72752-80-8
2-氧代-2,3-二氢-1,3-苯并噁唑-6-羧酸甲酯
→
~94%
54903-16-1
2-氧代-2,3-二氢-1,3-苯并噁唑-6-羧酸
207552-92-9
ethyl 2-oxo-2,3-dihydrobenzo[d]oxazole-6-carboxylate
~79%
2374-03-0
4-氨基-3-羟基苯甲酸
861312-43-8
4-ethoxycarbonylamino-3-hydroxy-benzoic acid