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发明人马晓峰,何建平,刘建华. "Method for the Synthesis of 7-Bromo-3-ethyl-1H-pyrido[2,3-b][1,4]oxazin-2(3H)-one" [P]. 中国发明专利, 专利号 CN 112775963 B, 授权公告日 2025-05-11.
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