38875-53-5
2,3-二氨基-5-溴吡啶
+
530-62-1
N,N'-羰基二咪唑
→
~91%
148038-83-9
6-溴-1H-咪唑并[4,5-B]吡啶-2(3H)-酮
57-13-6
尿素
~36%
273-21-2
4-氮杂苯并咪唑
~24%
74124-79-1
N,N'-二琥珀酰亚胺基碳酸酯