| Label | Id | |
|---|---|---|
| Procurcumenol | 168250 | |
| Protoleucomelone | 168891 | |
| Pubesenolide | 168182 | |
| Rhubafuran | 168289 | |
| Rigin | 171682 | |
| Rivenprost | 168543 | |
| Rofficerone | 168022 | |
| Rubroskyrin | 168192 | |
| S(6)-acetyldihydrolipoamide | 16807 | |
| S(8)-aminomethyldihydrolipoylprotein | 16882 | |
| S-methyl-5-thio-D-ribose | 16895 | |
| SC-30532 | 221684 | |
| SPF-5506-A4 | 216846 | |
| Ser-His-Ser | 163168 | |
| Seryllysine | 168940 |