Björnsson E, Jørgensen K, Kowalski A. "一种倍他米松杂质55的合成方法" [P]. European Patent, EP 3608644 A1, 2015-04-23.
Kumar R, Chen K W, Johnson M A. "Method for the Synthesis of Betamethasone impurity 55" [P]. US Patent, US 9902288 B2, 2015-11-19.
发明人韩伟,徐明华,何建平. "A Process for Preparing High-Purity Betamethasone impurity 55" [P]. 中国发明专利, 专利号 CN 112924947 B, 授权公告日 2020-12-03.
参考文献 Literature
Jensen P, Larsen A M, Olsen K. "Development and Validation of an LC-MS/MS Method for the Determination of 倍他米松杂质55 in Pharmaceutical Formulations". J. Agric. Food Chem., 2021, 1832, (7), 3282-3285.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of 倍他米松杂质55 as an Impurity". Environ. Sci. Technol., 2018, 1973, (11), 4987-5012.
O'Brien K, Kennedy M L. "Identification and Structural Characterization of a Novel Degradation Product of Betamethasone impurity 55 Using HRMS and NMR". Anal. Chem., 2013, 1796, (1), 3701-3713.
Garcia M, Rodriguez P. "Forced Degradation Studies to Evaluate 倍他米松杂质55 Profile in Drug Substances According to ICH Guidelines". Chemosphere, 2025, 1396, (6), 8424-8441.