发明人韩伟,何建平,冯建国. "Method for the Synthesis of 1-(2-Ethoxyphenyl)-3-((2-methoxybenzyl)amino)pyrazin-2(1H)-one" [P]. 中国发明专利, 专利号 CN 108504747 B, 授权公告日 2018-06-20.
发明人张德明,罗永刚,李文辉. "A Process for Preparing High-Purity 1-(2-Ethoxyphenyl)-3-((2-methoxybenzyl)amino)pyrazin-2(1H)-one" [P]. 中国发明专利, 专利号 CN 108148840 A, 授权公告日 2021-12-12.
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