发明人杨光,罗永刚,马晓峰. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 112587919 A, 授权公告日 2016-08-23.
Mueller T, Johnson M A, Anderson J P. "Method for the Synthesis of 2-(4-Chlorophenyl)-1,3-diazaspiro[4.4]non-1-en-4-one" [P]. US Patent, US 11877149 B2, 2025-12-03.
发明人罗永刚,郭海燕,朱建伟. "A Process for Preparing High-Purity 2-(4-Chlorophenyl)-1,3-diazaspiro[4.4]non-1-en-4-one" [P]. 中国发明专利, 专利号 CN 110793557 A, 授权公告日 2016-09-15.
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". J. Sep. Sci., 2019, 2298, (10), 6431-6454.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Biomed. Chromatogr., 2019, 413, 155-159.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of 2-(4-Chlorophenyl)-1,3-diazaspiro[4.4]non-1-en-4-one Using HRMS and NMR". Phytochemistry, 2023, 1865, (4), 4734-4762.
Kumar A, Sharma P, Patel R S. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Environ. Sci. Technol., 2013, 199, (12), 1437-1449.