发明人徐明华,韩伟,王建平. "Method for the Synthesis of Methyl 2-amino-4-(p-tolyl)thiophene-3-carboxylate" [P]. 中国发明专利, 专利号 CN 112453163 A, 授权公告日 2022-02-06.
发明人孙丽萍,唐晓军,沈红梅. "A Process for Preparing High-Purity Methyl 2-amino-4-(p-tolyl)thiophene-3-carboxylate" [P]. 中国发明专利, 专利号 CN 116800450 A, 授权公告日 2022-02-03.
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