发明人刘建华,罗永刚,朱建伟. "Method for the Synthesis of 2-[3-(chlorosulfonyl)-4,5-dimethoxyphenyl]acetic acid" [P]. 中国发明专利, 专利号 CN 109076360 B, 授权公告日 2020-11-20.
发明人刘建华,朱建伟,李文辉. "A Process for Preparing High-Purity 2-[3-(chlorosulfonyl)-4,5-dimethoxyphenyl]acetic acid" [P]. 中国发明专利, 专利号 CN 117399939 A, 授权公告日 2020-05-03.
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