Oxytocin5mg–10mg
$80Lyophilized Oxytocin supplied as a research reference standard.
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Supplied to qualified labs and institutional buyers. Institutional use & eligibility
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Example Certificate of Analysis
Certificate of Analysis
Oxytocin
Lot Number
EXAMPLE-LOT
Purity (HPLC)
≥99%
Nominal Fill
5mg
Illustrative example of the certificate format issued for this compound. Purity and specification figures are the published values for Oxytocin; the lot number and test date are placeholders, not a real result. The certificate for the specific lot you receive is matched to the lot number printed on the vial. For laboratory research use only.
Characteristics
| Molecular Formula | C₄₃H₆₆N₁₂O₁₂S₂ |
|---|---|
| CAS Number | 50-56-6 |
| Molar Mass | 1007.19 g/mol |
| Amino Acid Sequence | Cys-Tyr-Ile-Gln-Asn-Cys-Pro-Leu-Gly-NH₂ (disulfide bond Cys1-Cys6) |
| Synonyms | Oxytocin, Pitocin, OXT, Syntocinon |
| Physical Form | Lyophilized powder |
| Solubility | Soluble in water and dilute acetic acid |
| Organoleptic Profile | White lyophilized powder; odorless |
| Purity | ≥98% by HPLC |
| Storage Conditions | Store lyophilized at -20°C; reconstituted solution stable at 2-8°C for up to 7 days |
How is Oxytocin used in research?
Oxytocin is a 9-amino acid cyclic neuropeptide supplied as a lyophilized reference standard for in-vitro receptor-binding assays, structural studies, and analytical method validation. The disulfide-bridged nonapeptide (Cys-Tyr-Ile-Gln-Asn-Cys-Pro-Leu-Gly-NH₂) was the first peptide hormone chemically synthesized (du Vigneaud, 1953) and is a foundational reference compound in peptide chemistry. Not for use in any living organism.
Laboratory workflows profile oxytocin in oxytocin-receptor (OXTR) binding assays on recombinant OXTR expression systems, with standard readouts including competitive radio-ligand binding, IP1 accumulation, and calcium-flux panels. The compound is routinely used as an identity and purity reference in HPLC and LC-MS method development.
Researchers apply oxytocin as an analytical reference standard for structural characterization (NMR, mass spectrometry, circular dichroism of the disulfide bridge), for receptor-selectivity profiling against vasopressin V1a/V1b/V2 receptor panels, and as a historical synthesis reference in peptide-chemistry teaching and method-validation laboratories.
Areas of Study
In-Vitro Receptor-Binding Assays
Used as a reference OXTR ligand in competitive binding and functional (IP1, calcium-flux) assays on recombinant receptor systems.
Structural Studies
Characterized by NMR, mass spectrometry, and circular dichroism to profile the disulfide bridge and cyclic secondary structure.
Analytical Method Validation
Serves as an identity and purity reference standard in HPLC and LC-MS method development and validation workflows.
Receptor Selectivity Profiling
Applied in multi-receptor panels to profile OXTR selectivity against vasopressin V1a/V1b/V2 receptor families.
Peptide-Chemistry Reference
Historical synthesis reference standard used in peptide-chemistry method development and teaching laboratories.
References
- [1]Lee HJ, Macbeth AH, Pagani JH, Young WS 3rd. (2009). Oxytocin: the great facilitator of life. Progress in Neurobiology, 88(2), 127-151.
- [2]Gimpl G, Fahrenholz F. (2001). The oxytocin receptor system: structure, function, and regulation. Physiological Reviews, 81(2), 629-683.
- [3]Meyer-Lindenberg A, Domes G, Kirsch P, Heinrichs M. (2011). Oxytocin and vasopressin in the human brain: social neuropeptides for translational medicine. Nature Reviews Neuroscience, 12(9), 524-538.
- [4]Guastella AJ, Einfeld SL, Gray KM, et al. (2010). Intranasal oxytocin improves emotion recognition for youth with autism spectrum disorders. Biological Psychiatry, 67(7), 692-694.
- [5]Du Vigneaud V, Ressler C, Trippett S. (1953). The sequence of amino acids in oxytocin, with a proposal for the structure of oxytocin. Journal of Biological Chemistry, 205(2), 949-957.
Disclaimer: Information provided for research reference only; not medical advice. Sold strictly for in-vitro research use.
Certificate of Analysis
Third-party verified
Every batch of Oxytocin is independently tested by an A2LA-accredited (ISO 17025:2017) laboratory using HPLC-UV/VIS for purity and identity, with a batch-specific lot number. Results are published publicly.
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Frequently
Asked
Questions
Everything on purity, paperwork, shipping and the research-use-only terms. Still stuck? Read the full FAQ.
What does research use only mean?
Every compound we supply is a reference standard intended strictly for in-vitro laboratory research. It is not a drug or a supplement, and it is not for human or veterinary use, nor for diagnostic or therapeutic use.
How is purity verified?
Every lot is assayed by HPLC at an independent, accredited third-party laboratory. We publish the resulting Certificate of Analysis and link it to the lot number printed on the vial.
Where do I find the Certificate of Analysis?
Every lot has a public, batch-linked COA. Browse them all on the COA page, or open any product page and use the COA tab for that specific compound.
How quickly do orders ship?
Orders placed before 2PM EST ship the same business day. Shipments are cold-packed where required and fully tracked.
Do you ship internationally?
We currently ship within the United States. Requests from institutional buyers outside the US are handled case by case, so contact us before ordering.
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