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Oxytocin

Name: Oxytocin
SKU: OT5-OXYTOCIN
Availability: InStock

Price range: $39.99 through $149.99

Oxytocin is a cyclic nonapeptide (nine amino acids) with the molecular formula C₄₃H₆₆N₁₂O₁₂S₂ and a molecular weight of 1,007.19 g/mol. Its amino acid sequence — Cys-Tyr-Ile-Gln-Asn-Cys-Pro-Leu-Gly-NH2 — forms a ring through a disulfide bond between the two cysteine residues at positions 1 and 6. First synthesized in 1953, it was the first peptide hormone ever produced in a laboratory. Oxytocin is classified as both a neuropeptide and a peptide hormone, naturally produced in the hypothalamus. It is supplied as a white to off-white lyophilized powder, highly soluble in water, and identified by CAS number 50-56-6. This product is strictly for research purposes only.

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WHOLESALE KIT — IMPORTANT ORDER INFORMATION

This is a wholesale 10-vial program. Kits are fulfilled directly through our international manufacturing and fulfillment network rather than from standard retail inventory, allowing us to offer genuine bulk pricing.

Please review the following before adding a kit to your cart:

Longer processing time: Wholesale kit orders may require 5–10 business days of processing before carrier transit begins. This is longer than standard single-vial orders.
Ships internationally: Wholesale kits are fulfilled from Hong Kong and shipped worldwide. International transit and customs processing may add additional delivery time.
Wholesale packaging: Vials may arrive without individual retail packaging or retail-style labels. Product identification and batch information should be verified using your order details and the applicable COA / batch documentation.
Lyophilized powder appearance may vary: Freeze-dried powder may shift, fragment, or separate during transportation. Changes in the physical appearance of the lyophilized puck are not, by themselves, considered a product defect.

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Required Confirmation

I understand that this is a wholesale 10-vial kit fulfilled from Hong Kong, that processing and delivery take longer than standard local-stock orders, that wholesale packaging may differ from retail packaging, and that the physical appearance of lyophilized powder may change during transit.

YOU MUST ACCEPT THE WHOLESALE KIT SHIPPING NOTICE BEFORE ADDING THIS PRODUCT TO YOUR CART.

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Description
Additional information

✓ Third-Party Lab Tested

Certificate of Analysis

Independent laboratory testing confirms purity and composition of this research peptide.

Endo Passed

99.260%

Purity

A2926021

Batch

August 2026

Date

View Certificate →

Overview

Oxytocin is a cyclic nonapeptide — a chain of nine amino acids arranged in a ring shape, held together by a disulfide bond between two cysteine residues. Its sequence is Cys-Tyr-Ile-Gln-Asn-Cys-Pro-Leu-Gly-NH2, with a molecular weight of 1,007.19 g/mol and the formula C₄₃H₆₆N₁₂O₁₂S₂. The ring structure formed by the disulfide bridge gives the molecule its characteristic stability.

Oxytocin was first isolated and synthesized in 1953, making it the first polypeptide hormone ever synthesized in a laboratory. The compound is naturally produced in the hypothalamus region of the brain and is classified as both a neuropeptide and a peptide hormone. In its research-grade form, oxytocin appears as a white to off-white lyophilized powder that is highly soluble in water.

This product is strictly for research purposes only.

PubChem Reference: View compound profile on NIH PubChem

This product is strictly for research purposes only. Not approved for human or animal use.

Key Characteristics

MOLECULAR PROFILE

Formula: C₄₃H₆₆N₁₂O₁₂S₂

Weight: 1007.19 g/mol

CAS: 50-56-6

Structure: Cys-Tyr-Ile-Gln-Asn-Cys-Pro-Leu-Gly

PHYSICAL PROPERTIES

Form: White to off-white lyophilized powder

Solubility: Highly soluble in water

Alternative Names: α-Hypophamine, Ocytocin, Syntocinon

Storage: Cool, dry place away from light

Additional information

Weight	0.08 lbs
Dimensions	0.87 × 1.18 × 0.87 in
Peptide	Oxytocin Acetate
Strength	2mg, 5mg, 10mg
CAS Number	6233-83-6
PubChem CID	12004215
Purity	≥99% (third-party HPLC and mass spectrometry verified)
Form	Lyophilized powder
Storage	Store at −20°C (−4°F) for long-term storage or 4°C (39°F) for short-term storage; avoid repeated freeze-thaw cycles.
Testing	Batch-specific COA included
Origin	Manufactured in the US
Purchase Option	Fast Stock — From 1 Vial, Global — 10 Vial Kit