发明人张德明,黄志刚,林芳. "Method for the Synthesis of 5-Ethyl-4-[1-(4-methylbenzenesulfonyl)ethyl]-1-(4-methylphenyl)-2,3-dihydro-1H-imidazol-2-one" [P]. 中国发明专利, 专利号 CN 111796741 A, 授权公告日 2024-04-26.
发明人胡光,王建平,周伟. "A Process for Preparing High-Purity 5-Ethyl-4-[1-(4-methylbenzenesulfonyl)ethyl]-1-(4-methylphenyl)-2,3-dihydro-1H-imidazol-2-one" [P]. 中国发明专利, 专利号 CN 113875178 A, 授权公告日 2023-04-22.
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