Oxytocin

Nonapeptide central to social and endocrine signaling research.

Nonapeptide central to social and endocrine signaling research
Purity ≥ 92.3% (HPLC)
Lot-specific COA ships with every order

Secure checkout · Free shipping over $60 · Damage protected

Order within

3rd-party tested

Free ship over $60

Damage protected

The why

Oxytocin is a nine-residue neuropeptide studied for its role in smooth-muscle contraction, affiliative behavior models and hypothalamic-pituitary signaling.

Key ingredients

Oxytocin 10 mg
Sterile lyophilized powder

Certificate of Analysis

Every lot, tested and documented.

Independent third-party analysis on every Oxytocin lot by Vanguard Laboratory (A2LA accredited). Purity, quantity, identity, heavy metals, endotoxins and bioburden. The results below are pulled straight from the signed report.

Verified by Vanguard HPLC-UV/VIS ICP-MS USA-shipped

Vanguard Laboratory · Level 3 verified

Oxytocin

Open signed COA

Lot number

OXT.10.A

Laboratory ID

V260617-22016

Date reported

6/25/2026

Report number

V260617-22 016

Chromatographic purity

92.30%

Quantity per vial

9.62 mg

Endotoxins (LAL)

Pass - <5.00 EU/mg

Bioburden (USP 61)

Pass - No Growth Detected

Heavy metals (ICP-MS)

Not detected

Signed by

Dustin Newman, Laboratory Director

Values above are transcribed from the Vanguard Laboratory report for lot OXT.10.A. Heavy metals reported as ND (not detected) for arsenic, cadmium, lead and mercury. Open the signed PDF for chromatograms and the full analyte table.

What we test

Purity + identity
92.30%
HPLC-UV/VIS chromatographic purity against a reference standard.
Quantity
9.62 mg
Confirms the vial holds at least what the label says.
Heavy metals
Not detected
ICP-MS screen for arsenic, cadmium, lead and mercury.
Endotoxins + bioburden
Pass - <5.00 EU/mg
LAL endotoxin assay and USP 61 microbial count screening.