发明人孙丽萍,何建平,郭海燕. "Method for the Synthesis of 1-Hydroxy-3,4-dimethoxy-1H-pyrrole-2,5-dione" [P]. 中国发明专利, 专利号 CN 108633119 A, 授权公告日 2016-04-22.
发明人郭海燕,郑宇鹏,周伟. "A Process for Preparing High-Purity 1-Hydroxy-3,4-dimethoxy-1H-pyrrole-2,5-dione" [P]. 中国发明专利, 专利号 CN 116143206 B, 授权公告日 2023-03-19.
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