Oxytocin Testing Services
Oxytocin is a nonapeptide hormone with critical roles in childbirth, lactation, and social bonding. It is widely studied in compounded formulations (intranasal, sublingual, injectable) where identity, purity, and disulfide bridge integrity are essential.
Research Applications
Common research areas for Oxytocin
- Social neuroscience
- Reproductive research
- Compounded formulation QC
- Behavioral research
Peptide Information
Molecular details and sample requirements
Sequence / Structure:
Cys-Tyr-Ile-Gln-Asn-Cys-Pro-Leu-Gly-NH2 (cyclic)
Molecular Weight
1007.19 g/mol
Formula
C43H66N12O12S2
Recommended Purity
≥95%
Sample Size
0.5-1 mg lyophilized
Our Oxytocin Testing Services
Comprehensive analytical testing to ensure Oxytocin quality and purity
Purity Testing
HPLC analysis to verify Oxytocin purity levels
Identity Verification
Mass spectrometry to confirm molecular identity
Third-Party Verification
Independent COA verification for Oxytocin
Certificate of Analysis
Official US laboratory documentation
Ready to test your peptides?
Send your peptide name, sample count, and the tests you need. We return a fixed-price quote, usually within one business day.
- validated analytical methods, independent of any supplier
- 9-11 business day standard turnaround
- Traceable COA with chromatograms and method parameters
Oxytocin Testing Methodology
Our analytical workflow for Oxytocin follows USP <1225> guidance for validated chromatographic methods. Each lot is processed by a credentialed analyst with documented chain of custody.
Step 1
Sample intake & chain of custody
Your Oxytocin sample (0.5-1 mg lyophilized) is logged at our Florida lab with a unique ID, photographed, and stored at -20 °C until analysis.
Step 2
Reverse-phase HPLC purity
Oxytocin is dissolved in mobile phase and run on a C18 column with a water/acetonitrile gradient containing 0.1% TFA. UV detection at 214 nm quantifies the main peak and any related impurities.
Step 3
LC-MS identity confirmation
An aliquot is analyzed by liquid chromatography-mass spectrometry. The observed monoisotopic mass is compared against the theoretical molecular weight (1007.19 g/mol) for Oxytocin to confirm identity.
Step 4
Impurity profiling & reporting
Related substances, truncations, and oxidation products are quantified. Findings are compiled into a signed Certificate of Analysis with chromatograms, mass spectra, and analyst interpretation.
Oxytocin Purity Notes
Recommended research-grade purity for Oxytocin is ≥95%. Lot-to-lot variation is common with solid-phase synthesis, so independent verification matters.
Common impurities to watch
- Truncated sequences from incomplete coupling
- Deletion peptides missing one or more residues
- Oxidation of methionine, tryptophan, or cysteine
- Residual TFA, acetate, or solvent counter-ions
- Aggregates and dimers from improper storage
What our COA confirms
- Main peak purity by HPLC area %
- Observed vs theoretical mass (1007.19 g/mol)
- Named impurities ≥ 0.1% area
- Net peptide content where applicable
- Method, column, and instrument metadata
Oxytocin Handling, Storage & Safety
Guidance below is for laboratory and research personnel only. Oxytocin is supplied for research use and is not intended for human or veterinary use.
Storage
Store lyophilized Oxytocin at -20 °C, protected from light and moisture. After reconstitution, aliquot and store at -80 °C; avoid repeated freeze-thaw cycles.
Reconstitution
Reconstitute in bacteriostatic or sterile water in a clean environment. Allow vials to reach room temperature before opening to prevent moisture condensation on the powder.
PPE & shipping
Handle with gloves, lab coat, and eye protection. Ship samples to ACS overnight on dry ice or cold packs in a rigid, leak-proof container with a packing slip referencing your quote.
This page is informational and does not constitute medical advice. Consult your institution's safety officer and SDS before working with Oxytocin.
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