4-叠氮基水杨酸 N-羟基琥珀酰亚胺酯

4-叠氮水杨酸

4-[(2-chloro-2-phenylacetyl)amino]-2-hydroxybenzoic acid

2-hydroxy-4-(phenylmethoxycarbonylamino)benzoic acid

2-hydroxy-4-[(2,2,2-trichloroacetyl)amino]benzoic acid