615-16-7
2-羟基苯并咪唑
+
161468-57-1
diethyl 2-oxobenzimidazole-1,3-dicarboxylate
→
~99%
41120-23-4
ethyl 2-oxo-3H-benzimidazole-1-carboxylate
7325-39-5
ethyl pyridine-2-yl carbonate
~94%