composés chimiques
| Nom | Type | Notoriété | Popularité |
|---|---|---|---|
| Prénol | Concept | 18 | 4.2 |
| Préphytoène Diphosphate | Concept | 8 | 1.0 |
| Prépreg | Substance | 10 | 8.9 |
| Prétilachlore | Concept | 3 | 1.2 |
| Prétomanide | Concept | 16 | 0.0 |
| Pseudo-fossile | Concept | 14 | 0.7 |
| Pseudocumène | Concept | 22 | 0.2 |
| Pseudocytidine | Concept | 3 | 0.6 |
| Pseudohalogène | Composé Chimique | 24 | 1.0 |
| Pseudoisocytidine | Concept | 3 | 0.2 |
| Pseudopeptidoglycane | Composé Chimique | 11 | 1.8 |
| Pseudophrynamine | Composé Chimique | 1 | 0.3 |
| Pseudopode | Concept | 37 | 29.9 |
| Pseudotropine | Concept | 5 | 0.7 |
| Pseudouridine | Concept | 22 | 5.1 |
| Psi-tectorigénine | Concept | 8 | 0.6 |
| Psicose | Concept | 30 | 5.1 |
| Psilocine | Concept | 32 | 15.6 |
| Psilocybine | Concept | 53 | 104.1 |
| Psittacine | Substance | 3 | 0.1 |
| Psoralène | Concept | 27 | 8.9 |
| Psycholeptique | Composé Chimique | 6 | 14.9 |
| Psychotrine | Concept | 1 | 0.0 |
| Psychotrope | Concept | 55 | 319.9 |
| Psykter | Substance | 24 | 1.1 |
| Pti-1 | Concept | 3 | 0.0 |
| Pti-2 | Concept | 3 | 0.0 |
| Pti-3 | Concept | 4 | 0.0 |
| Ptéridine | Concept | 29 | 1.3 |
| Ptérine | Concept | 21 | 1.2 |
| Pukatéine | Concept | 7 | 0.0 |
| Pullulane | Composé Chimique | 15 | 6.8 |
| Pulpe de Carotte | Substance | 1 | 0.1 |
| Pulégone | Concept | 18 | 1.7 |
| Pumiliotoxine | Composé Chimique | 8 | 2.1 |
| Punicalagine | Composé Chimique | 10 | 2.8 |
| Purin | Substance | 8 | 58.6 |
| Purine | Concept | 63 | 101.3 |
| Puromycine | Concept | 22 | 4.3 |
| Purple Drank | Composé Chimique | 23 | 354.1 |
| Purpurine | Concept | 13 | 2.8 |
| Purr | Concept | 11 | 0.9 |
| Putrescine | Concept | 30 | 20.4 |
| Pv8 | Concept | 5 | 0.6 |
| Pykrete | Substance | 27 | 8.2 |
| Pyocyanine | Concept | 14 | 0.6 |
| Pyomélanine | Substance | 3 | 0.0 |
| Pyoverdine | Composé Chimique | 11 | 4.4 |
| Pyran-2-one | Concept | 17 | 0.3 |
| Pyran-4-one | Concept | 17 | 0.3 |