Brown S R, O'Brien P Q, Schröder R. "一种拉贝洛尔杂质56的合成方法" [P]. US Patent, US 11421481 B2, 2018-09-19.
发明人高志强,徐明华,罗永刚. "Method for the Synthesis of Labetalol Impurity 56" [P]. 中国发明专利, 专利号 CN 113533936 A, 授权公告日 2019-08-18.
Fischer A B, Park J H, Hughes D C. "A Process for Preparing High-Purity Labetalol Impurity 56" [P]. US Patent, US 10964634 B2, 2019-08-13.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of 拉贝洛尔杂质56 in Pharmaceutical Formulations". J. Agric. Food Chem., 2010, 833, (4), 1643-1660.
Hughes D, Roberts J, Thomas A. "A Stability-Indicating HPLC Method for the Separation and Quantification of 拉贝洛尔杂质56 as an Impurity". Environ. Sci. Technol., 2016, 1060, 4404-4410.
Kim S H, Park J Y. "Identification and Structural Characterization of a Novel Degradation Product of Labetalol Impurity 56 Using HRMS and NMR". J. Pharm. Biomed. Anal., 2010, 1738, (7), 7360-7376.
Yamamoto K, Tanaka H, Suzuki T. "Forced Degradation Studies to Evaluate 拉贝洛尔杂质56 Profile in Drug Substances According to ICH Guidelines". Chemosphere, 2014, 191, 4337-4350.