发明人罗永刚,胡光,黄志刚. "Method for the Synthesis of Ethyl 3-(Butylthio)-4-oxo-4,5,6,7-tetrahydrobenzo[c]thiophene-1-carboxylate" [P]. 中国发明专利, 专利号 CN 116239677 A, 授权公告日 2017-02-20.
发明人韩伟,陈志强,王建平. "A Process for Preparing High-Purity Ethyl 3-(Butylthio)-4-oxo-4,5,6,7-tetrahydrobenzo[c]thiophene-1-carboxylate" [P]. 中国发明专利, 专利号 CN 115270097 A, 授权公告日 2023-10-22.
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