Azole
An azole is a type of organic compound. Azoles have a pentagon-shaped ring of five atoms. Azoles have two double bonds, like cyclopentadiene, and have at least …

An azole is a type of organic compound. Azoles have a pentagon-shaped ring of five atoms. Azoles have two double bonds, like cyclopentadiene, and have at least one nitrogen atom.[1]
Azole is the systematic name of pyrrole, the simplest azole. Its analogs are called pyrroles. Other azoles can have a second heteroatom, which can be chalcogen (oxygen, sulfur, selenium, or tellurium) or more nitrogen.
Types
Azoles are grouped by the type of heteroatom in the ring.
| Type | Second heteroatom | Example | Example structure |
|---|---|---|---|
| Pyrroles | None | Pyrrole | |
| Oxazoles | Oxygen | Oxazole | |
| Isoxazole | |||
| Thiazoles | Sulfur | Thiazole | |
| Isothiazole | |||
| Imidazoles | Nitrogen | Imidazole | |
| Pyrazole |
There are also selenazoles and tellurazoles, containing selenium and tellurium. These molecules are much less common and do not have notable applications.
Sources
- ↑ "Azole". Merriam-Webster Dictionary. Retrieved 2025-09-19.
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