Oxytocin Acetate 5mg (10 Vials / Kit)

Oxytocin at a glance

Oxytocin is a cyclic nonapeptide, Cys-Tyr-Ile-Gln-Asn-Cys-Pro-Leu-Gly-NH2, in which a disulfide bond between the two cysteines closes a six-residue ring and a short tail ends in an amidated glycine. Magnocellular neurons of the hypothalamus make it and release it into the bloodstream from the posterior pituitary, while other neurons distribute it within the brain. Vincent du Vigneaud's synthesis of the hormone was a landmark in peptide chemistry. Formula: C43H66N12O12S2; molecular weight 1007.19 g/mol.

Price and availability

This is TFC Peptides‘s kit of 10 vials at 5mg each (50 mg in total), dispatched from Tianjin, China. At $45.00 for the kit, that works out to $0.90 per mg. Across 6 brands listing Oxytocin here, the middle half of prices falls between $0.80 and $1.80 per mg; this kit is inside that range. Checkout goes into escrow first; the funds move to TFC Peptides once delivery is confirmed.

What it is studied for

Its receptor, OXTR, is a G-protein-coupled receptor that mainly signals through Gq, raising intracellular calcium. Peripherally, that drives contraction of uterine smooth muscle and of myoepithelial cells in the mammary gland. In the brain, receptors in the amygdala, nucleus accumbens and other regions are studied for roles in social recognition, pair bonding in prairie voles and stress-axis regulation. Oxytocin also binds vasopressin receptors at higher concentrations, and the structural similarity of the two hormones complicates interpretation. For spray formats, a central research question is how much peptide actually reaches the brain.

Research and regulatory status

Synthetic oxytocin is an approved medicine for inducing or strengthening labor and controlling postpartum hemorrhage, so its obstetric pharmacology is well documented. Behavioral research is a different story. Early studies of trust and social cognition attracted wide attention, but later replication efforts and larger trials, including in autism, often produced null or modest results. Methodological debates about measuring peripheral levels and central delivery continue. Outside obstetrics, it remains an investigational subject rather than an established intervention.

Checking the lab data

For a liquid spray, the report should cover more than purity. Mass spectrometry should confirm the oxytocin mass, and HPLC should quantify the peptide against a reference standard, since the label states concentration in international units. Related substances, such as deamidated or disulfide-scrambled forms, should be listed. Because the product is a solution, preservative identity, pH and microbial testing are relevant, along with a batch number and test date.

No independent report is attached to this listing yet. You can compare brands that publish one on the marketplace or browse the lab reports directory.

Listing details

Compound

Oxytocin

Class

Nonapeptide neurohormone

Format

Nasal spray

Molecular formula

C43H66N12O12S2

Molecular weight

1007.19 g/mol

Vial strength

5mg

Vials per kit

10

Total content

50 mg

Price per mg

$0.90

Sold by

TFC Peptides

Ships from

Tianjin, China

Lab report

Not yet published

Storage and preparation

Freeze-dried peptide keeps best sealed, cold and dark. Once it has been dissolved, refrigerate it, avoid repeated warming and follow the stability limits in your study protocol.

Concentration arithmetic: one 5 mg vial dissolved in 2 mL gives 2.5 mg/mL, or 5 mg/mL in 1 mL. The Research Lab calculator in your dashboard handles any other volume.

Buyer questions

Supplied for laboratory research only. Not for human or veterinary use, and not a substitute for any prescription medicine. Nothing on this page is medical advice.