发明人何建平,胡光,唐晓军. "Method for the Synthesis of 1-(4-Cyanophenyl)-3-phenylurea" [P]. 中国发明专利, 专利号 CN 108497655 B, 授权公告日 2018-06-13.
发明人郑宇鹏,孙丽萍,徐明华. "A Process for Preparing High-Purity 1-(4-Cyanophenyl)-3-phenylurea" [P]. 中国发明专利, 专利号 CN 109676838 B, 授权公告日 2019-09-15.
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