Lee S K, Davis P L, Klinger H. "一种的合成方法" [P]. US Patent, US 9388298 B2, 2023-05-09.
Chen K W, Williams B T, Schröder R. "Method for the Synthesis of 4,4-Dimethyl-2-(2-methylbenzoyl)-1-phenylpyrazolidin-3-one" [P]. US Patent, US 9919778 B2, 2016-05-28.
Hughes D C, Yamamoto T, Klinger H. "A Process for Preparing High-Purity 4,4-Dimethyl-2-(2-methylbenzoyl)-1-phenylpyrazolidin-3-one" [P]. US Patent, US 9737871 B2, 2017-12-02.
参考文献 Literature
Zhou X P, Huang L, Wu G. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chem., 2020, 1387, (12), 677-691.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2019, 1864, 1831-1857.
Kim S H, Park J Y. "Identification and Structural Characterization of a Novel Degradation Product of 4,4-Dimethyl-2-(2-methylbenzoyl)-1-phenylpyrazolidin-3-one Using HRMS and NMR". J. Sep. Sci., 2015, 1175, 7048-7078.