Chen K W, Patel M V, Williams B T. "Method for the Synthesis of 1,3,4,6-Tetrachlorotetrahydroimidazo[4,5-d]imidazole-2,5(1H,3H)-dione" [P]. US Patent, US 10465615 B2, 2025-07-18.
发明人赵玉洁,李文辉,马晓峰. "A Process for Preparing High-Purity 1,3,4,6-Tetrachlorotetrahydroimidazo[4,5-d]imidazole-2,5(1H,3H)-dione" [P]. 中国发明专利, 专利号 CN 109878614 B, 授权公告日 2017-04-12.
参考文献 Literature
Jensen P, Larsen A M, Olsen K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chemosphere, 2014, 263, 4272-4290.
Hughes D, Roberts J, Thomas A. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Phytochemistry, 2012, 648, 5754-5772.
Kumar A, Sharma P, Patel R S. "Identification and Structural Characterization of a Novel Degradation Product of 1,3,4,6-Tetrachlorotetrahydroimidazo[4,5-d]imidazole-2,5(1H,3H)-dione Using HRMS and NMR". Molecules, 2014, 1882, (10), 7893-7902.
Jensen P, Larsen A M, Olsen K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Agric. Food Chem., 2012, 1340, 3031-3060.