composés chimiques
| Nom | Type | Notoriété | Popularité |
|---|---|---|---|
| Quaterthiophène | Concept | 1 | 0.2 |
| Quazepam | Concept | 17 | 0.5 |
| Quercitrine | Concept | 12 | 0.4 |
| Quercétagétine | Concept | 9 | 0.0 |
| Quercétine | Concept | 33 | 68.1 |
| Queuine | Concept | 8 | 0.1 |
| Queuosine | Concept | 7 | 1.1 |
| Quinacridone | Concept | 15 | 5.8 |
| Quinacrine | Concept | 22 | 8.8 |
| Quinapril | Concept | 25 | 1.0 |
| Quinazoline | Concept | 20 | 1.6 |
| Quinazolinone | Composé Chimique | 10 | 1.1 |
| Quinidine | Concept | 32 | 19.1 |
| Quinine | Concept | 67 | 355.5 |
| Quinolizidine | Concept | 18 | 0.8 |
| Quinoléine | Concept | 39 | 17.8 |
| Quinone | Concept | 37 | 25.2 |
| Quinovose | Concept | 4 | 1.1 |
| Quinoxaline | Concept | 20 | 1.7 |
| Quinupristine-dalfopristine | Médicament | 13 | 2.2 |
| Québécol | Concept | 6 | 5.8 |
| Quétiapine | Concept | 41 | 255.1 |
| R404a | Concept | 4 | 23.7 |
| R407c | Concept | 8 | 28.4 |
| R410a | Concept | 19 | 42.1 |
| R422d | Concept | 1 | 2.4 |
| R507 | Concept | 2 | 4.3 |
| R508b | Concept | 1 | 0.8 |
| R723 | Concept | 1 | 0.6 |
| Rac-myclobutanil | Concept | 11 | 5.0 |
| Racetam | Concept | 13 | 1.7 |
| Racine D'iris | Structure Anatomique | 6 | 0.3 |
| Raclopride | Concept | 7 | 1.1 |
| Ractopamine | Concept | 18 | 5.1 |
| Racécadotril | Concept | 12 | 54.3 |
| Radeau Lipidique | Concept | 21 | 21.9 |
| Radialène | Composé Chimique | 9 | 1.1 |
| Radical | Concept | 70 | 110.6 |
| Radical Cyano | Concept | 10 | 0.9 |
| Radical Hydroxyle | Concept | 27 | 9.2 |
| Radical Nitrate | Concept | 7 | 0.8 |
| Radical Sulfanyle | Concept | 10 | 0.9 |
| Radicicol | Concept | 7 | 0.1 |
| Radier | Substance | 16 | 79.7 |
| Radier Inondable | Substance | 6 | 1.5 |
| Radionucléide | Concept | 64 | 49.4 |
| Radiotraceur | Concept | 22 | 6.3 |
| Radium 223 | Concept | 9 | 3.2 |
| Radium 226 | Concept | 6 | 1.0 |
| Radon 220 | Concept | 6 | 0.8 |