| Label | Id | |
|---|---|---|
| Pro-Leu | 74791 | |
| Pro-Lys | 74792 | |
| Pro-Lys-Lys | 162479 | |
| Pro-Phe | 74795 | |
| Pro-Trp | 74797 | |
| Pro-Tyr | 74799 | |
| Ps(15:0/20:3(8z,11z,14z)) | 185479 | |
| Pseudo-Anisatin | 177479 | |
| SB-203207 | 225479 | |
| S-alkyl-L-cysteine | 47915 | |
| S-hydrocarbyl-L-cysteine | 47913 | |
| S-organyl-L-cysteine | 47912 | |
| S-prenyl-L-cysteine | 47914 | |
| Ser-Thr-Lys | 163479 | |
| Sinensine | 214796 |