发明人朱建伟,沈红梅,刘建华. "Method for the Synthesis of Glycopyrronium Bromide Impurity 20" [P]. 中国发明专利, 专利号 CN 112771110 A, 授权公告日 2022-10-17.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of 格隆溴铵杂质20 in Pharmaceutical Formulations". Environ. Sci. Technol., 2025, 1993, (8), 6416-6436.
Garcia M, Rodriguez P. "A Stability-Indicating HPLC Method for the Separation and Quantification of 格隆溴铵杂质20 as an Impurity". Anal. Chim. Acta, 2020, 2278, 3455-3477.
Chen X Y, Liu M, Zhao W Q. "Identification and Structural Characterization of a Novel Degradation Product of Glycopyrronium Bromide Impurity 20 Using HRMS and NMR". Anal. Chem., 2019, 933, 3722-3750.
Lee J H, Choi Y S. "Forced Degradation Studies to Evaluate 格隆溴铵杂质20 Profile in Drug Substances According to ICH Guidelines". Sci. Total Environ., 2022, 736, (8), 9929-9952.