发明人王建平,冯建国,唐晓军. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 112228250 A, 授权公告日 2021-01-14.
发明人高志强,沈红梅,何建平. "Method for the Synthesis of Ethyl 4-methyl-3-ureidothiophene-2-carboxylate" [P]. 中国发明专利, 专利号 CN 111734951 B, 授权公告日 2020-09-25.
发明人唐晓军,胡光,李文辉. "A Process for Preparing High-Purity Ethyl 4-methyl-3-ureidothiophene-2-carboxylate" [P]. 中国发明专利, 专利号 CN 109608585 A, 授权公告日 2020-04-15.
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