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发明人郭海燕,韩伟,沈红梅. "Method for the Synthesis of Methyl 2-(2,4-dioxo-2H-benzo[d][1,3]oxazin-1(4H)-yl)acetate" [P]. 中国发明专利, 专利号 CN 108135941 A, 授权公告日 2021-03-18.
发明人陈志强,冯建国,林芳. "A Process for Preparing High-Purity Methyl 2-(2,4-dioxo-2H-benzo[d][1,3]oxazin-1(4H)-yl)acetate" [P]. 中国发明专利, 专利号 CN 112254784 A, 授权公告日 2017-07-15.
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