| Peptide name | Sequence | MW |
| Oxytocin |
CYIQNCPLG-NH2 (Disulfide bond) | 1005.2 |
| (Thr4,Gly7)-Oxytocin | CYITNCGLG-NH2 | 940.11 |
| Oxytocin | CYIQNCPLG-NH2 | 1007.20 |
| Oxytocin (free acid) | CYIQNCPLG | 1008.19 |
| Oxytocin-2-fluoroethyl amide | CYIQNCPLG-NH-CH2CH2F | 1053.25 |
| (Ile8)-Oxytocin | CYIQNCPIG-NH2 | 1007.20 |
| (Ser4,Ile8)-Oxytocin | CYISNCPIG-NH2 | 966.15 |
| [Thr4,Gly7] Oxytocin | CYITNCGLG-NH2 | 940.1 |



