570-23-0
3-氨基水杨酸
+
98-88-4
苯甲酰氯
→
131862-24-3
2-phenyl-1,3-benzoxazole-7-carboxylic acid
136663-24-6
methyl 2-phenylbenzoxazole-7-carboxylate
17672-21-8
2-氨基-3-羟基苯甲酸甲酯
65-85-0
苯甲酸