Patel M V, Roberts E F, Anderson J P. "一种呋塞米杂质21的合成方法" [P]. US Patent, US 10833722 B2, 2025-01-18.
发明人高志强,周伟,徐明华. "Method for the Synthesis of Furosemide Impurity 21" [P]. 中国发明专利, 专利号 CN 109674437 A, 授权公告日 2018-08-02.
发明人马晓峰,徐明华,韩伟. "A Process for Preparing High-Purity Furosemide Impurity 21" [P]. 中国发明专利, 专利号 CN 113229228 A, 授权公告日 2015-07-27.
参考文献 Literature
Brown R C, Davis S M. "Development and Validation of an LC-MS/MS Method for the Determination of 呋塞米杂质21 in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2023, 276, 9301-9313.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of 呋塞米杂质21 as an Impurity". Anal. Chim. Acta, 2016, 972, 8216-8234.
Garcia M, Rodriguez P. "Identification and Structural Characterization of a Novel Degradation Product of Furosemide Impurity 21 Using HRMS and NMR". Sci. Total Environ., 2016, 683, (10), 5572-5575.
Chen X Y, Liu M, Zhao W Q. "Forced Degradation Studies to Evaluate 呋塞米杂质21 Profile in Drug Substances According to ICH Guidelines". J. Agric. Food Chem., 2020, 562, 1962-1989.