Jørgensen K, Johansson L, Björnsson E. "Method for the Synthesis of 1-methyl-4-(phenylamino)-1H-pyrazole-3-carboxylic acid" [P]. European Patent, EP 3181524 A1, 2017-05-04.
发明人唐晓军,何建平,林芳. "A Process for Preparing High-Purity 1-methyl-4-(phenylamino)-1H-pyrazole-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 110636514 B, 授权公告日 2015-01-10.
参考文献 Literature
Yamamoto K, Tanaka H, Suzuki T. "Development and Validation of an LC-MS/MS Method for the Determination of 1-methyl-4-(phenylamino)-1H-pyrazole-3-carboxylic acid in Pharmaceutical Formulations". Talanta, 2023, 2266, (3), 6-28.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of 1-methyl-4-(phenylamino)-1H-pyrazole-3-carboxylic acid as an Impurity". Sci. Total Environ., 2020, 444, 3639-3642.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of 1-methyl-4-(phenylamino)-1H-pyrazole-3-carboxylic acid Using HRMS and NMR". Chemosphere, 2023, 1931, 3095-3101.
Xu M, Hu Y, Zhou D. "Forced Degradation Studies to Evaluate 1-methyl-4-(phenylamino)-1H-pyrazole-3-carboxylic acid Profile in Drug Substances According to ICH Guidelines". Rapid Commun. Mass Spectrom., 2023, 1916, 7124-7133.