发明人徐明华,赵玉洁,陈志强. "Method for the Synthesis of (2E,2'E)-4,4'-(1,2-phenylenebis(azanediyl))bis(4-oxobut-2-enoic acid)" [P]. 中国发明专利, 专利号 CN 114938736 B, 授权公告日 2024-04-09.
发明人杨光,周伟,罗永刚. "A Process for Preparing High-Purity (2E,2'E)-4,4'-(1,2-phenylenebis(azanediyl))bis(4-oxobut-2-enoic acid)" [P]. 中国发明专利, 专利号 CN 109606125 B, 授权公告日 2022-09-08.
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