| Label | Id | |
|---|---|---|
| Reductiline | 220240 | |
| Rel-(1S,2S,3S)-2,8-dihydroxy-6-methoxy-1,3-dimethyl-3,4-dihydro-1H-xanthen-9(2H)-one | 218249 | |
| Resorcinin | 224217 | |
| Ribocitrin | 202461 | |
| Roubetaoellatide | 222446 | |
| Rubetauphelol | 219224 | |
| Rubropunctamine | 227824 | |
| Rulepidol | 223424 | |
| Rustoside | 176240 | |
| S-(1,2-dicarboxyethyl)glutathione | 142440 | |
| S-12-hydroxyfarnesyl-L-cysteine | 22024 | |
| S-4-benzyl-3-((S)-3-hydroxy-2,2-dimethyloctanoyl)oxazolidin-2-one | 186245 | |
| S3I-201 | 91224 | |
| SCH-56396 | 224311 | |
| SF-1902-A4b | 202465 |