Buy 2, save 5%Buy 3+, save 9%Buy 6+, save 15%Buy 10+, save 22%Free EU & Balkan shipping over €1503rd-party tested batchesTest results available through the libraryCzech Republic fulfillmentResearch use onlyBuy 2, save 5%Buy 3+, save 9%Buy 6+, save 15%Buy 10+, save 22%Free EU & Balkan shipping over €1503rd-party tested batchesTest results available through the libraryCzech Republic fulfillmentResearch use only
Lyophilized form helps protect peptide quality. Peptides are supplied as a dry powder, which may look like a compact "puck" or a lighter powder inside the vial.
Because the peptide is dry, it does not require refrigerated shipping during normal transit, including warm seasonal conditions. For longer storage, follow the storage guidance in the product description.
Appearance can vary. The stated peptide content is checked through third-party analysis.
Read more in the product description.
Solution not bundled
Peptides are delivered as lyophilized powder. This dry form helps preserve peptide quality during storage and transport and does not require refrigerated shipping during normal transit.
To prepare a solution, use a solvent such as Bacteriostatic water. It is sold separately, so add it only when you need it for peptide preparation.
Read more in the product description.
Neuroregulatory peptide
Selank
In stock
Selank is a synthetic peptide based on tuftsin and made of seven amino acids. Published studies look at GABA-related gene activity, cytokines, learning, memory, and pain-perception models.
MassQuantity
33,00 €33,00 €
Order within — · ships today
Cutoff 10:00 · local time
Arrives Sep 21 - Sep 23
to Europe
Free shipping on orders over €150
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Selank · 1 vial133,00 €33,00 €
Selank
21,90 €–33,00 €Price range: 21,90 € through 33,00 €
Tuftsin-derived heptapeptide for neuropeptide and stress-pathway studies.
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Research overview
Selank
Selank has the sequence Thr-Lys-Pro-Arg-Pro-Gly-Pro. Its short sequence supports controlled identity, stability, and signalling studies.
Studies cover GABA-system markers, immune-cell signals, thinking tasks, and pain-response models. Each report applies only to its experimental conditions.
GABA and immune signalling
Studies measure GABA-system gene activity, cytokine markers, and links between nerve and immune signals. These are molecular and cellular research endpoints.
Each paper should be read with its exact tissue, model, and timing.
Cognitive and sensory models
Other studies use learning, memory, brain-injury, and pain-perception models. These endpoints need the original protocol and comparison group for context.
Compound information
Specifications
Molecular profile
Sequence
Thr-Lys-Pro-Arg-Pro-Gly-Pro
Molecular mass
751.9 g/mol
CAS number
129954-34-3
Molecular formula
C33H57N11O9
Material record
Physical appearance
White to off-white lyophilized powder
Solubility
Soluble in bacteriostatic water and suitable aqueous laboratory solvents.
Product note
Tuftsin-derived heptapeptide analogue; supplied strictly for research use only.
Laboratory care
Handling
Peptides in transport
Peptides in lyophilized form are supplied in glass vials by standard shipping methods and do not require refrigeration. Short-term temperature fluctuations during transport will not reduce their quality and efficacy. Even at high summer temperatures, the peptides in lyophilized form are stable for several weeks.
Storage of lyophilized peptides
Lyophilized peptides should be stored in a dry place, protected from light and moisture. The following storage conditions are generally recommended:
Room temperature (15–25 °C): Up to 3 months
Refrigerated (2–8 °C): Up to 6 months
Frozen (-20 °C or below): 3–5 years (recommended for long-term storage)
Allow the vial to reach room temperature after taking it out of the refrigerator or freezer.
Storage of reconstituted peptides
Once reconstituted, peptide solutions are generally less stable than their lyophilized form and should be stored under refrigerated conditions whenever possible.
The following storage conditions are generally recommended:
Room temperature (15–25 °C): Avoid prolonged storage
Refrigerated (2–8 °C): Typically 4–8 weeks
Frozen (-20 °C or below): Up to 3–4 months
To preserve peptide integrity, avoid repeated freeze–thaw cycles, as these may accelerate peptide degradation.
