| Label | Id | |
|---|---|---|
| Rubetaulfoen | 227305 | |
| Rubrivivaxin | 227433 | |
| Rubropunctamine | 227824 | |
| Rubropunctatine | 227418 | |
| Ruckerbactin | 222717 | |
| SCH-64875 | 222733 | |
| SF-2140 | 222791 | |
| SW-163A | 227411 | |
| Sch-213766 | 227256 | |
| Sch56036 | 227463 | |
| Scytodecamide | 227101 | |
| Sioxanthin | 227663 | |
| Sorbicillinol | 227603 | |
| Spicatin | 9227 | |
| Spirocurvulaide | 227905 |