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Certified Reference Standards...
化学名称: N-(6-amino-1,3-dimethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-5-yl)formamide
异名: Caffeine EP Impurity B
微笑: O=CNC(C(N(C)C1=O)=O)=C(N1C)N
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