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发明人郭海燕,唐晓军,杨光. "A Process for Preparing High-Purity N-1-Benzyl-N-1-ethyl-2-(trifluoromethyl)-1,4-benzenediamine" [P]. 中国发明专利, 专利号 CN 109551611 B, 授权公告日 2020-04-22.
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