发明人钱学锋,周伟,徐明华. "Method for the Synthesis of N-Nitroso Loperamide EP Impurity C" [P]. 中国发明专利, 专利号 CN 109457528 A, 授权公告日 2021-03-19.
发明人陈志强,马晓峰,罗永刚. "A Process for Preparing High-Purity N-Nitroso Loperamide EP Impurity C" [P]. 中国发明专利, 专利号 CN 112431319 A, 授权公告日 2023-12-11.
参考文献 Literature
Yamamoto K, Tanaka H, Suzuki T. "Development and Validation of an LC-MS/MS Method for the Determination of N-亚硝基洛哌丁胺EP杂质C in Pharmaceutical Formulations". Chemosphere, 2018, 1919, 5463-5473.
Kim S H, Park J Y. "A Stability-Indicating HPLC Method for the Separation and Quantification of N-亚硝基洛哌丁胺EP杂质C as an Impurity". Rapid Commun. Mass Spectrom., 2021, 2069, 8219-8222.
Zhang Y, Li Q, Chen T. "Identification and Structural Characterization of a Novel Degradation Product of N-Nitroso Loperamide EP Impurity C Using HRMS and NMR". J. Sep. Sci., 2019, 2260, 5176-5190.
Kumar A, Sharma P, Patel R S. "Forced Degradation Studies to Evaluate N-亚硝基洛哌丁胺EP杂质C Profile in Drug Substances According to ICH Guidelines". Phytochemistry, 2014, 657, 2280-2290.