Chonluten: Reference Overview and Reconstitution Notes

Chonluten is a man-made short peptide (a tiny chain of three protein building blocks) belonging to the Khavinson group of bioregulators. It is studied in respiratory tissue research and is not FDA-approved. It is a research-only material.

Chonluten

What it is

Chonluten is a man-made tripeptide (a very short peptide built from just three amino acids, the building blocks that make up all proteins). Its three-amino-acid sequence is Glu-Asp-Gly (EDG). It is also known as T-34.

It belongs to the Khavinson family of peptide bioregulators (small molecules studied for how they may send signals inside cells). This family was identified at the St. Petersburg Institute of Bioregulation and Gerontology. Chonluten is the man-made, fixed-sequence version of Bronchogen, a peptide preparation originally drawn from bronchial (airway) tissue.

Research context and categorization

Chonluten is grouped under the Khavinson bioregulators. This is a class of short peptides discussed for how they may affect which genes are switched on or off in specific tissues. Within that family, it is classed as a bronchial or respiratory bioregulator, meaning research discussion focuses on lung and airway tissue.

Investigational Scope

In simple terms, Chonluten is studied to understand how short peptides may change gene activity in respiratory epithelial models (lab models of the thin cell layer that lines the airways). Research often involves inflammation, oxidative stress (cell damage caused by harmful unstable molecules), and how quickly airway cells multiply.

Some early-stage animal-model reports look at it in relation to the protective lining of the airways in respiratory conditions. All of these uses are investigational only, meaning they are still being studied.

Key point: Chonluten is not FDA-approved. Research on it remains at the early lab and animal stage. None of the respiratory effects discussed here are confirmed or approved.

Chonluten is not FDA-approved. The work sits at the early lab and animal stage. None of the effects discussed should be read as confirmed, established, or approved benefits.

Status

• Regulatory status: Research-only. Chonluten is not FDA-approved for any use. It is supplied and handled strictly as a laboratory research material. Published work on it is at the early, investigational stage only.
• Sport status: Chonluten is not listed by name on the WADA Prohibited List (the global list of substances banned in sport). However, because it is a peptide that no government body has approved for human use, it could fall under the S0 Non-Approved Substances category. This is a catch-all rule WADA uses for experimental and unapproved compounds. Athletes should treat its status as unsettled and check the current official list.

Reconstitution notes (general)

Chonluten typically arrives as a lyophilized (freeze-dried) powder. Before lab use, it must be reconstituted, meaning mixed back with liquid. The working concentration is a simple math problem: divide the milligrams of peptide in the vial by the milliliters of bacteriostatic water (water with a small added preservative that slows bacterial growth) you add.

For example, a 20 mg vial mixed with 2 mL of water gives 10 mg/mL. The same vial mixed with 3 mL gives about 6.67 mg/mL. To work out a target concentration or fill volume for any vial size, use the calculator at peptide calculator.

Dilution and handling notes (compound-specific)

Chonluten is commonly sold in 20 mg vials. A typical reconstitution volume is roughly 2 mL to 3 mL of bacteriostatic water. This places the working concentration between about 6.67 mg/mL and 10 mg/mL.

The volume you choose is mostly about convenience for drawing small research portions into a U-100 syringe. It is not about reaching a solubility limit, since Chonluten dissolves in water very easily.

Solubility and Mixing

Because Chonluten is such a short tripeptide, it is highly water-soluble (it dissolves in water quickly and completely). It typically produces a clear, colorless liquid. It does not gel, cloud over, or slowly settle out the way some larger or water-repelling (hydrophobic) peptides can when mixed at high concentrations.

Because it dissolves so readily, rough or forceful mixing is not needed and can actually create problems.

Recommended Preparation Steps

Good technique matters more here than fighting stubborn solubility. Think of it like dissolving a pinch of salt into a glass of water: a gentle swirl is all you need. To prepare the solution correctly:

1. Add the water slowly down the inner wall of the vial rather than squirting it straight onto the powder.
2. Mix by gently swirling or rolling the vial between your palms. Do not shake it. Shaking whips air into the liquid and creates foam, which makes the fill level harder to read accurately.
3. Let the vial rest for a short time after mixing so any bubbles clear and the powder fully dissolves.
4. Keep the material out of direct light. If a batch will not be used right away, split it into single-use portions (called aliquots) to avoid repeated freeze-thaw cycles, which can break down the peptide over time.

