发明人杨光,马晓峰,冯建国. "Method for the Synthesis of 4,4'-Methylenebis(3-methyl-1-phenyl-1H-pyrazol-5(4H)-one)" [P]. 中国发明专利, 专利号 CN 109029617 B, 授权公告日 2016-09-21.
发明人罗永刚,钱学锋,马晓峰. "A Process for Preparing High-Purity 4,4'-Methylenebis(3-methyl-1-phenyl-1H-pyrazol-5(4H)-one)" [P]. 中国发明专利, 专利号 CN 116255916 B, 授权公告日 2023-01-13.
参考文献 Literature
Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2024, 1189, (9), 4802-4829.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chim. Acta, 2018, 1186, (6), 765-768.
Brown R C, Davis S M. "Identification and Structural Characterization of a Novel Degradation Product of 4,4'-Methylenebis(3-methyl-1-phenyl-1H-pyrazol-5(4H)-one) Using HRMS and NMR". Chemosphere, 2011, 1109, 6400-6428.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Sep. Sci., 2011, 2243, (3), 9738-9755.