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发明人沈红梅,杨光,张德明. "Method for the Synthesis of 2,2-Dimethyl-6-nitro-2H-benzo[e][1,3]oxazin-4(3H)-one" [P]. 中国发明专利, 专利号 CN 116046375 B, 授权公告日 2021-12-12.
发明人徐明华,马晓峰,孙丽萍. "A Process for Preparing High-Purity 2,2-Dimethyl-6-nitro-2H-benzo[e][1,3]oxazin-4(3H)-one" [P]. 中国发明专利, 专利号 CN 114807538 B, 授权公告日 2024-05-07.
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