发明人冯建国,周伟,赵玉洁. "Method for the Synthesis of 6-Methyl-4-(2-oxo-2-(pyrrolidin-1-yl)ethyl)-2H-benzo[b][1,4]oxazin-3(4H)-one" [P]. 中国发明专利, 专利号 CN 114280421 B, 授权公告日 2016-12-24.
发明人张德明,王建平,孙丽萍. "A Process for Preparing High-Purity 6-Methyl-4-(2-oxo-2-(pyrrolidin-1-yl)ethyl)-2H-benzo[b][1,4]oxazin-3(4H)-one" [P]. 中国发明专利, 专利号 CN 116299934 B, 授权公告日 2018-04-03.
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