Oxytocin free acid, also known as 9-Deamidooxytocin, is an analog of oxytocin where the glycinamide residue at position 9 has been substituted with a glycine residue. Oxytocin, a pleiotropic peptide hormone, has wide-ranging implications for general health, adaptation, development, reproduction, and social behavior.
[Leu3]-Oxytocin, an oxytocin analogue, is a derivative of oxytocin wherein the leucine amino acid (Leu) has been substituted at the 3rd position in the sequence.