Fischer A B, Park J H, Yamamoto T. "一种的合成方法" [P]. US Patent, US 10813629 B2, 2020-06-24.
发明人郑宇鹏,郭海燕,沈红梅. "Method for the Synthesis of 4-Ethyl-1-phenylpyrazolidin-3-one" [P]. 中国发明专利, 专利号 CN 112551762 B, 授权公告日 2020-07-05.
发明人朱建伟,徐明华,李文辉. "A Process for Preparing High-Purity 4-Ethyl-1-phenylpyrazolidin-3-one" [P]. 中国发明专利, 专利号 CN 110084339 B, 授权公告日 2016-02-11.
参考文献 Literature
Mueller T, Schmidt R K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Biomed. Chromatogr., 2024, 1502, 3816-3844.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Sci. Total Environ., 2020, 150, (8), 1079-1104.
O'Brien K, Kennedy M L. "Identification and Structural Characterization of a Novel Degradation Product of 4-Ethyl-1-phenylpyrazolidin-3-one Using HRMS and NMR". Anal. Chim. Acta, 2025, 1513, 4866-4876.