Nashville, Tennessee · Est. 2026

Research peptides,
properly handled.

Sourced from an established peptide synthesis facility, held at −20°C until the moment they're packed, and shipped in protective packaging from Nashville.

Browse the catalog How we handle stock
—
Compounds in stock
−20°C
Cold storage
US
Domestic shipping
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Consumables

Lab supplies

Bacteriostatic water for laboratory solution preparation, stocked in two sizes alongside the catalog.

Handling

Stored properly, shipped carefully

Zyrna Research is a supplier, not a testing lab. Material comes from an established peptide synthesis facility with the manufacturer's certificate of analysis, lots in stock are sent for independent testing where we can, and our job is to keep everything in the condition it arrived in until it reaches you. About Zyrna Research · Certificates · FAQ

  • Manufacturer's certificate of analysis available on request
  • Lyophilised stock held at −20°C, protected from light
  • Lyophilised powder is shelf-stable in transit — no refrigeration needed
  • Sealed, lot-numbered vials — never repackaged or relabelled
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Reference

Guides

How to read a certificate, how peptides are made and stored, and how the compounds in each group compare. Written from the papers cited on the product pages, not from marketing.

  • CJC-1295 With and Without DACWhy two products share the CJC-1295 name: what the Drug Affinity Complex is, how it turns minutes of half-life into days, and which form the trials used.
  • Cognitive and Longevity Peptide ComparisonSemax, Epithalon, MOTS-c and NAD+ compared: what each is, who developed it, what the cited studies tested, and how far the human evidence goes.
  • GLP-1 Family ComparisonSemaglutide, tirzepatide, retatrutide and cagrilintide side by side: receptor targets, developer, regulatory status and the headline trial results.
  • Growth Hormone Secretagogue ComparisonCJC-1295 with DAC, ipamorelin and tesamorelin side by side: receptor, developer, half-life, regulatory status and what the published trials measured.
  • Repair and Recovery Peptide ComparisonBPC-157, thymosin β4 (TB-500), GHK-Cu and KPV compared: where each comes from, what the cited studies tested, and how far the human evidence goes.
  • Bacteriostatic Water vs Sterile WaterWhat bacteriostatic water is, what 0.9% benzyl alcohol does to shelf life, when sterile water is the better diluent, and where the 28 days comes from.
  • How Research Peptides Are MadeSolid-phase peptide synthesis explained: how a sequence is built one residue at a time, where impurities come from, and why TFA is in the vial.
  • How to Read a Peptide Certificate of AnalysisWhat each line on a peptide certificate of analysis means: lot number, HPLC purity, mass spec identity, net peptide content, and the red flags to check.
  • Lyophilised Peptide Storage and StabilityHow to store research peptides: −20°C for lyophilised powder, 2–8°C for solutions, why freeze-thaw and light matter, and which residues degrade first.
  • Peptide Reconstitution CalculatorConcentration math for reconstituting lyophilised peptides: mg/mL from vial mass and diluent volume, µg per 0.1 mL and 0.01 mL, with worked examples.
  • Reading an HPLC ChromatogramHow to read the HPLC trace behind a peptide purity figure: the axes, the main peak and the small ones, and why area percent is not mass percent.
  • Why Peptides Are Freeze-DriedWhat lyophilisation is, why research peptides ship as a freeze-dried cake rather than a solution, what a good cake looks like and what the powder contains.
  • Melanocortin Peptides: Melanotan II and KPVα-MSH and its analogues: what Melanotan II and KPV are, how the melanocortin receptors work, and which relatives of Melanotan II reached approval.
  • Peptide Reference TableCAS number, molecular formula, molecular weight and amino-acid sequence for every compound in the Zyrna Research catalog, in one table.
  • Research Peptide GlossaryPlain definitions of the terms on our product pages and guides: acylation, Aib, COA, DAC, deamidation, HPLC, lyophilisation, net peptide content, TFA salt.
  • Research library34 peer-reviewed papers behind the compounds sold here, each verified on PubMed and summarised in plain language: 13 human studies, 8 animal studies, 3
Research use only Zyrna Research supplies materials to qualified researchers, laboratories and institutions. Products are not drugs, foods or cosmetics, are not approved for human or veterinary use, and must not be introduced into humans or animals. Purchasers assume full responsibility for safe handling, storage and compliance with all applicable regulations.