| Label | Id | |
|---|---|---|
| -NH-COOH | http://purl.obolibrary.org/obo/CHEBI_37017 | |
| 3-oxo-L-alanine | http://purl.obolibrary.org/obo/CHEBI_37012 | |
| 4-Oxoproline | http://purl.obolibrary.org/obo/CHEBI_37011 | |
| 4-oxo-DL-proline | http://purl.obolibrary.org/obo/CHEBI_37011 | |
| 4-oxoproline | http://purl.obolibrary.org/obo/CHEBI_37011 | |
| Cimifugin | http://purl.obolibrary.org/obo/CHEBI_3701 | |
| L-alpha-formylglycine | http://purl.obolibrary.org/obo/CHEBI_37012 | |
| L-3-oxoalanine | http://purl.obolibrary.org/obo/CHEBI_37012 | |
| HOOC-NH- | http://purl.obolibrary.org/obo/CHEBI_37017 | |
| ribonucleoside 5'-monophosphate | http://purl.obolibrary.org/obo/CHEBI_37010 | |
| ribonucleoside 5'-monophosphates | http://purl.obolibrary.org/obo/CHEBI_37010 | |
| 4-oxopyrrolidine-2-carboxylic acid | http://purl.obolibrary.org/obo/CHEBI_37011 | |
| (2S)-2-amino-3-oxopropanoic acid | http://purl.obolibrary.org/obo/CHEBI_37012 | |
| 2-Aminomalonate semialdehyde | http://purl.obolibrary.org/obo/CHEBI_37012 | |
| 2-Ammoniomalonate semialdehyde | http://purl.obolibrary.org/obo/CHEBI_37012 |