Oxytocin

Oxytocin is a cyclic nonapeptide (nine amino acids) with the molecular formula C43H66N12O12S2 and a molecular weight of 1,007.19 g/mol. Its amino acid sequence — Cys-Tyr-Ile-Gln-Asn-Cys-Pro-Leu-Gly-NH2 — forms a ring through a disulfide bond between the two cysteine residues at positions 1 and 6. First synthesized in 1953, it was the first peptide hormone ever produced in a laboratory. Oxytocin is classified as both a neuropeptide and a peptide hormone, naturally produced in the hypothalamus. It is identified by CAS number 50-56-6.

Supplied as one individual 10 mg vial. Each purchase quantity refers to one individual vial, not a supplier box.

Chemical identifiers refer to the stated reference form; salt counterions can change formula weight. Follow the supplied material’s documentation for storage and handling. Cited research is not a batch analysis of this product.

For laboratory research use only. Not for human or animal use.

Research and chemical references

• Oxytocin sequence and chemical identity
• Oxytocin synthesis historical reference