541-41-3
氯甲酸乙酯
+
123-30-8
4-氨基苯酚
→
~97%
54734-40-6
[4-(ethoxycarbonylamino)phenyl] ethyl carbonate
1609-47-8
焦碳酸二乙酯
7159-95-7
ethyl N-(4-hydroxyphenyl)carbamate