| Label | Id | |
|---|---|---|
| NOPA | http://purl.obolibrary.org/obo/CHEBI_60729 | |
| NOR-di | http://purl.obolibrary.org/obo/CHEBI_60930 | |
| NOR-tri | http://purl.obolibrary.org/obo/CHEBI_60928 | |
| NPA | http://purl.obolibrary.org/obo/CHEBI_60833 | |
| O-cyclohexanoyl-lysergol | http://purl.obolibrary.org/obo/CHEBI_60527 | |
| O-phosphoviomycin | http://purl.obolibrary.org/obo/CHEBI_60080 | |
| Olicard | http://purl.obolibrary.org/obo/CHEBI_6062 | |
| Orasorbil | http://purl.obolibrary.org/obo/CHEBI_6062 | |
| O-phosphoviomycin(1+) | http://purl.obolibrary.org/obo/CHEBI_60080 | |
| Oftanol | http://purl.obolibrary.org/obo/CHEBI_6009 | |
| Oriconazole | http://purl.obolibrary.org/obo/CHEBI_6076 | |
| OxCL | http://purl.obolibrary.org/obo/CHEBI_60456 | |
| OxLDL | http://purl.obolibrary.org/obo/CHEBI_60151 | |
| OxPL | http://purl.obolibrary.org/obo/CHEBI_60156 | |
| OxPLs | http://purl.obolibrary.org/obo/CHEBI_60156 |