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发明人孙丽萍,沈红梅,朱建伟. "A Process for Preparing High-Purity Ethyl 2-(6-methyl-3-oxo-3,4-dihydroquinoxalin-2-yl)acetate" [P]. 中国发明专利, 专利号 CN 108938777 B, 授权公告日 2018-04-10.
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