Triviální názvy, skupina heterocyklus
| Triviální název | Systematický Název | Struktura |
| 2-pyran | 2H-oxin |  |
| 4-pyran | 4H-oxin |  |
| adenin | 6-aminopurin |  |
| chinolin | chinolin |  |
| cytosin | 4-aminopyrimidin-2-ol |  |
| furan | oxol |  |
| guanin | 2-aminopurin-6-ol |  |
| histidin | 2-amino-3-(3-H-imidazol-4-yl)propanová kyselina |  |
| imidazol | 1,3-diazol |  |
| indol | benzo[b]pyrrol |  |
| isochinolin | benzo[c]pyridin |  |
| prolin | pyrrolidin-2-karboxylová kyselina |  |
| purin | purin |  |
| pyrazol | 1,2-diazol |  |
| pyridin | azin |  |
| pyrimidin | 1,3-diazin |  |
| pyrrol | azol |  |
| thiazol | 1,3-thiazol |  |
| thiofen | thiol |  |
| thymin | 5-methylpyrimidin-2,4-diol |  |
| tryptofan | 2-Amino-3-(1H-indol-3-yl)-propanová kyselina |  |
| uracil | pyrimidin-2,4-dion |  |
