Name: Oxytocin Acetate 2mg (10 Vials / Kit)
Brand: HK Peptide
SKU: HK-OT2
Price: 30.00 USD
Availability: InStock

What is Oxytocin?

Oxytocin is a naturally occurring nonapeptide with an internal disulfide bridge, synthesized in the hypothalamus and released from the posterior pituitary. It is one of the most extensively studied neuropeptides, and synthetic oxytocin is also the active ingredient in approved medicines used clinically to support labor and manage postpartum bleeding, giving it a well-established pharmacological profile.

How it is understood to work

Oxytocin acts on the oxytocin receptor (OXTR), a G-protein-coupled receptor expressed in the uterus, mammary gland, and multiple brain regions. Receptor activation triggers smooth-muscle contraction peripherally and modulates neural circuits involved in social recognition, trust, and stress reactivity centrally, which is the basis for its use in both reproductive and behavioral neuroscience research.

Research status

Oxytocin is a major subject of social neuroscience research, including studies of bonding, empathy, and anxiety-related behavior, alongside its long-established role in reproductive physiology research on labor and lactation. Its receptor pharmacology and physiological actions are well characterized relative to many peptides, though behavioral effects in humans remain an active and sometimes debated area of study.

This listing: HK Peptide Oxytocin

Brand: HK Peptide
Kit: 10 vials × 2 mg (20 mg in total)
Price per vial: $3.00
Price per mg: $1.50
Other strengths: 10mg $80.00
Also sold by: Uther Peptide 10mg $60.00

Lab testing

There is no public lab report for this listing yet. We can ask the brand for the batch COA before you order. Many buyers also split an independent HPLC test with others who bought the same batch.

Request the batch COA · How group testing works

Bought through escrow: the brand is only paid after you confirm delivery. If the parcel never arrives, or an independent test shows the wrong compound or a significant under-fill, open a claim before releasing payment.

Specifications

Compound: Oxytocin
Class: Nonapeptide neurohormone
Form: Lyophilized (freeze-dried) powder
Per vial: 2mg
Molecular formula: C₄₃H₆₆N₁₂O₁₂S₂
Molecular weight: 1007.2 g/mol
Sequence: Cys-Tyr-Ile-Gln-Asn-Cys-Pro-Leu-Gly-NH2 (disulfide)
Stated purity: ≥99% (HPLC)
Appearance: White lyophilized powder

Handling & storage

Supplied as a lyophilized powder; store unopened vials at -20C protected from light, and keep reconstituted solution refrigerated, since oxytocin’s disulfide bond and short peptide backbone make it susceptible to degradation at room temperature.

Concentration check: adding 2 ml of bacteriostatic water to one 2 mg vial gives 1 mg/ml. The Research Lab calculator in your dashboard works this out for any volume.

Questions

Is this the same oxytocin used clinically to induce labor?

It is the same nonapeptide molecule, but this research-grade material is supplied strictly for laboratory study and is not manufactured, formulated, or labeled as the approved clinical injection.

Why are there both Acetate and non-Acetate listings?

Oxytocin acetate refers to the salt form in which the peptide is stabilized during synthesis; the acetate counterion improves powder stability and is standard for lyophilized peptide preparations of this kind.

How much Oxytocin is in this kit?

10 vials of 2 mg each, so 20 mg in total. The lab testing section above shows what the brand’s tested vial actually contained.

For laboratory research use only. Not for human or veterinary use. Nothing on this page is medical advice.