发明人沈红梅,刘建华,高志强. "Method for the Synthesis of Furazolidone Impurity 4" [P]. 中国发明专利, 专利号 CN 108669755 A, 授权公告日 2016-02-21.
发明人钱学锋,张德明,何建平. "A Process for Preparing High-Purity Furazolidone Impurity 4" [P]. 中国发明专利, 专利号 CN 111424304 B, 授权公告日 2017-07-18.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of 呋喃唑酮杂质4 in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2015, 2271, (3), 4545-4561.
Kim S H, Park J Y. "A Stability-Indicating HPLC Method for the Separation and Quantification of 呋喃唑酮杂质4 as an Impurity". Anal. Chim. Acta, 2016, 1565, 665-674.
Kumar A, Sharma P, Patel R S. "Identification and Structural Characterization of a Novel Degradation Product of Furazolidone Impurity 4 Using HRMS and NMR". J. Pharm. Biomed. Anal., 2024, 508, 6574-6582.