• CAS:2501970-66-5

  2,2′-biselenophene-5,5′-dicarboxylic acid

• CAS:2149574-29-6

  1,1'-(1,4-phenylenebis(methylene))bis(4-carboxypyridin-1-ium)

• CAS:2105860-95-3

  Benzoic acid, 4,​4'-​[[(4-​sulfophenyl)​imino]​bis(methylene)​]​bis-

• CAS:188935-31-1

  1,3,4-Thiadiazole-2,5-dicarboxylic acid

• CAS:

  3,3'-(((4-sulfophenyl)azanediyl)bis(methylene))dibenzoic acid

• CAS:2379694-79-6

  1,10-phenanthroline-3,8-dicarboxylic acid

• CAS:13282-09-2

  4,4′-[1,4-Phenylenebis(oxy)]bis[benzoic acid]

• CAS:303180-11-2

  1H-Pyrazole-3,5-dicarboxylic acid hydrate

• CAS:1373929-42-0

  4,4'-(1,2-diazenediyl)bis[2-methyl-Benzoic acid

• CAS:2079886-11-4

  4-(9H-carbazol-9-yl)pyridine-2,6-dicarboxylic acid