发明人杨光,王建平,徐明华. "Method for the Synthesis of 4-Chloro-1-ethyl-3-phenyl-1H-pyrazole-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 110447113 A, 授权公告日 2016-06-13.
Nowak P, Rossi M, Lefèvre J P. "A Process for Preparing High-Purity 4-Chloro-1-ethyl-3-phenyl-1H-pyrazole-5-carboxylic acid" [P]. European Patent, EP 3573620 A1, 2024-07-24.
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". Food Chem., 2011, 1226, 2304-2323.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Molecules, 2014, 642, (10), 7721-7740.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of 4-Chloro-1-ethyl-3-phenyl-1H-pyrazole-5-carboxylic acid Using HRMS and NMR". Anal. Chem., 2012, 1903, (2), 5957-5970.
Jensen P, Larsen A M, Olsen K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Phytochemistry, 2023, 1060, (1), 8035-8042.