Oxytocin

1961-3-1

Cys-Tyr-Ile-Gln-Asn-Cys-Pro-Leu-Gly-NH2（Cys1&Cys6 bridge)

Pressinoic Acid

1961-3-2

Cys-Tyr-Phe-Gln-Asn-Cys

[Asu 1,6] Oxytocin

1961-3-3

Tyr-Ile-Gln-Asn-Asu-Pro-Leu-Gly-NH2

[Ile3] Pressinoic Acid

1961-3-4

Cys-Tyr-Ile-Gln-Asn-Cys

[Thr4,Gly7] Oxytocin

1961-3-5

Cys-Tyr-Ile-Thr-Asn-Cys-Gly-Leu-Gly-NH2