Peptides & Research Compounds

Vinnix research products

BPC-157

15-amino-acid peptide

10 mg20 mg

GHK-Cu

Copper tripeptide complex

100 mg

MOTS-c

Mitochondrial-derived peptide

10 mg

Tesamorelin

Modified GHRH (1-44) analogue

10 mg

Retatrutide

Investigational 39-residue peptide

10 mg20 mg30 mg

Tirzepatide

Modified 39-residue peptide

10 mg20 mg30 mg

Semaglutide

Modified GLP-1 analogue

10 mg20 mg30 mg

Glutathione

Tripeptide, γ-Glu-Cys-Gly

600 mg

CJC-1295 + Ipamorelin

Two-peptide product

10 mg

Selank + Semax

Two-heptapeptide product

20 mg

GLOW Blend

GHK-Cu, TB-500, BPC-157

70 mg

KLOW Blend

Multi-component product

80 mg

Wolverine Blend

BPC-157 and TB-500

20 mg

Compound reference library

Identity and molecular information for related compounds that Vinnix does not sell individually.

01 Explore Peptide Compounds

The Vinnix peptide catalog treats each research peptide as its own compound, with its own specifications and its own documentation. That's deliberate. Peptides are molecules made of amino acids linked by peptide bonds, and individual peptides differ in sequence, chain length, structure and chemical behavior.

So instead of one category of interchangeable products, you get a dedicated page per compound, built around its identity. A listing tells you what the material is, how much is supplied, which batch it came from and which reports describe that batch. The background science lives in the Research Library, which keeps product pages focused on facts you can check.

Each compound profile is designed to give clear, structured information about the named substance: verified identifiers, molecular characteristics and links to related research resources.

02 Research Peptides for Sale: The Current Catalog

Here are the research peptides currently offered, single compounds first, then blends. Strength and SKU come from the Vinnix product list. Batch numbers, storage details and the amount of each compound in a blend are added to the product page once they're verified. We don't publish estimates in the meantime. General handling background is in peptide storage.

Three incretin-class research peptides, retatrutide, tirzepatide and semaglutide, have their own information pages with regulatory background. For the full A to Z list, including compounds that only appear inside blends, go to the Compound Library.

03 What Are Peptides?

A peptide is a chain of amino acids joined by peptide bonds. The order of those amino acids, the sequence, decides which peptide it is. Change one residue, or swap two positions, and you've got a different molecule with a different mass and different chemistry.

Sizes vary a lot, from two residues to several dozen. In this catalog, glutathione and GHK-Cu are tripeptides, BPC-157 has 15 residues and tesamorelin has 44. Many research peptides are synthetic analogues of fragments of larger natural proteins or hormones ^[1]. Some add non-standard residues, a capped C-terminus or an attached chemical group, and those modifications are part of the identity, so they show up in the specifications.

"Peptide" covers so many different molecules that a finding reported for one tells you nothing about another. That's the main reason each compound gets its own page. For a longer introduction, read understanding peptide research, what are peptides and peptides vs proteins.

04 Peptides and Amino Acids

Amino acids are the units peptide chains are built from, so they're the first thing to understand when you read a peptide specification. Each one has an amino group, a carboxyl group and a side chain. When the carboxyl group of one amino acid joins the amino group of the next, a molecule of water is released and a peptide bond forms.

Biology encodes twenty amino acids. Synthetic research peptides can go beyond that, with D-amino acids or modified residues such as aminoisobutyric acid (Aib); ipamorelin, for example, contains Aib and two D-configured residues. More on the amino acids page and in the article on peptide bonds.

05 Understanding Peptide Sequences

A peptide sequence lists a chain's amino acids in order from the N-terminus to the C-terminus. On a research peptide listing, it's the single most useful identifier. You'll see it in one-letter code, such as GEPPPGKPADDAGLV for BPC-157, or in three-letter code, such as Gly-Glu-Pro.

Vinnix compound pages show the sequence next to the molecular formula, molecular weight and CAS number, each checked against PubChem ^[2]. Some names can point to more than one sequence. TB-500 is the obvious case, and its profile says so and explains what a product record needs to state. Notation is covered in detail in the peptide sequences guide.

06 Peptide Testing & Analysis

Peptide testing uses different methods for different questions: mainly, is this the expected molecule, and how much of the sample is that molecule? HPLC separates a sample's components by chromatography. Mass spectrometry analyzes ions by mass-to-charge ratio. They give you different information, and one can't stand in for the other.

A purity figure alone doesn't confirm identity, and an identity result doesn't tell you purity. Read both, then check that the batch on the report matches the batch on your product. The peptide testing guide explains each method, and HPLC vs mass spectrometry puts them side by side.

07 How to Evaluate Research Peptides Before You Order

Comparing peptides for sale across suppliers? Judge each listing by the information it gives you, not the language wrapped around it. Below is the checklist Vinnix holds its own pages to, and our guide to sourcing research peptides goes further.

1. Product identity. The listing should name the compound clearly and, where possible, give its sequence or another identifying specification. If the name is ambiguous, you can't evaluate the product.
2. Quantity and specifications. The amount of material and the SKU should be stated plainly, not buried in marketing copy.
3. Batch identification. A batch or lot number is what links the physical product to the paperwork that's meant to describe it.
4. Analytical documentation. Look for the method used, sample identification, testing laboratory, date and reported values.
5. What the test shows. HPLC and mass spectrometry answer different questions. One number rarely tells the whole story.
6. Disclosures. A research product should state its intended use plainly, on the listing itself.
7. Marketing is not evidence. Published research belongs in the primary literature, labeled by study type. Product copy can't replace it.

08 Batch Documentation for Research Peptide Listings

Different analytical methods tell you different things about a sample. Chromatographic methods help characterize the components of a mixture, while mass spectrometry gives information relevant to molecular identification. Where available, Vinnix documentation is linked to the corresponding product or batch.

Each Vinnix research peptide will link to its batch documentation, on the product page or in the COA Library, as each report is published, so you can check what was tested before you order and after.

A certificate of analysis belongs to one batch. A useful one names the product and batch, the laboratory, the test date, the methods (usually HPLC for purity and mass spectrometry for identity) and the reported values. When a new batch's report isn't published yet, the product page says so plainly. It won't recycle an older report.

Start with what a certificate of analysis is, then work through each field with how to read a COA. As reports are released, each one goes into the Vinnix COA Library, searchable by product, SKU and batch.

09 Research and Educational Resources

The Vinnix Research Library covers the background behind every listing: peptide bonds, amino-acid sequences, molecular mass, chromatographic testing, certificates of analysis and the terminology used in scientific research. Good places to start are peptide bonds, the peptide sequences guide and HPLC testing.

REFScientific references

1. Muttenthaler M, King GF, Adams DJ, Alewood PF. Trends in peptide drug discovery. Nat Rev Drug Discov. 2021;20(4):309-325. PubMed 33536635
   review
2. Kim S, Chen J, Cheng T, et al. PubChem 2023 update. Nucleic Acids Res. 2023;51(D1):D1373-D1380. PubMed 36305812
   database