| Label | Id | |
|---|---|---|
| (5E)-6-hydroxy-5-(2-hydroxy-5-oxido-6-oxopyridin-3(6H)-ylidene)-2-oxo-2,5-dihydropyridin-3-olate | http://purl.obolibrary.org/obo/CHEBI_64998 | |
| (E)-2,2',5,5'-tetrahydroxy-6H,6'H-(3,3'-bipyridinylidene)-6,6'-dione | http://purl.obolibrary.org/obo/CHEBI_64998 | |
| nicotine blue | http://purl.obolibrary.org/obo/CHEBI_64998 | |
| nicotine blue(2-) | http://purl.obolibrary.org/obo/CHEBI_64998 |