2,6-Naphthalenedicarboxylicacid
4,4'-(9-Oxo-9H-fluorene-2,7-diyl)bis[benzoic acid]
[2,2'-Binaphthalene]-6,6'-dicarboxylic acid
![4,4'-(9-Oxo-9H-fluorene-2,7-diyl)bis[benzoic acid]](http://m.chemsoon.com//upload/0201/7e4be677be2107a56d8c07874ec8da3c.png)
![[2,2'-Binaphthalene]-6,6'-dicarboxylic acid](http://m.chemsoon.com//upload/0201/6bb5414440f762b6c1f202b788eae750.png)