发明人唐晓军,陈志强,张德明. "Method for the Synthesis of Chlortalidone EP Impurity A" [P]. 中国发明专利, 专利号 CN 109620613 B, 授权公告日 2018-09-05.
Mueller T C, Kowalski A, Björnsson E. "A Process for Preparing High-Purity Chlortalidone EP Impurity A" [P]. European Patent, EP 3463299 A1, 2016-02-21.
参考文献 Literature
Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of 氯噻酮EP杂质A in Pharmaceutical Formulations". Phytochemistry, 2016, 939, 7442-7445.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of 氯噻酮EP杂质A as an Impurity". J. Sep. Sci., 2018, 306, 836-851.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of Chlortalidone EP Impurity A Using HRMS and NMR". Sci. Total Environ., 2020, 2078, (9), 4985-5012.
Fischer P, Wagner E. "Forced Degradation Studies to Evaluate 氯噻酮EP杂质A Profile in Drug Substances According to ICH Guidelines". Talanta, 2020, 1685, (12), 798-809.