发明人罗永刚,高志强,王建平. "Method for the Synthesis of 5-Oxo-4-phenyl-4,5-dihydro-1h-pyrazole-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 117539578 A, 授权公告日 2015-07-12.
发明人刘建华,杨光,李文辉. "A Process for Preparing High-Purity 5-Oxo-4-phenyl-4,5-dihydro-1h-pyrazole-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111080177 A, 授权公告日 2025-11-03.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chem., 2020, 668, 4018-4040.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2011, 796, 9909-9915.
Xu M, Hu Y, Zhou D. "Identification and Structural Characterization of a Novel Degradation Product of 5-Oxo-4-phenyl-4,5-dihydro-1h-pyrazole-3-carboxylic acid Using HRMS and NMR". Molecules, 2018, 368, (10), 6337-6347.
Smith J A, Johnson M B. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Food Chem., 2020, 1079, 9593-9609.