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发明人杨光,黄志刚,周伟. "A Process for Preparing High-Purity 2-Chloro-n-(7-nitro-3-oxo-3,4-dihydro-2h-1,4-benzoxazin-6-yl)acetamide" [P]. 中国发明专利, 专利号 CN 111737816 B, 授权公告日 2017-04-17.
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