发明人罗永刚,陈志强,郭海燕. "Method for the Synthesis of 4,4'-(Propane-1,3-diylbis(azanediyl))bis(4-oxobut-2-enoic acid)" [P]. 中国发明专利, 专利号 CN 109465086 A, 授权公告日 2016-03-04.
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