发明人韩伟,刘建华,高志强. "一种4-硼-L-苯丙氨酸杂质4的合成方法" [P]. 中国发明专利, 专利号 CN 109353982 A, 授权公告日 2018-01-04.
发明人周伟,李文辉,郭海燕. "Method for the Synthesis of BPA Impurity 4" [P]. 中国发明专利, 专利号 CN 109721311 B, 授权公告日 2018-09-07.
Fischer A B, Anderson J P, Mueller T. "A Process for Preparing High-Purity BPA Impurity 4" [P]. US Patent, US 9942525 B2, 2017-01-12.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of 4-硼-L-苯丙氨酸杂质4 in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2014, 1888, (12), 6178-6182.
Jensen P, Larsen A M, Olsen K. "A Stability-Indicating HPLC Method for the Separation and Quantification of 4-硼-L-苯丙氨酸杂质4 as an Impurity". Molecules, 2017, 1809, (10), 1616-1624.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of BPA Impurity 4 Using HRMS and NMR". Biomed. Chromatogr., 2010, 1310, (7), 5210-5231.
Wang L, Li J, Zhang H. "Forced Degradation Studies to Evaluate 4-硼-L-苯丙氨酸杂质4 Profile in Drug Substances According to ICH Guidelines". J. Agric. Food Chem., 2023, 1578, (2), 5759-5769.