发明人冯建国,杨光,徐明华. "Method for the Synthesis of 4-Acetyl-1,3-dimethyl-1H-pyrazol-5(4H)-one" [P]. 中国发明专利, 专利号 CN 114168749 B, 授权公告日 2024-08-07.
发明人杨光,刘建华,罗永刚. "A Process for Preparing High-Purity 4-Acetyl-1,3-dimethyl-1H-pyrazol-5(4H)-one" [P]. 中国发明专利, 专利号 CN 108372358 A, 授权公告日 2022-10-04.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chem., 2014, 112, 3833-3859.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2013, 1510, 5601-5620.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of 4-Acetyl-1,3-dimethyl-1H-pyrazol-5(4H)-one Using HRMS and NMR". J. Chromatogr. A, 2024, 2160, (8), 1019-1046.