• CAS:1638156-89-4

  4-nitro-2,6-Naphthalenedicarboxylic acid

• CAS:142168-25-0

  5,​10-​bis(4-​carboxyphenyl)​-​15,​20-​diphenylporphyrin

• CAS:

  (E)-4,4'-(diazene-1,2-diyl)bis(2-fluorobenzoic acid)

• CAS:7315-96-0

  1,5-Naphthalenedicarboxylic acid

• CAS:3215-41-6

  9H-Carbazole-3,6-dicarboxylicacid

• 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:2379694-79-6

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