发明人罗永刚,赵玉洁,韩伟. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 110451626 A, 授权公告日 2025-01-17.
发明人杨光,沈红梅,何建平. "Method for the Synthesis of 1-(6-Nitro-2,3-dihydro-4H-benzo[b][1,4]oxazin-4-yl)ethan-1-one" [P]. 中国发明专利, 专利号 CN 115772628 B, 授权公告日 2022-11-21.
发明人黄志刚,张德明,刘建华. "A Process for Preparing High-Purity 1-(6-Nitro-2,3-dihydro-4H-benzo[b][1,4]oxazin-4-yl)ethan-1-one" [P]. 中国发明专利, 专利号 CN 117407029 B, 授权公告日 2023-02-09.
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