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发明人赵玉洁,钱学锋,郑宇鹏. "A Process for Preparing High-Purity 3-(3,6-Dioxo-3,6-dihydropyridazin-1(2H)-yl)propanenitrile" [P]. 中国发明专利, 专利号 CN 110728566 B, 授权公告日 2020-03-20.
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