发明人林芳,黄志刚,杨光. "Method for the Synthesis of 1-(4-Chloro-phenyl)-3-(6-chloro-4-trifluoromethyl-pyridin-2-yl)-urea" [P]. 中国发明专利, 专利号 CN 116444440 A, 授权公告日 2019-09-01.
发明人黄志刚,罗永刚,胡光. "A Process for Preparing High-Purity 1-(4-Chloro-phenyl)-3-(6-chloro-4-trifluoromethyl-pyridin-2-yl)-urea" [P]. 中国发明专利, 专利号 CN 110707625 B, 授权公告日 2016-03-03.
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