• CAS:4282-29-5

  3,4-Thiophenedicarboxylic acid

• CAS:3387-26-6

  3,4-Furandicarboxylic acid

• CAS:65697-90-7

  4,4'-(1H-1,2,4-triazole-3,5-diyl)bis-Benzoic acid

• CAS:923057-85-6

  4-amino-3,5-bis(3-carboxyphenyl)-4H-1,2,4-triazole

• CAS:1815596-32-7

  4,4'-(4-amino-4H-1,2,4-triazole-3,5-diyl)dibenzoic acid

• CAS:3112-31-0

  1H-Pyrazole-3,5-dicarboxylic acid

• CAS:1414629-40-5

  1,​3-​bis(4-​carboxyphenyl)​imidazolium

• CAS:1258419-79-2

  4,4'-(9H-carbazole-3,6-diyl)dibenzoic acid

• CAS:56842-95-6

  Bicyclo[1.1.1]Pentane-1,3-Dicarboxylic Acid

• CAS:4056-78-4

  Norcamphoric Acid