Synthetic Tuftsin Analogue — Heptapeptide — 10mg
Buy Selank UK from Pureline Biolabs. Selank (TP-7) is a synthetic heptapeptide analogue of the tetrapeptide tuftsin, developed at the Institute of Molecular Genetics, Russian Academy of Sciences. Supplied as lyophilised powder for laboratory research. Independently verified at 98.913% purity by Janoshik Analytical.
32.99
Inc. VAT · Free UK delivery over £75
Batch PLB-006 · Janoshik Analytical · 98.913% purity confirmed
About Selank
Selank (TP-7) has the amino acid sequence Thr-Lys-Pro-Arg-Pro-Gly-Pro. It is tuftsin (Thr-Lys-Pro-Arg), an endogenous tetrapeptide, extended with a Pro-Gly-Pro sequence that increases its resistance to enzymatic breakdown. Researchers often compare Selank with Semax, a related ACTH(4–7) analogue that carries the same Pro-Gly-Pro extension.
The published research on Selank, including the limits of what it shows, is reviewed on our Selank compound profile. Most of that literature comes from animal models and Russian research groups, and it does not describe the effects of research-grade material.
All Pureline Biolabs Selank is supplied as a lyophilised powder in sealed vials, independently tested by Janoshik Analytical at 98.913% purity — see the full batch certificate on our Lab Reports page.
Product Specifications
| Compound | Selank |
| Also known as | TP-7 · Selanc |
| Sequence | Thr-Lys-Pro-Arg-Pro-Gly-Pro |
| Structure | Heptapeptide · Tuftsin analogue |
| Molecular formula | C33H57N11O9 |
| Molecular weight | 751.89 g/mol |
| CAS number | 129954-34-3 (free peptide) |
| PubChem CID | 11765600 |
| Vial size | 10mg lyophilised powder |
| Purity | 98.913% — Janoshik verified |
| Form | Lyophilised powder, sealed vial |
| Manufacturing | Batch-Tested on Receipt |
| Batch | PLB-006 |
| Research use only | Not for human consumption |
Research Background
Selank has been studied in neuropeptide, neurochemistry and immunology research. The areas below describe what published studies measured, not established effects. For the full evidence review, see the Selank compound profile. This product is supplied for laboratory research purposes only.
In vitro studies have measured Selank’s inhibition of the enzymes that break down enkephalins in blood plasma.
Animal studies have measured brain-derived neurotrophic factor (BDNF) mRNA levels in the hippocampus and cortex after Selank administration.
Rodent studies have measured serotonin and dopamine metabolite levels in brain tissue.
As a tuftsin analogue, Selank has been examined in immunology studies measuring cytokine and immune-cell markers in laboratory models.
Cell and animal studies have profiled changes in the expression of genes linked to inflammation and GABAergic signalling.
Rodent studies have measured stress-hormone markers in hypothalamic-pituitary-adrenal (HPA) axis models.
Store in refrigerator. Keep away from direct light and heat sources.
Use within 28 days. Do not refreeze once reconstituted.
Stable for up to 24 months when frozen as lyophilised powder.
Standard precautions — keep away from direct sunlight.
Reconstitution Guide
Selank is supplied as a lyophilised powder and must be reconstituted with bacteriostatic water before use in research applications.
Allow vial to reach room temperature. Clean the rubber stopper with an alcohol swab and allow to dry completely.
Draw required volume of BAC water into a sterile syringe. Inject slowly down the inside of the vial wall — not directly onto the powder.
Gently swirl until powder fully dissolves. Do not shake. Solution should be clear and colourless. Selank dissolves readily in BAC water.
Use our Reconstitution Calculator → for exact volumes.
Buying Selank in the UK — common questions
What purity is Pureline’s Selank, and who tested it?
Batch PLB-006 was reported at 98.913% by HPLC at Janoshik Analytical, with LC-MS supporting the assigned molecular identity. That is an area-percent figure under the laboratory’s stated method — chromatographic purity of the tested sample, not a claim about biological activity. The purity figures guide covers what area-percent leaves out, including salt and water content.
How much bacteriostatic water does a 10mg Selank vial need?
2ml gives 5 mg/ml and 3ml gives roughly 3.33 mg/ml. Mass divided by volume is the whole calculation. The reconstitution calculator has the 10mg vial loaded, and the reconstitution guide explains why very dilute stocks lose more peptide to the vial wall than the arithmetic suggests.
Selank or Semax — are they interchangeable?
No. Selank is a synthetic analogue of the immune peptide tuftsin, studied mainly for anxiolytic and immune-modulatory endpoints. Semax is an ACTH(4–7) fragment extended with Pro-Gly-Pro, studied principally for BDNF and TrkB-related gene expression. Structurally unrelated peptides with separate literatures — treat them as distinct research articles.
How should Selank be stored?
Sealed and lyophilised at 2–8°C, protected from light; it ships cold chain from the UK. Once in solution, refrigerate at 2–8°C and aliquot into single-use portions before freezing so the stock takes one freeze-thaw cycle rather than one per use. Let a closed vial reach room temperature before opening, because lyophilised peptide pulls moisture out of the air onto a cold surface.
How fast do you ship, and where from?
Stock is held and dispatched in the UK under cold chain, so nothing sits in customs. Delivery is free over £75; the detail is on the shipping policy page.
Can I see the Certificate of Analysis before I order?
Yes. The batch report is published on our independent lab reports page before the stock is listed, and the batch number on the report matches the number printed on your vial. The label carries a QR code that opens the report on Janoshik’s own verification server.
Is Selank legal to buy in the UK?
It is supplied strictly as a research chemical for in vitro laboratory use. Whatever status Selank holds elsewhere, it has no UK marketing authorisation and is not a licensed medicine here, so it is not sold for human or veterinary use. The UK peptide law guide sets out how research-use materials sit within the regulations.
All products sold by Pureline Biolabs Ltd are intended strictly for laboratory research purposes only. Not approved for human consumption, veterinary use, or any other application. Not evaluated by the MHRA or any other regulatory authority. Pureline Biolabs Ltd · Company No. 17236739 · purelinebiolabs.com
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