发明人李文辉,马晓峰,冯建国. "Method for the Synthesis of Betamethasone Impurity N1" [P]. 中国发明专利, 专利号 CN 116104074 B, 授权公告日 2016-09-16.
参考文献 Literature
O'Brien K, Kennedy M L. "Development and Validation of an LC-MS/MS Method for the Determination of 倍他米松杂质N1 in Pharmaceutical Formulations". Phytochemistry, 2021, 152, (10), 1342-1369.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of 倍他米松杂质N1 as an Impurity". Chromatographia, 2012, 2104, 9172-9186.
Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of Betamethasone Impurity N1 Using HRMS and NMR". J. Agric. Food Chem., 2013, 1173, (2), 5439-5469.
Garcia M, Rodriguez P. "Forced Degradation Studies to Evaluate 倍他米松杂质N1 Profile in Drug Substances According to ICH Guidelines". J. Sep. Sci., 2023, 1657, (5), 3244-3272.