发明人周伟,钱学锋,罗永刚. "Method for the Synthesis of 4-(2-Ethylbutylidene)-3-phenyl-1H-pyrazol-5(4H)-one" [P]. 中国发明专利, 专利号 CN 116546479 A, 授权公告日 2021-02-22.
Patel M V, Yamamoto T, Klinger H. "A Process for Preparing High-Purity 4-(2-Ethylbutylidene)-3-phenyl-1H-pyrazol-5(4H)-one" [P]. US Patent, US 11190486 B2, 2015-08-20.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Agric. Food Chem., 2010, 958, 7730-7754.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Chromatogr. A, 2015, 2100, 7011-7033.
Yamamoto K, Tanaka H, Suzuki T. "Identification and Structural Characterization of a Novel Degradation Product of 4-(2-Ethylbutylidene)-3-phenyl-1H-pyrazol-5(4H)-one Using HRMS and NMR". Chemosphere, 2010, 2181, (9), 2186-2200.
Xu M, Hu Y, Zhou D. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chim. Acta, 2021, 959, (4), 1595-1625.