| Label | Id | |
|---|---|---|
| NeuAcalpha2-8NeuAcalpha2-3Galbeta1-4Glcbeta1-1'Cer(2-) | http://purl.obolibrary.org/obo/CHEBI_78436 | |
| Numorphan | http://purl.obolibrary.org/obo/CHEBI_7866 | |
| O-(hydroxy{(2R)-3-hydroxy-2-[(5Z,8Z,11Z,14Z)-icosa-5,8,11,14-tetraenoyloxy]propoxy}phosphoryl)-L-serine | http://purl.obolibrary.org/obo/CHEBI_78703 | |
| OTEZLA | http://purl.obolibrary.org/obo/CHEBI_78540 | |
| OXT | http://purl.obolibrary.org/obo/CHEBI_7872 | |
| Oceral | http://purl.obolibrary.org/obo/CHEBI_7826 | |
| Ocuclear | http://purl.obolibrary.org/obo/CHEBI_7863 | |
| Ocytocin | http://purl.obolibrary.org/obo/CHEBI_7872 | |
| Ophiobolene | http://purl.obolibrary.org/obo/CHEBI_78293 | |
| Orasthin | http://purl.obolibrary.org/obo/CHEBI_7872 | |
| Osladin | http://purl.obolibrary.org/obo/CHEBI_7800 | |
| Otobain | http://purl.obolibrary.org/obo/CHEBI_7803 | |
| Otonecine | http://purl.obolibrary.org/obo/CHEBI_7804 | |
| Ovatifolin | http://purl.obolibrary.org/obo/CHEBI_7806 | |
| Ovatine | http://purl.obolibrary.org/obo/CHEBI_7807 |