发明人朱建伟,刘建华,杨光. "Method for the Synthesis of 5-Chlorosulfonyl-3-methyl-thiophene-2,4-dicarboxylic acid dimethyl ester" [P]. 中国发明专利, 专利号 CN 117277592 B, 授权公告日 2016-12-25.
发明人马晓峰,钱学锋,何建平. "A Process for Preparing High-Purity 5-Chlorosulfonyl-3-methyl-thiophene-2,4-dicarboxylic acid dimethyl ester" [P]. 中国发明专利, 专利号 CN 112052882 B, 授权公告日 2021-12-26.
参考文献 Literature
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