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发明人韩伟,赵玉洁,陈志强. "A Process for Preparing High-Purity 1-Methyl-1-(4-methylquinazolin-2-yl)guanidine" [P]. 中国发明专利, 专利号 CN 117589740 B, 授权公告日 2015-01-24.
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