Oxytocin 10mg from BioSim Peptides is a high-purity, lyophilized oxytocin peptide supplied in a sealed 10 mg vial for in-vitro laboratory and neurobiology research. Each lot is third-party tested by an independent laboratory, with identity confirmed by mass spectrometry and purity of 99%+ verified by HPLC, and the Certificate of Analysis is published on our COA page. This product is intended for research use only and is not for human consumption.
Looking for a smaller quantity? The same peptide is also available as Oxytocin 5mg. Browse related compounds in our Neuropeptide Research category.
Oxytocin 10mg Specifications
- Product: Oxytocin, 10 mg per vial
- Form: White lyophilized (freeze-dried) powder in a sealed vial
- Sequence: Cys-Tyr-Ile-Gln-Asn-Cys-Pro-Leu-Gly-NH2 (CYIQNCPLG-NH2), disulfide bridge Cys1–Cys6
- Molecular formula: C43H66N12O12S2
- Molecular weight: approx. 1007.2 g/mol
- CAS number: 50-56-6
- Purity: 99%+ (HPLC)
- Testing: Third-party tested by an independent laboratory; Certificate of Analysis published on our COA page
- Storage: -20°C, protected from light and moisture
- Intended use: Laboratory research only. Not for human consumption.
What Is Oxytocin?
Oxytocin is a nine-amino-acid (nonapeptide) neuropeptide produced mainly in the paraventricular and supraoptic nuclei of the hypothalamus and released from the posterior pituitary. It was the first peptide hormone to be sequenced and synthesized, work by Vincent du Vigneaud that was recognized with the 1955 Nobel Prize in Chemistry. Because of that long history, the oxytocin peptide is one of the most thoroughly characterized reference compounds in neuroendocrinology.
Molecular Structure
Oxytocin is a cyclic peptide: a disulfide bond between the cysteine residues at positions 1 and 6 forms a six-residue ring, followed by a three-residue tail (Pro-Leu-Gly) with an amidated C-terminus. The intact disulfide ring is essential to its structure, which is why storage and handling conditions that protect the disulfide bond matter in the laboratory. Oxytocin is structurally related to vasopressin, which differs at two positions (3 and 8).
Oxytocin Receptor (OXTR) Signaling in Research Models
Oxytocin acts on the oxytocin receptor (OXTR), a class A G protein-coupled receptor. In cell-based research models, OXTR couples mainly to Gq/11, activating phospholipase C, generating IP3 and diacylglycerol and raising intracellular calcium. OXTR is expressed in the brain and in peripheral tissues, so oxytocin is widely used as a reference agonist in receptor-binding, calcium-flux and signaling assays. Because oxytocin and vasopressin are closely related, researchers often include vasopressin receptor controls when interpreting results.
Research Applications of Oxytocin Peptide
Social Neuroscience and Behavioral Research
Oxytocin is a standard tool compound in published preclinical research on social recognition, affiliative behavior and maternal behavior in animal models, and on the neural circuits in the hypothalamus, amygdala and reward pathways that mediate them.
Neuroendocrine and Stress-Axis Research
Laboratories study how the oxytocin system interacts with the hypothalamic-pituitary-adrenal (HPA) axis, and how OXTR expression is regulated, including genetic and epigenetic variation in the OXTR gene.
Reproductive and Smooth-Muscle Physiology
Oxytocin is a classic reference agonist for in-vitro studies of uterine and mammary smooth-muscle contraction and of how OXTR expression changes in reproductive tissues.
Peripheral Receptor and Metabolic Studies
OXTR is also found in tissues such as adipose tissue, heart and pancreatic islets, and researchers use oxytocin to investigate receptor signaling in these peripheral systems.
Oxytocin 5mg or Oxytocin 10mg?
Both vials contain the same peptide, tested to the same standard. The 10mg vial holds twice the material of our Oxytocin 5mg vial, which suits research protocols that need more peptide from a single lot.
Quality, Third-Party Testing and Certificate of Analysis
Every lot of Oxytocin 10mg is third-party tested by an independent laboratory, with purity of 99%+ verified by HPLC and identity confirmed by mass spectrometry. Certificates of Analysis are published on our COA page, where you can review the current lot before ordering. COAs are published online and are not included in the package.
Storage and Handling
- Store the lyophilized powder at -20°C, protected from light and moisture.
- Let the sealed vial reach room temperature before opening to limit condensation.
- Reconstitute under aseptic conditions with a sterile solvent chosen for your research protocol, and avoid reducing agents that can break the disulfide bond.
- Store reconstituted solutions at 2–8°C, split into aliquots and avoid repeated freeze-thaw cycles.
For reconstitution, Hospira Bacteriostatic Water 30mL is available separately.
Shipping
Orders ship in 2 business days with tracking.
Oxytocin 10mg FAQ
What is Oxytocin 10mg?
Oxytocin 10mg is a vial containing 10 mg of lyophilized oxytocin, a cyclic nine-amino-acid peptide (CAS 50-56-6, C43H66N12O12S2, approx. 1007.2 g/mol). BioSim Peptides supplies it for in-vitro and laboratory research use only.
Is the Oxytocin from BioSim Peptides third-party tested?
Yes. Every lot of Oxytocin 10mg is third-party tested by an independent laboratory, with purity of 99%+ verified by HPLC and identity confirmed by mass spectrometry. Certificates of analysis are published on our COA page (biosimpeptides.com/coa).
Is a Certificate of Analysis included with my order?
Certificates of analysis are published on our COA page (biosimpeptides.com/coa) rather than shipped in the package, so you can review the current lot before you order.
How should Oxytocin 10mg be stored?
Store lyophilized Oxytocin at -20°C, protected from light and moisture. After reconstitution, keep it at 2-8°C, split it into aliquots and avoid repeated freeze-thaw cycles. Avoid reducing agents, which can break the peptide’s disulfide bond.
How fast does BioSim Peptides ship?
Orders ship in 2 business days via tracked carriers.
Is Oxytocin 10mg approved for human use?
No. Oxytocin 10mg is supplied for laboratory research only. It is not a drug, dietary supplement, cosmetic, or food, and is not intended for diagnosis, treatment, cure, or prevention of any disease in humans or animals.
Research Use Only
Oxytocin 10mg is sold strictly for laboratory research. It is not a drug, dietary supplement, cosmetic or food, has not been approved by the FDA for human or veterinary use, and is not intended to diagnose, treat, cure or prevent any disease. No dosing or administration information is provided. Researchers are responsible for handling, storing and disposing of this material in line with all applicable institutional, local, state and federal regulations.
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