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发明人韩伟,沈红梅,杨光. "A Process for Preparing High-Purity 1-(2-((3-Chloro-5-(trifluoromethyl)pyridin-2-yl)amino)ethyl)-3-(4-chlorophenyl)urea" [P]. 中国发明专利, 专利号 CN 117660345 B, 授权公告日 2015-06-16.
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