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发明人马晓峰,胡光,罗永刚. "Method for the Synthesis of Methyl 5,6-Dimethoxybenzothiophene-2-carboxylate" [P]. 中国发明专利, 专利号 CN 112993815 A, 授权公告日 2022-06-18.
Nielsen H, Lefèvre J P, Martínez F. "A Process for Preparing High-Purity Methyl 5,6-Dimethoxybenzothiophene-2-carboxylate" [P]. European Patent, EP 3843442 A1, 2020-12-16.
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