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发明人何建平,胡光,王建平. "A Process for Preparing High-Purity 5,5-Diethyl-2,6-dioxohexahydropyrimidine-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 117071642 B, 授权公告日 2021-06-26.
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