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发明人罗永刚,朱建伟,赵玉洁. "Method for the Synthesis of 1-[(1-Ethylpyrrolidin-2-yl)methyl]-3-methylurea" [P]. 中国发明专利, 专利号 CN 115693718 A, 授权公告日 2020-04-22.
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