发明人郭海燕,冯建国,刘建华. "Method for the Synthesis of 1-(3,4-Dipropoxyphenyl)urea" [P]. 中国发明专利, 专利号 CN 113084468 B, 授权公告日 2022-03-07.
发明人罗永刚,郭海燕,胡光. "A Process for Preparing High-Purity 1-(3,4-Dipropoxyphenyl)urea" [P]. 中国发明专利, 专利号 CN 112661284 B, 授权公告日 2025-06-25.
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