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发明人孙丽萍,王建平,徐明华. "A Process for Preparing High-Purity N,N-Diethyl-1-methyl-5-(methylamino)-1H-imidazole-4-carboximidamide" [P]. 中国发明专利, 专利号 CN 109828716 B, 授权公告日 2023-05-04.
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