Important: Most manufacturers recommend discarding reconstituted peptides within 4 weeks when stored at 2–8 °C. This recommendation is intentionally conservative and may not reflect the actual chemical stability of every peptide. In our own stability studies, many peptides reconstituted in bacteriostatic water showed no detectable degradation after 12 weeks of refrigerated storage. As peptide stability is highly sequence- and formulation-dependent, this result should not be extrapolated to all peptides without supporting stability data.
Analytical documentation
Latest test results
Latest published result
Liquilabs s.r.o.Signed Certificate of Analysis · 10mg
> 99.8%Purity by HPLC
Batch number
2025282
Tested
2026-05-28
Recorded QC panel
AssayPeptide screening
12.13 mg
PurityPeptide screening
> 99.8%
Identity (FTIR)FTIR spectrum
998
Identity (RT)Retention time
0.984
These are the latest published results for this strength. The batch number is printed on each vial. Your supplied batch is confirmed against the matching published record when your order is allocated.
On request
Documentation is available on request
Contact us for the current record for this strength. We never substitute a generic or mismatched certificate.
Your batch is confirmed when your order is allocated.
Kolik LG, Nadorova AV, Antipova TA, Kruglov SV, Kudrin VS, Durnev AD · 2019
Selank, Peptide Analogue of Tuftsin, Protects Against Ethanol-Induced Memory Impairment by Regulating of BDNF Content in the Hippocampus and Prefrontal Cortex in Rats
Bulletin of experimental biology and medicine ·
View source ↗
Medvedev VE, Tereshchenko ON, Israelian AIu, Chobanu IK, Kost NV, Sokolov OIu, Miasoedov NF · 2014
[A comparison of the anxiolytic effect and tolerability of selank and phenazepam in the treatment of anxiety disorders]
Zhurnal nevrologii i psikhiatrii imeni S.S. Korsakova ·
View source ↗
Zozulya AA, Kost NV, Yu Sokolov O, Gabaeva MV, Grivennikov IA, Andreeva LN, Zolotarev YA, Ivanov SV, Andryushchenko AV, Myasoedov NF, Smulevich AB · 2001
The inhibitory effect of Selank on enkephalin-degrading enzymes as a possible mechanism of its anxiolytic activity
Bulletin of experimental biology and medicine ·
View source ↗
Leonidovna YA, Aleksandrovna SM, Aleksandrovna TA, Aleksandrovna BO, Fedorovich MN, Aleksandrovna AL · 2021
The Influence of Selank on the Level of Cytokines Under the Conditions of "Social" Stress
Current reviews in clinical and experimental pharmacology ·
View source ↗
O. Y. Sokolov, V. K. Meshavkin, N. V. Kost, and A. A. Zozulya
Effects of Selank on behavioral reactions and activities of plasma enkephalin-degrading enzymes in mice with different phenotypes of emotional and stress reactions
Bull. Exp. Biol. Med. [PubMed] ·
O. N. Uchakina et al. · 2008
[Immunomodulatory effects of selank in patients with anxiety-asthenic disorders]
Zh. Nevrol. Psikhiatr. Im. S. S. Korsakova ·
T. Kolomin, M. Shadrina, L. Andreeva, P. Slominsky, S. Limborska, and N. Myasoedov · 2011
Expression of inflammation-related genes in mouse spleen under tuftsin analog Selank
Regul. Pept ·
T. I. Agapova et al. · 2008
[Effect of semax on the temporary dynamics of brain-derived neurotrophic factor and nerve growth factor gene expression in the rat hippocampus and frontal cortex]
Mol. Genet. Mikrobiol. Virusol ·
T. P. Semenova, I. I. Kozlovskiĭ, N. M. Zakharova, and M. M. Kozlovskaia · 2010
[Experimental optimization of learning and memory processes by selank]
Eksp. Klin. Farmakol ·
T. A. Kolomin et al. · 2013
[c]
Zh. Vyssh. Nerv. Deiat. Im. I. P. Pavlova ·
T. P. Semenova, M. M. Kozlovskaya, N. M. Zakharova, I. I. Kozlovskii, and A. V. Zuikov
Effect of selank on cognitive processes after damage inflicted to the cerebral catecholamine system during early ontogeny
Bull. Exp. Biol. Med ·
N. V. Kost et al. · 2001
[Semax and selank inhibit the enkephalin-degrading enzymes from human serum]]
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