623-76-7
1,3-二乙基脲
+
18522-92-4
NaHNSO2(4-MeC6H4)
→
~72%
1467-23-8
1-ethyl-3-(4-methylphenyl)sulfonylurea
75-04-7
乙胺
70-55-3
对甲苯磺酰胺
109-90-0
异氰酸乙酯
~71%