发明人刘建华,韩伟,黄志刚. "Method for the Synthesis of 5-Cyano-1-methyl-4-nitro-1H-imidazole-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 110637451 B, 授权公告日 2017-12-12.
发明人胡光,孙丽萍,马晓峰. "A Process for Preparing High-Purity 5-Cyano-1-methyl-4-nitro-1H-imidazole-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 117454550 A, 授权公告日 2015-11-27.
参考文献 Literature
Brown R C, Davis S M. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Agric. Food Chem., 2021, 1453, 6170-6182.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2022, 1695, (6), 7595-7606.
Xu M, Hu Y, Zhou D. "Identification and Structural Characterization of a Novel Degradation Product of 5-Cyano-1-methyl-4-nitro-1H-imidazole-2-carboxylic acid Using HRMS and NMR". J. Chromatogr. A, 2023, 1631, (7), 426-450.