35748-51-7

Pressinoic Acid is a synthetic hexapeptide with potent corticotrophin-releasing activity. Pressinoic Acid is also an oxytocin inhibitor; it induces maternal behavior.

This cyclic hexapeptide (FW = 774.86 g/mol; CAS 35748-51-7) corresponds to the N-terminal six amino acyl residues of vasopressin. If Phe-3 is replaced with Ile, the resulting cyclic hexapeptide, known as tocinoic acid. is identical to the N-terminal six amino acid residues of oxytocin. Pressinoic acid has no known pressor activity, perhaps as result of the loss of the carboxy-terminal tripeptide and/or the incorrect orientation of the Asn-5 side-chain This hexapeptide also activates pineal acetyl-CoA hydrolase and has a potent corticotrophin-releasing activity. Target(s): serotonin N-acetyltransferase.

[1] Saffran M, et al. Pressinoic acid: a peptide with potent corticotrophin-releasing activity. Biochem Biophys Res Commun. 1972 Nov 1;49(3):748-51. DOI:10.1016/0006-291x(72)90474-3
[2] Langs DA, et al. Structure of pressinoic acid: the cyclic moiety of vasopressin. Science. 1986 Jun 6;232(4755):1240-2. DOI:10.1126/science.3704648