发明人沈红梅,李文辉,高志强. "Method for the Synthesis of Ethyl 2-(3-bromo-5-nitropyridin-4-yl)-4-methoxy-3-oxobutanoate" [P]. 中国发明专利, 专利号 CN 113492610 B, 授权公告日 2021-04-12.
发明人张德明,周伟,沈红梅. "A Process for Preparing High-Purity Ethyl 2-(3-bromo-5-nitropyridin-4-yl)-4-methoxy-3-oxobutanoate" [P]. 中国发明专利, 专利号 CN 109188812 B, 授权公告日 2023-08-19.
参考文献 Literature
Lee J H, Choi Y S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Food Chem., 2020, 2191, 1636-1659.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2014, 1777, (10), 6529-6533.
Yamamoto K, Tanaka H, Suzuki T. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 2-(3-bromo-5-nitropyridin-4-yl)-4-methoxy-3-oxobutanoate Using HRMS and NMR". J. Nat. Prod., 2013, 863, (2), 9833-9850.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Chromatographia, 2016, 1852, (7), 5585-5599.