| Label | Id | |
|---|---|---|
| carbon-12 | http://purl.obolibrary.org/obo/CHEBI_36931 | |
| fluorine-18 | http://purl.obolibrary.org/obo/CHEBI_36939 | |
| nitrogen-13 | http://purl.obolibrary.org/obo/CHEBI_36935 | |
| nitrogen-14 | http://purl.obolibrary.org/obo/CHEBI_36938 | |
| nitrogen-15 | http://purl.obolibrary.org/obo/CHEBI_36934 | |
| nitrogen-16 | http://purl.obolibrary.org/obo/CHEBI_36936 | |
| nitrogen-17 | http://purl.obolibrary.org/obo/CHEBI_36937 | |
| carbon-10 atom | http://purl.obolibrary.org/obo/CHEBI_36930 | |
| carbon-12 atom | http://purl.obolibrary.org/obo/CHEBI_36931 | |
| oxygen-15 atom | http://purl.obolibrary.org/obo/CHEBI_36932 | |
| oxygen-19 atom | http://purl.obolibrary.org/obo/CHEBI_36933 | |
| nitrogen-15 atom | http://purl.obolibrary.org/obo/CHEBI_36934 | |
| nitrogen-13 atom | http://purl.obolibrary.org/obo/CHEBI_36935 | |
| nitrogen-16 atom | http://purl.obolibrary.org/obo/CHEBI_36936 | |
| nitrogen-17 atom | http://purl.obolibrary.org/obo/CHEBI_36937 |