| Label | Id | |
|---|---|---|
| -CO-CO- | http://purl.obolibrary.org/obo/CHEBI_30870 | |
| dioxoethane-1,2-diyl | http://purl.obolibrary.org/obo/CHEBI_30870 | |
| ethanedioyl | http://purl.obolibrary.org/obo/CHEBI_30870 | |
| oxalyl | http://purl.obolibrary.org/obo/CHEBI_30870 | |
| oxalyl group | http://purl.obolibrary.org/obo/CHEBI_30870 |
