Schröder R, Kumar R, Thompson G K. "一种佐匹克隆杂质26的合成方法" [P]. US Patent, US 9587156 B2, 2016-01-12.
Kowalski A, Martínez F, Schröder R. "Method for the Synthesis of Eszopiclone Impurity 26" [P]. European Patent, EP 3298994 A1, 2018-11-26.
Jørgensen K, Mueller T C, Sørensen M. "A Process for Preparing High-Purity Eszopiclone Impurity 26" [P]. European Patent, EP 3346077 A1, 2020-04-25.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of 佐匹克隆杂质26 in Pharmaceutical Formulations". J. Chromatogr. A, 2018, 2223, (5), 2500-2511.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of 佐匹克隆杂质26 as an Impurity". Environ. Sci. Technol., 2010, 1844, (1), 1631-1658.
Hughes D, Roberts J, Thomas A. "Identification and Structural Characterization of a Novel Degradation Product of Eszopiclone Impurity 26 Using HRMS and NMR". Anal. Chem., 2018, 2168, (1), 6454-6462.
Smith J A, Johnson M B. "Forced Degradation Studies to Evaluate 佐匹克隆杂质26 Profile in Drug Substances According to ICH Guidelines". Sci. Total Environ., 2013, 2208, (6), 9352-9382.