Oxytocin10mg research peptide · Canada
Buy 2 and save $16.00 — 10% off every unit
- Ships from Vancouver — no customs, no duties
- Dispatched in 1–2 business days · tracked & insured
Add $220.01 more for free shipping
Key facts
- Compound:
- Oxytocin
- Purity:
- ≥99%, verified by HPLC
- Tested by:
- independent third-party lab (HPLC purity and measured content)
- CAS number:
- 50-56-6
- Molecular weight:
- 1007.19 g/mol
- Certificate of analysis:
- available on request · members-only lab results
- Ships from:
- Vancouver, BC — typically 2–5 business days, tracked and insured, no customs
- Intended use:
- in vitro laboratory research only — not for human or veterinary consumption
Page last updated
Oxytocin is the famous “love hormone,” a tiny nine-amino-acid peptide the body makes naturally and one of the most studied molecules in behaviour research. This is lab-made oxytocin as a freeze-dried powder in a 10 mg vial. Prefer it ready-made? See our oxytocin nasal spray.
Buy Oxytocin in Canada direct from Popular Peptides. One 10 mg vial, ≥99% purity, CAS 50-56-6, molecular weight 1007.19 g/mol. Tested by an independent lab for purity and content (HPLC), and the lab report (COA) for your batch is available on request. Tracked, insured delivery from Vancouver, BC — by Canada Post Xpresspost, usually 1 to 4 business days, with no customs step and no brokerage fee.
Sold as a laboratory research material only, for in vitro use. It isn’t a medicine and isn’t meant for people or animals.
Primary literature
- Oxytocin increases trust in humans — Nature, 2005
Kosfeld et al. Trust-game study comparing behaviour after a single dose of intranasal oxytocin versus placebo.
- Intranasal Oxytocin in Children and Adolescents with Autism Spectrum Disorder — New England Journal of Medicine, 2021
Sikich et al. 24-week randomised, placebo-controlled trial; found no significant improvement in social or cognitive functioning versus placebo.
Cited for research context. A citation is not a claim that this compound is safe, effective, or approved for any use.
Research Use Only. This compound is a laboratory material for in vitro research. It is not a medicine and is not for human or veterinary use. If you’re looking for help with your health, please speak with a doctor or pharmacist.
New to research compounds? Start here. Buying in Canada: why domestic means no customs. Checking quality: how to read a COA.
What is Oxytocin? Oxytocin at a glance
In short: Oxytocin is $79.99 CAD at Popular Peptides Canada, ships from Vancouver with no customs, and usually arrives in 1–4 business days.
- What it is
- Oxytocin is the famous “love hormone,” a tiny nine-amino-acid peptide the body makes naturally and one of the most studied molecules in behaviour research. This is lab-made oxytocin as a freeze-dried powder in a 10 mg vial.
- Price
- $79.99 CAD. Prices are in Canadian dollars, so there’s no exchange-rate surprise.
- Size
- 10mg
- Purity
- ≥99%, tested by an independent lab (HPLC purity and content)
- Ships from
- Vancouver, BC, to anywhere in Canada. It never crosses a border, so there’s no customs and no brokerage fee.
- Delivery
- Dispatched in 1–2 business days by Canada Post Xpresspost, tracked and insured. Usually 1–2 days in BC, 2–3 on the Prairies and to major Ontario and Québec cities, 2–4 in Atlantic Canada.
- Shipping cost
- Free over $300 CAD, otherwise a flat $20.
- Lab report
- Available on request. Lab results are kept in our members-only area.
- Pay with
- Visa, Mastercard, Apple Pay, Google Pay or Interac e-Transfer (an extra 10% off by e-Transfer).
- Sold for
- Laboratory research only. It isn’t a medicine and isn’t meant for people or animals.
New to this? Our plain-language guide explains everything from lab reports to delivery, and our Canada vs imported guide shows why ordering inside Canada is simpler.
Oxytocin — compound background
Cyclic nonapeptide with intramolecular disulfide bridge
Oxytocin was the first peptide hormone to be chemically synthesised, by Vincent du Vigneaud in 1953 — work that won the 1955 Nobel Prize in Chemistry and effectively founded the field of peptide synthesis. Every compound in this catalogue is downstream of that achievement.
Solubility & reconstitution
Readily water-soluble. The structurally decisive feature is not solubility but the disulfide bridge between Cys1 and Cys6, which closes a six-residue ring and holds the molecule in its active conformation. Everything about oxytocin handling follows from protecting that bond.
Storage
Sealed at -20 °C. The dry state is markedly more stable than solution for this compound — the difference is larger than for most peptides here. Refrigerate at 2–8 °C and use promptly. Oxytocin is the least solution-stable compound in this catalogue; its aqueous stability is strongly pH-dependent, with an optimum in the mildly acidic range around pH 4–5.
Shorter than most: commonly worked with within 1–2 weeks at 2–8 °C.
Stability
Oxytocin's poor solution stability is a documented and long-standing formulation problem — the reason its pharmaceutical preparations are refrigerated and acetate-buffered. Treat neutral-pH aqueous storage as the worst case, not the default.
Reading the Certificate of Analysis
Confirm the molecular ion at 1007.2 Da for the intact cyclic monomer. The critical additional check is dimer content: a species at roughly twice the monomer mass indicates intermolecular disulfide exchange. Purity by HPLC alone can look acceptable while dimer accumulates, so the mass spectrum matters here more than for linear peptides.
Background and handling information is educational, for in-vitro laboratory research use only — not medical advice, dosing, or usage guidance, and not a description of use in humans or animals.
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Oxytocin laboratory reference
Oxytocin is cyclic nonapeptide with intramolecular disulfide bridge. Handling requirements follow from that chemistry rather than from generic peptide guidance — the pages below cover each aspect specifically for this compound.
Lyophilized and reconstituted storage conditions, plus the practical working window.
Diluent selection, dissolution behaviour, and the calculator preset for this compound.
Which solvents work, why, and what abnormal dissolution behaviour indicates.
The specific chemical routes by which this molecule breaks down, and how to limit each.
Which assays are informative for this molecule, and what to actually check on its COA.
Compound-specific bench practices, and the errors most often made with this molecule.
What to inspect on arrival, and which conditions actually warrant rejecting a vial.
Questions specific to this compound — structure, chemistry, and common misconceptions.
Oxytocin compared with
Reference content is educational laboratory-handling information for in-vitro research use only — not medical advice, not usage guidance, and not a protocol.