109-94-4
甲酸乙酯
+
123-25-1
丁二酸二乙酯
→
14273-42-8
ethyl 2-(2-methyl-6-oxo-1H-pyrimidin-5-yl)acetate
124-42-5
盐酸乙脒
5472-38-8
甲酸基丁二酸二乙酯