Handling and storage

Follow these storage steps to keep the compound stable:

• Store the reconstituted vial in a refrigerator at 2 to 8 degrees Celsius and keep it away from direct light.
• Wipe the rubber stopper with an alcohol swab before each puncture.
• Write the mix date on the vial label so you always know how old the solution is.
• Follow the general four-week refrigerated window that is commonly cited for reconstituted peptides.
• Discard any vial that turns cloudy or discolored, or that shows floating particles.

Related reading

• CJC-1295
• Cortagen
• Crystagen
• How Reconstitution Works
• How Long Does a Reconstituted Vial Last?

Tools and supplies

• peptide calculator
• Bacteriostatic Water 30 ml
• Gansulin Metal Reusable Pen
• 3 ml Glass Cartridges (10-pack)
• Complete Starter Kit

Reminder: research and educational reference only. Preppin Peppers sells hardware and materials, not peptides. Not medical, dosing, or health advice, not evaluated by the FDA, and not intended for human or animal use.

Frequently asked questions

What is Chonluten (T-34) and what does research on it focus on?

Chonluten (T-34) is a synthetic tripeptide with sequence Glu-Asp-Gly, classed as a Khavinson bronchial bioregulator. Lab research examines gene expression, inflammation, and oxidative stress in respiratory epithelial models.

How is lyophilized Chonluten reconstituted for laboratory use?

Add bacteriostatic water to the freeze-dried vial and swirl gently. Working concentration = vial mass (mg) ÷ solvent volume (mL). Example: 20 mg + 2 mL = 10 mg/mL. Use a peptide calculator for other vial sizes.

Is Chonluten FDA-approved and what is its WADA status?

Chonluten is not FDA-approved and is handled as a research-only material. It is not named on the WADA Prohibited List but may qualify under the S0 Non-Approved Substances catch-all; athletes should verify current official guidance.

What the research community gets wrong about Chonluten

• It is not the same molecule as Bronchogen. Chonluten is the tripeptide Glu-Asp-Gly (three amino acids). Bronchogen is usually described as a longer peptide with a different sequence (Ala-Glu-Asp-Leu). People swap the two names on labels and in notes, so always check the sequence on the certificate of analysis rather than trusting the trade name alone.
• Easy to dissolve does not mean easy to keep. Because it is so short and water-soluble, Chonluten mixes into a clear liquid fast. Solubility and stability are separate things. A solution that dissolved perfectly can still lose intact peptide over time from light, warmth, and repeated freeze-thaw. Clean mixing tells you nothing about how much is left a week later.
• The gene-activity descriptions are early-stage, not settled science. Much of the writing about how this peptide class may change which genes switch on comes from early laboratory and animal reports, a large share of them published in Russian gerontology journals. Treat those as investigational starting points to test at the bench, not as confirmed facts.
• A clear, colorless vial is not proof of concentration. Clarity only tells you the powder went into solution. It does not tell you the exact amount of peptide in the vial or how much survived shipping and storage. If a number matters for your work, measure it (for example by weighing or by an assay), do not assume it from the label.
• "Not on the banned list" is not the same as "cleared." Chonluten is not named on the WADA Prohibited List, but as an unapproved peptide it can still fall under a catch-all category. Handle it strictly as a research material and check current official guidance rather than reading the missing name as a green light.

From our bench: If you reconstitute a Chonluten vial, record the real numbers from your own run instead of the label defaults. Note the vial mass in milligrams, the exact volume of bacteriostatic water you added, the concentration those two give you, and roughly how many seconds of gentle swirling it took to reach a clear solution. Then check the vial again after a few days of refrigerated storage and write down whether it stayed clear or showed any haze or particles. Send us your figures and we will add real bench observations to this page.

Sources

1. Bacteriostatic Water for Injection, USP , FDA/DailyMed label (0.9% benzyl alcohol)
2. Duerkop et al., Biotechnol J 2018 , Impact of Cavitation, High Shear Stress and Air/Liquid Interfaces on Protein Aggregation
3. Sigma-Aldrich (Merck) , Handling and Storage Guidelines for Peptides and Proteins
4. PubChem CID 194641 , Glutamyl-aspartyl-glycine (Glu-Asp-Gly tripeptide), National Library of Medicine
5. ChEBI CHEBI:162780 , Glu-Asp-Gly (formula C11H17N3O8, CAS 75007-24-8), EMBL-EBI
6. Khavinson VK et al., Peptide Regulation of Gene Expression: A Systematic Review, Molecules 2021 (PMID 34834147)