All products are sold for Research Use Only. They are not drugs, foods, supplements, or cosmetics, are not approved by the FDA, and are not intended to diagnose, treat, cure, or prevent any disease, or for human or veterinary consumption. To continue you confirm that you are a qualified research professional aged 21 or older.
For research use only. Not for human or veterinary consumption. Not a drug, supplement, or food.
Oxytocin acetate is the acetate salt of oxytocin, a nine-amino-acid peptide hormone that is among the most studied neuropeptides in endocrine, neuroscience, and receptor-signaling research. Synex Bio Labs supplies oxytocin acetate as a lyophilized research peptide for in-vitro and laboratory use, with documentation so that researchers can verify identity and purity before starting work. This page explains what oxytocin acetate is, how it is studied, what quality documentation to expect, and how to handle the material.
Oxytocin is a cyclic nonapeptide with the sequence Cys-Tyr-Ile-Gln-Asn-Cys-Pro-Leu-Gly-NH2. A disulfide bridge between the two cysteine residues forms a six-residue ring, and the C-terminus is amidated. Its molecular weight is approximately 1,007 daltons (free base). In the body, oxytocin is produced in the hypothalamus and released from the posterior pituitary.
Peptides are commonly supplied as salts, and oxytocin acetate is the acetate form. The salt form influences solubility, handling, and net peptide content, which is why the form should be stated on the product label and the certificate of analysis. Published work on oxytocin is extensive and searchable on PubMed, and registered studies appear on ClinicalTrials.gov.
Pharmaceutical oxytocin products are a separate, regulated category that is manufactured, labeled, and prescribed under medical oversight. The oxytocin acetate offered by Synex Bio Labs is not a pharmaceutical product. It is sold strictly as a laboratory research material, and nothing on this page is a claim about effects in people.
Oxytocin acts on the oxytocin receptor (OXTR), a G-protein-coupled receptor expressed in several tissues. It can also interact with related vasopressin receptors, which is an active area of pharmacology research. In preclinical work, laboratories use oxytocin acetate to examine:
Because oxytocin is a well-characterized reference ligand, it is often used as a benchmark when researchers evaluate new receptor agonists, antagonists, or assay systems.
| Specification | Detail |
|---|---|
| Product name | Oxytocin acetate |
| Class | Synthetic cyclic nonapeptide, oxytocin receptor agonist |
| Sequence | Cys-Tyr-Ile-Gln-Asn-Cys-Pro-Leu-Gly-NH2 (disulfide Cys1-Cys6) |
| Molecular weight | ~1,007 Da, free base [confirm from your COA] |
| Format | Lyophilized (freeze-dried) powder |
| Vial size | [e.g., 2 mg / 5 mg, confirm] |
| Purity (HPLC) | [state only your real figure from the COA] |
| Salt form | Acetate [confirm from COA] |
| Identity confirmation | [Mass spectrometry, confirm] |
| Storage | Store cold, dry, and protected from light |
| Intended use | In-vitro and laboratory research only |
Oxytocin is short, but its structure creates specific quality risks. The disulfide bridge must be formed correctly. Incomplete oxidation leaves the linear form, and over-oxidation or side reactions can produce dimers and other related substances. The asparagine and glutamine residues can undergo deamidation, which changes the mass by about one dalton and can be hard to spot without careful analysis. Any of these impurities can change receptor activity and produce misleading data. That is why oxytocin acetate should come with documentation that shows identity as well as purity.
Synex Bio Labs supplies each lot of oxytocin acetate with [a certificate of analysis. Describe your real process here, e.g., each lot is tested by an independent laboratory and the report is linked on this page]. A credible oxytocin acetate COA should include:
HPLC tells you how pure the sample is, and mass spectrometry tells you whether it is the right molecule. You need both. Our guide on how to read a peptide COA (replace URL) explains what to look for, and you can use it to audit any oxytocin acetate report you receive, from us or from any other supplier.
A purity percentage from HPLC reflects relative peak area at a single detection wavelength. It does not equal the share of the vial’s mass that is peptide, because water and acetate counter-ions make up part of the powder. If your experiment depends on exact concentrations, as receptor assays usually do, ask for net peptide content and base your calculations on it rather than on the stated vial weight. This applies to oxytocin acetate as it does to every lyophilized peptide.
Lyophilized oxytocin acetate is more stable than the reconstituted peptide, but it still needs careful handling.
Treating handling as part of quality control protects the material you paid to have tested.
Researchers choosing a supplier for oxytocin acetate should compare documentation, not marketing. At Synex Bio Labs we aim to provide:
If you are comparing suppliers, our peptide NCE supply guide (replace URL) walks through a complete vetting process.
Oxytocin is regulated as a medicine in many countries, and pharmaceutical oxytocin products are a separate category from this product. This oxytocin acetate is sold for in-vitro and laboratory research only. It is not intended for human or veterinary use, or for the diagnosis, treatment, or prevention of any condition, and it must not be used as a drug, food, or supplement. By purchasing, you confirm that you are a qualified researcher or represent a research institution and that you will handle the material in line with applicable laws and your institution’s policies. Regulations on oxytocin vary by country and change over time, so confirm current requirements for your region before ordering.
What is oxytocin acetate? Oxytocin acetate is the acetate salt of oxytocin, a cyclic nonapeptide hormone that acts on the oxytocin receptor. It is a widely used reference compound in neuroendocrine and receptor-signaling research.
Is the oxytocin acetate sold by Synex Bio Labs a medicine? No. Synex Bio Labs supplies it as a laboratory research material only. Pharmaceutical oxytocin is a separate, regulated product, and this product is not intended for human or veterinary use.
What is the sequence and molecular weight of oxytocin? The sequence is Cys-Tyr-Ile-Gln-Asn-Cys-Pro-Leu-Gly-NH2 with a disulfide bridge between the two cysteines, and the molecular weight is approximately 1,007 daltons as the free base. [Confirm against your COA.]
Why does the salt form matter? The acetate form affects solubility, handling, and net peptide content. Knowing the salt form lets you calculate concentrations accurately, which matters in receptor assays.
What format does the oxytocin acetate research peptide come in? It is supplied as a lyophilized powder in a sealed vial. [Confirm vial size and fill.]
Does oxytocin acetate come with a certificate of analysis? [Yes, each lot ships with / links to a COA. State your real process.] The report should include HPLC and mass spectrometry data matched to your lot number.
How should I store oxytocin acetate? Keep the sealed vial cold, dry, and protected from light, and follow the storage instructions on your label and COA.
Can I ask about a specific batch? Yes. Contact our team (replace URL) with your lot number and we will help with questions about your documentation.
External references: PubMed: oxytocin, ClinicalTrials.gov: oxytocin, PubChem: oxytocin
All products are sold for in-vitro and laboratory research only. Not for human or veterinary use.
Yes. Every lot is independently third-party tested for identity and purity — ≥99% by HPLC and mass spectrometry — with a lot-matched Certificate of Analysis available to download on this page.
Yes. A lot-matched COA is available on this product page and in our COA library before purchase, documenting identity, purity, and full analytical results.
This product is supplied strictly for laboratory and research use only (RUO). It is not a drug, food, supplement, or cosmetic, is not approved by the FDA, and is not intended to diagnose, treat, cure, or prevent any disease, or for human or veterinary consumption.
Orders placed before 12pm CT typically ship the same business day from our U.S. facility with tracking. Store the lyophilized material at -20°C, protected from light and moisture.
