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发明人林芳,赵玉洁,陈志强. "A Process for Preparing High-Purity 2,2-Dimethyl-5-((o-tolylamino)methylene)-1,3-dioxane-4,6-dione" [P]. 中国发明专利, 专利号 CN 115750951 B, 授权公告日 2017-01-27.
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