• CAS:85531-49-3

  4,4'-bipyridine-2,2'-dicarboxylic acid

• CAS:115091-29-7

  4,4',4''-Tri-Tert-Butyl-2,2':6',2''-Terpyridine

• CAS:1868146-04-6

  1,​3-​Benzenedicarboxylic acid, 5-​[2,​6-​bis(4-​carboxyphenyl)​-​4-​pyridinyl]​-

• CAS:331432-79-2

  4,4'-(1-cyclopentene-1,2-diyl)bis[5-methyl-2-thiophenecarboxylic acid

• CAS:129485-58-1

  Pyridine, 4,​4'-​(1H-​pyrazole-​3,​5-​diyl)​bis-

• CAS:129485-83-2

  2,​2'-​(1H-​pyrazole-​3,​5-​diyl)​bis-Pyridine

• CAS:960302-57-2

  1H-​Imidazole-​5-​carboxaldehyde, 2-​(1H-​imidazol-​5-​ylmethylene)​hydrazone

• CAS:1025042-44-7

  2-(pyridin-3-yl)-1H-imidazole-4,5-dicarboxylic acid

• CAS:29003-05-2

  Benzoic acid, 2-(1H-benzimidazol-1-yl)-

• CAS:180724-02-1

  Pyridine, 4,​4'-​(1-​methyl-​1H-​pyrrole-​2,​5-​diyl)​bis-