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发明人郑宇鹏,杨光,高志强. "Method for the Synthesis of 8-Bromo-6-methoxy-2H-benzo[b][1,4]oxazin-3(4H)-one" [P]. 中国发明专利, 专利号 CN 113691181 B, 授权公告日 2017-05-13.
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