Williams B T, Johnson M A, Chen K W. "一种西尼地平杂质8的合成方法" [P]. US Patent, US 10222798 B2, 2018-11-28.
Björnsson E, Jørgensen K, Schröder R. "Method for the Synthesis of Cilnidipine Impurity 8" [P]. European Patent, EP 3820184 A1, 2017-02-05.
Johnson M A, Thompson G K, Brown S R. "A Process for Preparing High-Purity Cilnidipine Impurity 8" [P]. US Patent, US 11428880 B2, 2021-11-15.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of 西尼地平杂质8 in Pharmaceutical Formulations". Environ. Sci. Technol., 2024, 1198, (7), 4065-4073.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of 西尼地平杂质8 as an Impurity". Rapid Commun. Mass Spectrom., 2011, 891, (3), 917-924.
Brown R C, Davis S M. "Identification and Structural Characterization of a Novel Degradation Product of Cilnidipine Impurity 8 Using HRMS and NMR". Sci. Total Environ., 2021, 1703, (6), 9501-9509.
Garcia M, Rodriguez P. "Forced Degradation Studies to Evaluate 西尼地平杂质8 Profile in Drug Substances According to ICH Guidelines". J. Chromatogr. A, 2021, 1030, (5), 1946-1950.