- Heterocyclic Compounds
- Heterocyclic compounds, Nitrogen-containing
- 2-Aminopyridine
- Benzimidazole
- 2,2-Bipyridine
- Carbazole
- Cyanuric acid
- 3,5-Dimethylpyrazole
- 8-Hydroxyquinoline
- Imidazole
- Isoquinoline
- 2,4-Lutidine
- 2,6-Lutidine
- Melamine
- 2-Methylpyrazine
- 1,10-Phenanthroline
- 2-Picoline
- 3-Picoline
- 4-Picoline
- Pyridine
- Quinoline
- 2,4,6-Trimethylpyridine
- Heterocyclic compounds, Nitrogen-Oxygen-containing
- Heterocyclic compounds, Nitrogen-Sulfur-containing
- 2-Aminothiazole
- Benzothiazole
- 2-Benzothiazolol
- 2,2-Dithiobis(benzothiazole)
- 2-Imidazolidinethione
- 2-Mercaptobenzothiazole
- 2-Methylbenzothiazole
- Phenothiazine
- Heterocyclic compounds, Oxygen-Sulfur-containing
- Heterocyclic compounds, Sulfur-containing
- 2,5-Dibromothiophene
- Tetrahydrothiophene
- Thiophene
- 1,3,5-Trithiane symetrical