| Label | Id | |
|---|---|---|
| 2-oxo-2H-pyrans | http://purl.obolibrary.org/obo/CHEBI_75885 | |
| 2-pyranones | http://purl.obolibrary.org/obo/CHEBI_75885 | |
| 2-pyrones | http://purl.obolibrary.org/obo/CHEBI_75885 | |
| 2H-pyran-2-ones | http://purl.obolibrary.org/obo/CHEBI_75885 | |
| alpha-pyrones | http://purl.obolibrary.org/obo/CHEBI_75885 | |
| pyran-2-ones | http://purl.obolibrary.org/obo/CHEBI_75885 |
