Stevens L M, Mueller T, Roberts E F. "Method for the Synthesis of Citalopram Impurity 67" [P]. US Patent, US 9874050 B2, 2016-06-03.
Björnsson E, Mueller T C, Lefèvre J P. "A Process for Preparing High-Purity Citalopram Impurity 67" [P]. European Patent, EP 3243367 A1, 2025-05-12.
参考文献 Literature
Zhou X P, Huang L, Wu G. "Development and Validation of an LC-MS/MS Method for the Determination of 西酞普兰杂质67 in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2013, 1055, 1292-1320.
Kumar A, Sharma P, Patel R S. "A Stability-Indicating HPLC Method for the Separation and Quantification of 西酞普兰杂质67 as an Impurity". Anal. Chim. Acta, 2021, 2302, (1), 5727-5757.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of Citalopram Impurity 67 Using HRMS and NMR". Environ. Sci. Technol., 2016, 922, 720-736.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate 西酞普兰杂质67 Profile in Drug Substances According to ICH Guidelines". Chromatographia, 2019, 692, (12), 1839-1865.