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发明人郭海燕,孙丽萍,王建平. "A Process for Preparing High-Purity 2-(3-Bromophenyl)-4H-benzo[d][1,3]oxazin-4-one" [P]. 中国发明专利, 专利号 CN 117202229 B, 授权公告日 2022-09-06.
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