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发明人郑宇鹏,赵玉洁,陈志强. "Method for the Synthesis of 2,5-Dihydro-2,5-dioxo-β-sulfo-1H-pyrrole-1-butanoic Acid 1-(2,5-Dioxo-1-pyrrolidinyl) Ester" [P]. 中国发明专利, 专利号 CN 110273193 B, 授权公告日 2021-11-20.
发明人罗永刚,朱建伟,唐晓军. "A Process for Preparing High-Purity 2,5-Dihydro-2,5-dioxo-β-sulfo-1H-pyrrole-1-butanoic Acid 1-(2,5-Dioxo-1-pyrrolidinyl) Ester" [P]. 中国发明专利, 专利号 CN 108059473 B, 授权公告日 2022-02-13.
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