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发明人郭海燕,林芳,唐晓军. "A Process for Preparing High-Purity 6-(Aminomethyl)-4-methyl-2H-benzo[b][1,4]oxazin-3(4H)-one" [P]. 中国发明专利, 专利号 CN 116925892 A, 授权公告日 2017-10-18.
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