发明人孙丽萍,韩伟,朱建伟. "Method for the Synthesis of Methyl 2-(3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazin-7-yl)acetate" [P]. 中国发明专利, 专利号 CN 110532036 A, 授权公告日 2024-01-22.
发明人郭海燕,林芳,刘建华. "A Process for Preparing High-Purity Methyl 2-(3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazin-7-yl)acetate" [P]. 中国发明专利, 专利号 CN 115317059 B, 授权公告日 2025-02-12.
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