N,N'-p-phenylene-bis-succinamic acid

4-oxo-4-[(9-oxofluoren-2-yl)amino]butanoic acid

4-oxo-4-[4-(pyrimidin-2-ylsulfamoyl)anilino]butanoic acid

N-(4-溴苯基)丁二酰亚胺

4-[4-(2,4-difluorophenyl)phenyl]-4-oxobutanoic acid