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发明人孙丽萍,黄志刚,钱学锋. "Method for the Synthesis of 1-(4-Chlorophenyl)-3-(5-ethyl-1,3,4-thiadiazol-2-yl)urea" [P]. 中国发明专利, 专利号 CN 111393255 A, 授权公告日 2020-02-20.
发明人郑宇鹏,李文辉,郭海燕. "A Process for Preparing High-Purity 1-(4-Chlorophenyl)-3-(5-ethyl-1,3,4-thiadiazol-2-yl)urea" [P]. 中国发明专利, 专利号 CN 115200734 A, 授权公告日 2022-09-17.
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