62530-49-8
2-(3-CARBOXYPROP-2-ENOYLAMINO)BENZOIC ACID
→
~78%
6957-51-3
2-(2,5-dioxopyrrol-1-yl)benzoic acid
108-31-6
马来酸酐
+
118-92-3
邻氨基苯甲酸
~43%