发明人马晓峰,林芳,胡光. "Method for the Synthesis of 8-Ethyl-2H-benzo[b][1,4]oxazin-3(4H)-one" [P]. 中国发明专利, 专利号 CN 117294236 A, 授权公告日 2018-09-15.
发明人沈红梅,朱建伟,郑宇鹏. "A Process for Preparing High-Purity 8-Ethyl-2H-benzo[b][1,4]oxazin-3(4H)-one" [P]. 中国发明专利, 专利号 CN 117741441 B, 授权公告日 2025-11-06.
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