发明人杨光,王建平,高志强. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 109811942 A, 授权公告日 2021-09-05.
发明人钱学锋,刘建华,徐明华. "Method for the Synthesis of Ethyl 2-(3-bromopropanamido)-7-oxo-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate" [P]. 中国发明专利, 专利号 CN 110828534 A, 授权公告日 2023-04-21.
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