发明人徐明华,孙丽萍,郑宇鹏. "Method for the Synthesis of 2-Ethyl-4-(4-methylbenzylidene)oxazol-5(4H)-one" [P]. 中国发明专利, 专利号 CN 108395076 B, 授权公告日 2024-07-17.
Klinger H, Hughes D C, Thompson G K. "A Process for Preparing High-Purity 2-Ethyl-4-(4-methylbenzylidene)oxazol-5(4H)-one" [P]. US Patent, US 11332244 B2, 2016-11-25.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2017, 668, 607-632.
Garcia M, Rodriguez P. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Phytochemistry, 2020, 1758, (1), 8938-8944.
Wang L, Li J, Zhang H. "Identification and Structural Characterization of a Novel Degradation Product of 2-Ethyl-4-(4-methylbenzylidene)oxazol-5(4H)-one Using HRMS and NMR". Chromatographia, 2017, 541, (12), 9838-9850.
Brown R C, Davis S M. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Methods, 2021, 2452, (11), 1300-1312.