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发明人赵玉洁,李文辉,韩伟. "A Process for Preparing High-Purity 4-(5-((2-((3-(1H-Imidazol-1-yl)propyl)amino)-7-methyl-4-oxo-4H-pyrido[1,2-a]pyrimidin-3-yl)methylene)-4-oxo-2-thioxothiazolidin-3-yl)butanoic acid" [P]. 中国发明专利, 专利号 CN 108548657 A, 授权公告日 2019-09-06.
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