105-54-4
丁酸乙酯
+
109-94-4
甲酸乙酯
→
~27%
62142-16-9
ethyl 2-(hydroxymethylidene)butanoate
34171-37-4
5-乙基-2-硫脲嘧啶
30150-54-0
4(3H)-Pyrimidinone, 5-ethyl-2-(methylthio)-