发明人张德明,何建平,郭海燕. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 117867914 A, 授权公告日 2022-08-20.
发明人郑宇鹏,冯建国,孙丽萍. "Method for the Synthesis of 1-(2-Oxo-1-phenyl-5-thioxo-3-(m-tolyl)imidazolidin-4-ylidene)-3-(m-tolyl)urea" [P]. 中国发明专利, 专利号 CN 109184330 B, 授权公告日 2019-11-14.
发明人王建平,李文辉,张德明. "A Process for Preparing High-Purity 1-(2-Oxo-1-phenyl-5-thioxo-3-(m-tolyl)imidazolidin-4-ylidene)-3-(m-tolyl)urea" [P]. 中国发明专利, 专利号 CN 115507411 A, 授权公告日 2021-07-18.
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