5-Membered Heterocyclic Compounds [Chemical Structural Class]

Benzofurans [Chemical Structural Class] Furans (Disubstituted) [Chemical Structural Class] Furans (Monosubstituted) [Chemical Structural Class] Furans (Trisubstituted) [Chemical Structural Class] Isobenzofurans [Chemical Structural Class]

Benzimidazoles [Chemical Structural Class] Histidines [Chemical Structural Class] Imidazolium Salts [Chemical Structural Class] N-Substituted Imidazoles [Chemical Structural Class] N-Unsubstituted Imidazoles [Chemical Structural Class]

1,2,3-Oxadiazoles [Chemical Structural Class] 1,2,5-Oxadiazoles [Chemical Structural Class] 1,3,4-Oxadiazoles [Chemical Structural Class]

Condensed Cyclic Pyrazoles [Chemical Structural Class] Indazoles [Chemical Structural Class] N-Substituted Monocyclic Pyrazoles [Chemical Structural Class] N-Unsubstituted Monocyclic Pyrazoles [Chemical Structural Class]

Carbazoles [Chemical Structural Class] Carbolines [Chemical Structural Class] Indoles [Chemical Structural Class] Other Condensed Cyclic Pyrroles [Chemical Structural Class]

N-Substituted Pyrrolidines [Chemical Structural Class] Prolines [Chemical Structural Class] Pyrrolidinium Salts [Chemical Structural Class] Succinimides [Chemical Structural Class]

1,2,3-Thiadiazoles [Chemical Structural Class] 1,2,5-Thiadiazoles [Chemical Structural Class] 1,3,4-Thiadiazoles [Chemical Structural Class]

Benzothiazoles [Chemical Structural Class] Thiazoles (Monocyclic) [Chemical Structural Class] Thiazoles (Other Condensed Cyclic) [Chemical Structural Class]

Alkylmonothiophenes [Chemical Structural Class] Aryl/Heteroarylmonothiophenes [Chemical Structural Class] Benzothiophenes [Chemical Structural Class] Condensed Cylcic Thiophenes [Chemical Structural Class] Halomonothiophenes [Chemical Structural Class] Monothiophenes (Others) [Chemical Structural Class] Oligothiophenes [Chemical Structural Class] Polythiophenes [Chemical Structural Class]

1,2,3-Triazoles [Chemical Structural Class] 1,2,4-Triazoles [Chemical Structural Class]