57-44-3
5,5-二乙基丙二酰脲
+
110-53-2
溴代正戊烷
→
15517-31-4
5,5-diethyl-1-pentyl-1,3-diazinane-2,4,6-trione
38869-91-9
pentylurea
77-25-8
二乙基丙二酸二乙酯