| Label | Id | |
|---|---|---|
| -CO-COOH | http://purl.obolibrary.org/obo/CHEBI_30871 | |
| HO-CO-CO- | http://purl.obolibrary.org/obo/CHEBI_30871 | |
| carboxycarbonyl | http://purl.obolibrary.org/obo/CHEBI_30871 | |
| oxalo | http://purl.obolibrary.org/obo/CHEBI_30871 | |
| oxalyl | http://purl.obolibrary.org/obo/CHEBI_30871 | |
| oxalo group | http://purl.obolibrary.org/obo/CHEBI_30871 |
