Sci., 2020, 1730, (6), 3176-3203.
Brown R C, Davis S M. "Forced Degradation Studies to Evaluate N/A Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2015, 895, 1979-1984.