发明人冯建国,林芳,张德明. "Method for the Synthesis of Methyl 5-methyl-3-ureidothiophene-2-carboxylate" [P]. 中国发明专利, 专利号 CN 116075779 B, 授权公告日 2023-11-01.
发明人胡光,马晓峰,沈红梅. "A Process for Preparing High-Purity Methyl 5-methyl-3-ureidothiophene-2-carboxylate" [P]. 中国发明专利, 专利号 CN 114764440 B, 授权公告日 2024-04-14.
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