Selank

Synthetic tuftsin analog, sold for laboratory research.

7: residues
1: size
HPLC: purity, third-party tested

$40per vial

Identity

What Selank is

Selank is a synthetic seven-amino-acid peptide developed in Russia. It was built by adding a short tail to tuftsin, a small fragment of an antibody protein the body already makes. Russian researchers have studied it for decades, mostly in animal learning and behavior experiments, with a smaller number of human trials run inside Russia.

Selank is a synthetic tuftsin analog of 7 amino acid residues. SBz Industries sells it for laboratory research.

CAS number: 129954-34-3
Residue count: 7
Compound class: Synthetic tuftsin analog
Appearance: White lyophilized powder
Solubility: Soluble in bacteriostatic water
Storage: Lyophilized: -20C, protected from light. Reconstituted: 2-8C.
Available sizes: 10 mg

Research

What the research has looked at

In plain terms, with a link to every study. The most useful thing to notice is what each study was done in.

Most Selank research comes out of Russian labs: decades of animal work, rat studies on learning and avoidance tasks, and lab studies on how it interacts with brain receptors. Human data exists but is thinner, and the main human trial compared it against an existing prescription drug rather than a placebo.

rats2003

Trained rats, including some naturally slow learners, on a task where they had to learn to avoid a mild stimulus, giving Selank before each of four training sessions and comparing it with a known learning-focused reference compound. The slow-learning rats given Selank made fewer errors and picked up the task faster than untreated rats.

The optimizing action of the synthetic peptide Selank on a conditioned active avoidance reflex in rats.
Kozlovskii and colleagues, Neuroscience and Behavioral Physiology

cells2018

Used brain membrane tissue from rats to test how Selank binds to GABA receptors, a receptor system several common prescription medicines act on. The binding pattern pointed to a related but distinct pathway from those medicines.

Peptide-based Anxiolytics: The Molecular Aspects of Heptapeptide Selank Biological Activity.
Vyunova and colleagues, Protein and Peptide Letters

people2014

Compared Selank with phenazepam, an existing Russian prescription medicine, in 60 adults, rather than against a placebo. The team tracked symptom rating scales during the study and for a week after it ended.

[A comparison of the anxiolytic effect and tolerability of selank and phenazepam in the treatment of anxiety disorders].
Medvedev and colleagues, Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova

Each study links to its record on PubMed, the US National Library of Medicine database. Checked 25 September 2026.

Handling

Mixing and storage

Lyophilized: -20C, protected from light. Reconstituted: 2-8C.

Full handling guide

01
Let it warm up
Give the vial twenty minutes on the bench before opening it, so water does not condense onto the powder.
02
Add bacteriostatic water
Slowly, down the inside wall of the vial, never straight onto the powder.
03
Let it dissolve
Leave it alone until it clears. Do not shake it. Shaking damages the peptide.
04
Refrigerate and use
Once mixed, it breaks down much faster than the dry powder. Keep it cold and dark.

Documentation

Tested before it goes on sale

An independent lab tests every compound we sell. It confirms the compound is what the label says and measures purity by HPLC.

The latest certificate is on the product page, so you can read the result before you order.

See the certificate

More on Selank

Selank product pageSizes, documentation and the latest certificate.Selank in the compound referenceStructure, origin and molecular target.PT-141 vs SelankSide by side.Selank vs SemaxSide by side.How to read a certificate of analysisThe fields worth checking before an order.Reconstitution and handlingDiluent down the glass, never onto the cake.Bacteriostatic waterShelf life, volumes and what the preservative does.Storage, stability and degradationWhat each condition buys, in weeks and months.

Questions

Common questions about Selank

What is Selank?

Selank is a synthetic seven-amino-acid peptide developed in Russia. It was built by adding a short tail to tuftsin, a small fragment of an antibody protein the body already makes. Russian researchers have studied it for decades, mostly in animal learning and behavior experiments, with a smaller number of human trials run inside Russia. SBz Industries sells it for laboratory research only.

Is Selank approved as a medication anywhere?

It is sold in Russia as a prescription product, but it has no approval from the FDA or other Western regulators.

Has Selank been tested against a placebo in people?

The main human study compared it against an existing prescription medicine, phenazepam, rather than a placebo. That is weaker evidence than a blinded, placebo-controlled trial.

How is Selank reconstituted?

Selank ships as a freeze-dried powder. Mix it with bacteriostatic water, added slowly down the inside wall of the vial, and let it dissolve without shaking. The researcher decides the working concentration, not us, and we publish no protocols.

How should Selank be stored?

Lyophilized: -20C, protected from light. Reconstituted: 2-8C. Vials ship in plain outer packaging with no product name on the outside.

Is Selank tested, and can I see the results?

Yes. An independent lab tests every compound: it confirms the compound is what the label says and measures purity by HPLC. The latest certificate is on the product page, and you can read it before you order.

Who is permitted to purchase Selank?

Researchers and institutions, 21 or over. By ordering you confirm the material is for laboratory research and will not be used in humans or animals.

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Research library

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Selank, third-party tested

Every compound is third-party tested, with the certificate on its product page. Every order ships in plain packaging.

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Selank

What Selank is

What the research has looked at

Mixing and storage

Let it warm up

Add bacteriostatic water

Let it dissolve

Refrigerate and use