• CAS:14900-61-9

  4,4'-(azanediylbis(methylene))dibenzoic acid

• CAS:10602-02-5

  4-(carboxyethynyl)benzoic acid

• CAS:2361294-28-0

  4,4'-(phenazine-5,10-diyl)dibenzoic acid

• CAS:1337527-84-0

  4,4'-Bipyridinium, 1,1'-bis(3-carboxyphenyl)-, chloride (1:2)

• CAS:2172939-31-8

  4,4'-((9H-Fluoren-9-ylidene)methylene)dibenzoic acid

• CAS:3753-81-9

  Benzoic acid, 4,4'-[1,3-propanediylbis(oxy)]bis-

• CAS:64189-98-6

  Ruthenium, bis(2,2'-bipyridine-κN1,κN1')[[2,2'-bipyridine]-4,4'-dicarboxylato(2-)-κN1,κN1']-, (OC-6-22)-, compd. with hydrogen hexafluorophosphate(1-)

• CAS:866113-94-2

  4,4'-BIPYRIDINIUM, 1,1'-BIS[(4-CARBOXYPHENYL)METHYL]-, DICHLORIDE

• CAS:1451254-94-6

  4-carboxy-1-(4-carboxybenzyl)pyridin-1-ium bromide

• CAS:

  9,9'-Spirobifluorene-2,7-dicarboxylic acid