Johansson L, Kowalski A, Nielsen H. "一种的合成方法" [P]. European Patent, EP 3565400 A1, 2022-09-22.
Park J H, Brown S R, Fischer A B. "Method for the Synthesis of N-(4-((4-(Diethylamino)phenyl)(phenyl)methylene)cyclohexa-2,5-dien-1-ylidene)-N-ethylethanaminium succinate" [P]. US Patent, US 9669263 B2, 2023-08-12.
发明人张德明,王建平,郭海燕. "A Process for Preparing High-Purity N-(4-((4-(Diethylamino)phenyl)(phenyl)methylene)cyclohexa-2,5-dien-1-ylidene)-N-ethylethanaminium succinate" [P]. 中国发明专利, 专利号 CN 108767091 A, 授权公告日 2025-01-18.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Sep. Sci., 2012, 323, (9), 6632-6640.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chim. Acta, 2016, 1914, (9), 7365-7383.