发明人孙丽萍,刘建华,杨光. "Method for the Synthesis of Ethyl N-{2-[2-(2,4-difluorophenyl)hydrazono]-3-oxobutanoyl}carbamate" [P]. 中国发明专利, 专利号 CN 112096114 B, 授权公告日 2024-02-26.
Patel M V, Anderson J P, Stevens L M. "A Process for Preparing High-Purity Ethyl N-{2-[2-(2,4-difluorophenyl)hydrazono]-3-oxobutanoyl}carbamate" [P]. US Patent, US 11203640 B2, 2023-08-11.
参考文献 Literature
Martinez C, Lopez D R. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chem., 2025, 1429, (3), 609-620.
Kumar A, Sharma P, Patel R S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2022, 1608, (11), 3729-3749.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl N-{2-[2-(2,4-difluorophenyl)hydrazono]-3-oxobutanoyl}carbamate Using HRMS and NMR". Anal. Chim. Acta, 2025, 1845, 5670-5685.
Brown R C, Davis S M. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Nat. Prod., 2016, 818, (8), 1428-1452.