发明人罗永刚,高志强,张德明. "Method for the Synthesis of Ethyl 3-((4-oxo-3-phenyl-4H-pyrazino[1,2-a]pyrimidin-2-yl)oxy)propanoate" [P]. 中国发明专利, 专利号 CN 113139673 B, 授权公告日 2020-07-20.
发明人钱学锋,赵玉洁,胡光. "A Process for Preparing High-Purity Ethyl 3-((4-oxo-3-phenyl-4H-pyrazino[1,2-a]pyrimidin-2-yl)oxy)propanoate" [P]. 中国发明专利, 专利号 CN 117951590 B, 授权公告日 2023-04-05.
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