| Label | Id | |
|---|---|---|
| P(OH)3 | http://purl.obolibrary.org/obo/CHEBI_36361 | |
| PCA | http://purl.obolibrary.org/obo/CHEBI_36751 | |
| PCDD | http://purl.obolibrary.org/obo/CHEBI_36682 | |
| PCDDs | http://purl.obolibrary.org/obo/CHEBI_36682 | |
| PGF3alpha | http://purl.obolibrary.org/obo/CHEBI_36075 | |
| PhCF3 | http://purl.obolibrary.org/obo/CHEBI_36810 | |
| Phthalsaeureanhydrid | http://purl.obolibrary.org/obo/CHEBI_36605 | |
| Pinosylvin | http://purl.obolibrary.org/obo/CHEBI_36011 | |
| Plegomazin | http://purl.obolibrary.org/obo/CHEBI_3649 | |
| Prestwick_388 | http://purl.obolibrary.org/obo/CHEBI_36 | |
| Propadrine | http://purl.obolibrary.org/obo/CHEBI_36 | |
| Propaphenin | http://purl.obolibrary.org/obo/CHEBI_3649 | |
| Psichial | http://purl.obolibrary.org/obo/CHEBI_3612 | |
| Pyrrole-2-carboxylate | http://purl.obolibrary.org/obo/CHEBI_36751 | |
| Pyrrolidinone | http://purl.obolibrary.org/obo/CHEBI_36592 |