| Label | Id | |
|---|---|---|
| nitrogen, isotope of mass 16 | http://purl.obolibrary.org/obo/CHEBI_36936 | |
| fluorine, isotope of mass 18 | http://purl.obolibrary.org/obo/CHEBI_36939 |
| Label | Id | |
|---|---|---|
| nitrogen, isotope of mass 16 | http://purl.obolibrary.org/obo/CHEBI_36936 | |
| fluorine, isotope of mass 18 | http://purl.obolibrary.org/obo/CHEBI_36939 |