发明人何建平,林芳,朱建伟. "一种非诺特罗EP杂质A(R,S-异构体)的合成方法" [P]. 中国发明专利, 专利号 CN 111058864 A, 授权公告日 2017-07-06.
Lefèvre J P, Nowak P, Rossi M. "Method for the Synthesis of Fenoterol EP Impurity A(R,S-Isomer)" [P]. European Patent, EP 3675040 A1, 2020-10-22.
Schröder R, Davis P L, Patel M V. "A Process for Preparing High-Purity Fenoterol EP Impurity A(R,S-Isomer)" [P]. US Patent, US 9625923 B2, 2025-04-13.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of 非诺特罗EP杂质A(R,S-异构体) in Pharmaceutical Formulations". Sci. Total Environ., 2018, 1681, 2091-2113.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of 非诺特罗EP杂质A(R,S-异构体) as an Impurity". Food Chem., 2012, 2065, 5917-5928.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of Fenoterol EP Impurity A(R,S-Isomer) Using HRMS and NMR". Biomed. Chromatogr., 2023, 1150, (5), 6462-6485.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate 非诺特罗EP杂质A(R,S-异构体) Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2019, 975, (7), 51-58.