Mueller T C, Martínez F, Johansson L. "Method for the Synthesis of 2,4-dimethylpyrimido[2,1-a]phthalazin-5-ium-7-amine;chloride" [P]. European Patent, EP 3617664 A1, 2022-09-16.
发明人李文辉,何建平,马晓峰. "A Process for Preparing High-Purity 2,4-dimethylpyrimido[2,1-a]phthalazin-5-ium-7-amine;chloride" [P]. 中国发明专利, 专利号 CN 116880869 A, 授权公告日 2019-07-19.
参考文献 Literature
Mueller T, Schmidt R K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2016, 133, (5), 6031-6044.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Food Chem., 2015, 2240, (4), 1830-1838.
Wang L, Li J, Zhang H. "Identification and Structural Characterization of a Novel Degradation Product of 2,4-dimethylpyrimido[2,1-a]phthalazin-5-ium-7-amine;chloride Using HRMS and NMR". Environ. Sci. Technol., 2017, 441, (9), 1876-1896.