Klinger H, O'Brien P Q, Davis P L. "一种比索洛尔杂质68的合成方法" [P]. US Patent, US 11432729 B2, 2016-05-08.
发明人陈志强,孙丽萍,刘建华. "Method for the Synthesis of Bisoprolol Impurity 68" [P]. 中国发明专利, 专利号 CN 115031777 B, 授权公告日 2017-07-09.
Jørgensen K, Schröder R, Björnsson E. "A Process for Preparing High-Purity Bisoprolol Impurity 68" [P]. European Patent, EP 3527318 A1, 2022-08-17.
参考文献 Literature
Hughes D, Roberts J, Thomas A. "Development and Validation of an LC-MS/MS Method for the Determination of 比索洛尔杂质68 in Pharmaceutical Formulations". Anal. Chim. Acta, 2019, 1478, (7), 302-326.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of 比索洛尔杂质68 as an Impurity". J. Nat. Prod., 2011, 2112, (2), 8352-8368.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of Bisoprolol Impurity 68 Using HRMS and NMR". Chromatographia, 2012, 1402, 6754-6760.