6214-64-8
4-甲基-2-羟基嘧啶-5-羧酸乙酯
→
~82%
188781-08-0
4-甲基-2-氯嘧啶-5-羧酸乙酯
17994-55-7
ethyl 6-methyl-2-oxo-3,4-dihydro-1H-pyrimidine-5-carboxylate
141-97-9
乙酰乙酸乙酯
6319-01-3
ethyl 2-[(carbamoylamino)methylidene]-3-oxobutanoate