539-92-4
碳酸二异丁酯
+
95-80-7
2,4-二氨基甲苯
→
~95%
71412-40-3
2-methylpropyl N-[2-methyl-5-(2-methylpropoxycarbonylamino)phenyl]carbamate
78-83-1
异丁醇
584-84-9
甲苯二异氰酸酯