18592-13-7
6-(氯甲基)脲嘧啶
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31777-62-5
N-((1,2,3,6-四氢-2,6-二氧代嘧啶-4-基)甲基)乙酰胺
94694-50-5
5,7-dichloro-3-methylimidazo[1,5-c]pyrimidine