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发明人刘建华,徐明华,黄志刚. "A Process for Preparing High-Purity 1-Ethyl-2-methyl-1,3-benzodiazole-5-carbonitrile" [P]. 中国发明专利, 专利号 CN 114746586 A, 授权公告日 2018-03-24.
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