发明人冯建国,何建平,徐明华. "一种1-chloro-3-(chloromethyl)pyrido[1,2-a]benzimidazole-4-carbonitrile的合成方法" [P]. 中国发明专利, 专利号 CN 114177312 A, 授权公告日 2020-01-17.
发明人刘建华,唐晓军,徐明华. "Method for the Synthesis of 1-chloro-3-(chloromethyl)pyrido[1,2-a]benzimidazole-4-carbonitrile" [P]. 中国发明专利, 专利号 CN 112869415 A, 授权公告日 2017-09-28.
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