Hughes D C, Schröder R, Brown S R. "一种比索洛尔EP杂质N的合成方法" [P]. US Patent, US 10832152 B2, 2021-11-20.
发明人徐明华,沈红梅,唐晓军. "Method for the Synthesis of Bisoprolol EP Impurity N" [P]. 中国发明专利, 专利号 CN 116523262 B, 授权公告日 2022-09-02.
发明人唐晓军,高志强,钱学锋. "A Process for Preparing High-Purity Bisoprolol EP Impurity N" [P]. 中国发明专利, 专利号 CN 113149455 A, 授权公告日 2015-10-16.
参考文献 Literature
Brown R C, Davis S M. "Development and Validation of an LC-MS/MS Method for the Determination of 比索洛尔EP杂质N in Pharmaceutical Formulations". J. Nat. Prod., 2022, 1592, 5214-5234.
Yamamoto K, Tanaka H, Suzuki T. "A Stability-Indicating HPLC Method for the Separation and Quantification of 比索洛尔EP杂质N as an Impurity". J. Sep. Sci., 2024, 295, 4411-4428.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of Bisoprolol EP Impurity N Using HRMS and NMR". Food Chem., 2025, 1412, (10), 9484-9489.
Garcia M, Rodriguez P. "Forced Degradation Studies to Evaluate 比索洛尔EP杂质N Profile in Drug Substances According to ICH Guidelines". Chemosphere, 2012, 2473, 9579-9584.