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For laboratory research use only — not for human or veterinary consumption
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Reference material on the compounds we supply and the science and regulation behind them — what each compound is and where it appears in the literature, how peptides are made, reconstituted, stored and analysed, and what the research use only designation actually means under UK law.

These pages are general scientific and regulatory information. They are not medical or legal advice, and they are not guidance on using any compound in a person. We do not publish dosing information, administration protocols or usage guidance of any kind.

Compound Research Overviews
Compound
BPC-157

BPC-157 is a synthetic peptide of fifteen amino acids, based on a partial sequence of a protein identified in human gastric juice. It appears extensiv…

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Compound
Retatrutide

Retatrutide is a synthetic polypeptide reported to act as an agonist at three receptors — GLP-1, GIP and glucagon. It sits within the field of increti…

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Compound
GHK-Cu

GHK-Cu is the copper(II) complex of the tripeptide glycyl-L-histidyl-L-lysine, a sequence that occurs naturally in human plasma. It appears in in-vitr…

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Compound
NAD+

Nicotinamide adenine dinucleotide (NAD+) is a coenzyme present in every living cell, where it acts as an electron carrier in redox reactions. It is on…

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Compound
MOTS-c

MOTS-c is a peptide of sixteen amino acids encoded within mitochondrial DNA rather than the nuclear genome. It belongs to the small class of mitochond…

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Compound
Melanotan 2

Melanotan 2 is a synthetic cyclic peptide analogue of alpha-melanocyte-stimulating hormone (alpha-MSH), described as a non-selective agonist across se…

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Compound
DSIP

DSIP (delta sleep-inducing peptide) is a naturally occurring peptide of nine amino acids, first isolated from cerebral venous blood in 1977. Its mecha…

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Compound
PT-141

PT-141, also known as bremelanotide, is a synthetic cyclic peptide and a metabolite of Melanotan 2, described as an agonist at melanocortin receptors.…

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Compound
TB-500

TB-500 is a synthetic peptide corresponding to an active region of thymosin beta-4, a naturally occurring protein involved in regulating actin. It app…

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Reference Guides
Comparison
BPC-157 vs TB-500

How the two regenerative-research peptides differ by origin and research pathway, and why they're often studied together.…

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Comparison
Retatrutide vs Semaglutide vs Tirzepatide

How the three incretin peptides differ by receptor target — triple vs dual vs single agonism — and their regulatory status.…

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Guide
What Is Bacteriostatic Water? A Laboratory Guide

Bacteriostatic water is sterile water containing 0.9% benzyl alcohol as a preservative. In a laboratory setting it is used as a solvent for reconstitu…

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Guide
How To Read a Peptide Certificate of Analysis

A certificate of analysis (COA) is a laboratory report on one specific batch of material. It typically reports purity by HPLC, identity by mass spectr…

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Guide
How Peptide Purity Is Tested

Peptide purity is normally established by high-performance liquid chromatography (HPLC), which separates a sample into its components and reports the …

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Guide
Why Research Peptides Are Lyophilised

Lyophilisation — freeze-drying — removes water from a peptide by sublimation under vacuum, leaving a dry cake or powder. Peptides degrade far faster i…

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Guide
What 'Research Use Only' Means in the UK

'Research use only' means a material is supplied as a reference material for laboratory research, and is not a medicinal product. It is not a disclaim…

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Guide
How To Reconstitute a Research Peptide

Reconstitution is the process of dissolving a lyophilised (freeze-dried) peptide back into solution with a solvent such as bacteriostatic water. Done …

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Guide
How To Store Research Peptides

Lyophilised peptides are generally stored sealed, cold and protected from light. Once reconstituted into solution a peptide is far less stable, and is…

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Guide
What Are Peptides?

A peptide is a short chain of amino acids linked by peptide bonds. Peptides sit between individual amino acids and larger proteins on a spectrum of si…

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Guide
How Research Peptides Are Made

Most synthetic research peptides are made by solid-phase peptide synthesis (SPPS), in which amino acids are added one at a time to a growing chain anc…

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Guide
Peptide Solubility and Choosing a Solvent

A peptide's solubility depends on its amino acid sequence — its balance of charged, polar and hydrophobic residues. Most research peptides dissolve re…

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Guide
Handling Research Chemicals Safely

Research chemicals should be handled only by qualified persons in an appropriate laboratory setting, using suitable personal protective equipment, a c…

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Guide
Are Research Peptides Legal in the UK?

In the UK, research peptides can be lawfully bought and sold as reference materials for laboratory research, provided they are not marketed or supplie…

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Important: All products supplied by Omni Peptides are sold strictly as reference materials for laboratory research use by qualified persons. They are not for human or veterinary consumption. Read our full Research Use Disclaimer.