| Label | Id | |
|---|---|---|
| 1,2-butanolide | http://purl.obolibrary.org/obo/CHEBI_42639 | |
| 1,4-Butanolide | http://purl.obolibrary.org/obo/CHEBI_42639 | |
| 1,4-Lactone | http://purl.obolibrary.org/obo/CHEBI_42639 | |
| 4-Butyrolactone | http://purl.obolibrary.org/obo/CHEBI_42639 | |
| Butyrolactone | http://purl.obolibrary.org/obo/CHEBI_42639 | |
| GAMMA-BUTYROLACTONE | http://purl.obolibrary.org/obo/CHEBI_42639 | |
| dihydro-2(3H)-furanone | http://purl.obolibrary.org/obo/CHEBI_42639 | |
| dihydrofuran-2(3H)-one | http://purl.obolibrary.org/obo/CHEBI_42639 | |
| gamma-butanolactone | http://purl.obolibrary.org/obo/CHEBI_42639 | |
| gamma-butyrolactone | http://purl.obolibrary.org/obo/CHEBI_42639 | |
| gamma-hydroxybutyrolactone | http://purl.obolibrary.org/obo/CHEBI_42639 | |
| tetrahydrofuran-2-one | http://purl.obolibrary.org/obo/CHEBI_42639 | |
| 4-Deoxytetronic acid | http://purl.obolibrary.org/obo/CHEBI_42639 | |
| 4-Hydroxybutyric acid lactone | http://purl.obolibrary.org/obo/CHEBI_42639 | |
| gamma-hydroxybutyric acid lactone | http://purl.obolibrary.org/obo/CHEBI_42639 |