| Peptide name | Sequence | M.W. |
| Motilin, human, porcine | FVPIFTYGELQRMQEKERNKGQ | 2699.1 |
| Motilin, canine | FVPIFTHSELQKIREKERNKGQ | 2685.1 |
| [Leu13] Motilin, human, porcine | FVPIFTYGELQRLQEKERNKGQ | 2681.1 |
| [Nle13]-Motillin |
FVPIFTYGELQR(Nle)QEKERNKGQ |
2681.1 |
| (Nle13, Glu14) Motilin, human, porcine |
FVPIFTYGELQR(Nle)EEKERNKGQ |
2682.05 |



