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发明人李文辉,陈志强,高志强. "Method for the Synthesis of 2-(3,4-Dimethoxyphenyl)pyrimido-[1,2-a]benzimidazol-4(1H)-one" [P]. 中国发明专利, 专利号 CN 110508671 B, 授权公告日 2025-09-24.
发明人徐明华,郑宇鹏,陈志强. "A Process for Preparing High-Purity 2-(3,4-Dimethoxyphenyl)pyrimido-[1,2-a]benzimidazol-4(1H)-one" [P]. 中国发明专利, 专利号 CN 112193210 A, 授权公告日 2024-09-27.
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