| Label | Id | |
|---|---|---|
| UDP-2-acetamido-4-amino-2,4,6-trideoxyglucose | http://purl.obolibrary.org/obo/CHEBI_16549 | |
| Xanthommatin | http://purl.obolibrary.org/obo/CHEBI_16550 | |
| Undecanoylcholine | http://purl.obolibrary.org/obo/CHEBI_165638 | |
| Undecaprenol | http://purl.obolibrary.org/obo/CHEBI_16591 | |
| UpA | http://purl.obolibrary.org/obo/CHEBI_165828 | |
| UpC | http://purl.obolibrary.org/obo/CHEBI_165829 | |
| UpG | http://purl.obolibrary.org/obo/CHEBI_165830 | |
| UpU | http://purl.obolibrary.org/obo/CHEBI_165831 | |
| Verbasoside | http://purl.obolibrary.org/obo/CHEBI_165238 | |
| Trimetaphosphate | http://purl.obolibrary.org/obo/CHEBI_16517 | |
| Wybutoxine | http://purl.obolibrary.org/obo/CHEBI_165847 | |
| Z-Gly | http://purl.obolibrary.org/obo/CHEBI_16532 | |
| Zeatin | http://purl.obolibrary.org/obo/CHEBI_16522 | |
| [(2R)-2-(1,2-dihydroxyethyl)-4-hydroxy-5-oxo-2,5-dihydrofuran-3-yl]oxidanyl | http://purl.obolibrary.org/obo/CHEBI_16504 | |
| [SeH2] | http://purl.obolibrary.org/obo/CHEBI_16503 |