发明人何建平,罗永刚,冯建国. "Method for the Synthesis of 4-(4-(Dimethylamino)phenyl)-2,2-dimethyl-4-oxobutanoic acid" [P]. 中国发明专利, 专利号 CN 115514467 A, 授权公告日 2015-04-18.
发明人孙丽萍,刘建华,赵玉洁. "A Process for Preparing High-Purity 4-(4-(Dimethylamino)phenyl)-2,2-dimethyl-4-oxobutanoic acid" [P]. 中国发明专利, 专利号 CN 113462194 B, 授权公告日 2022-07-08.
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