Johnson M A, Fischer A B, Thompson G K. "一种福莫特罗杂质25 HCl的合成方法" [P]. US Patent, US 10488707 B2, 2017-06-21.
Schröder R, Park J H, Roberts E F. "Method for the Synthesis of Formoterol Fumarate Dihydrate EP Impurity G" [P]. US Patent, US 11321357 B2, 2017-03-10.
发明人郭海燕,朱建伟,马晓峰. "A Process for Preparing High-Purity Formoterol Fumarate Dihydrate EP Impurity G" [P]. 中国发明专利, 专利号 CN 115271364 A, 授权公告日 2020-05-06.
参考文献 Literature
Yang F, Sun W, Liu J. "Development and Validation of an LC-MS/MS Method for the Determination of 福莫特罗杂质25 HCl in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2010, 707, 4288-4293.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of 福莫特罗杂质25 HCl as an Impurity". J. Agric. Food Chem., 2024, 2362, 7125-7141.
Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of Formoterol Fumarate Dihydrate EP Impurity G Using HRMS and NMR". Anal. Chim. Acta, 2014, 1574, (12), 3599-3602.
Xu M, Hu Y, Zhou D. "Forced Degradation Studies to Evaluate 福莫特罗杂质25 HCl Profile in Drug Substances According to ICH Guidelines". Sci. Total Environ., 2019, 929, (3), 6190-6201.