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发明人王建平,马晓峰,赵玉洁. "Method for the Synthesis of 1-[3-(2-Dimethylamino-5-trifluoromethyl-pyridin-3-yl)-phenyl]-3-ethyl-urea" [P]. 中国发明专利, 专利号 CN 109447127 A, 授权公告日 2016-11-10.
发明人李文辉,冯建国,高志强. "A Process for Preparing High-Purity 1-[3-(2-Dimethylamino-5-trifluoromethyl-pyridin-3-yl)-phenyl]-3-ethyl-urea" [P]. 中国发明专利, 专利号 CN 111661091 A, 授权公告日 2018-04-13.
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