Selank is a synthetic heptapeptide, Thr-Lys-Pro-Arg-Pro-Gly-Pro, made by adding the stabilising tripeptide Pro-Gly-Pro to tuftsin (Thr-Lys-Pro-Arg), an immunomodulatory fragment of immunoglobulin G. Contexx Research supplies Selank in Canada as a 10 mg lyophilized research peptide with a COA on the page.
Selank specifications
| Compound | Selank (Thr-Lys-Pro-Arg-Pro-Gly-Pro) |
|---|---|
| Vial size | 10 mg |
| Vial capacity | 3 mL (the total liquid volume the vial can hold; not the amount of material inside) |
| Form | Lyophilized powder |
| Purity | See lot COA |
| Sequence | H-Thr-Lys-Pro-Arg-Pro-Gly-Pro-OH |
| CAS number | 129954-34-3 |
| Molecular formula | C33H57N11O9 |
| Molecular weight | 751.9 g/mol |
| Storage (unopened) | −20 °C, dry, protected from light |
Research overview
Selank was developed at the Institute of Molecular Genetics in Moscow as a more stable analogue of tuftsin. The C-terminal Pro-Gly-Pro extension slows breakdown by peptidases, the same strategy used for Semax. A review of tuftsin chemistry and its analogues gives useful background on the parent peptide [1].
Much of the recent mechanistic work uses gene-expression analysis. A 2016 study in Frontiers in Pharmacology measured how Selank changes the expression of genes involved in GABAergic neurotransmission in rodent brain tissue [2]. A 2017 in-vitro study in human IMR-32 neuroblastoma cells compared the expression changes induced by GABA, Selank and olanzapine [3].
Selank is used in vitro for transcriptomic studies in neuronal cell lines, peptide-stability and peptidase-resistance experiments, and as a reference compound in research on tuftsin-derived peptides.
Selected references
- Siebert A et al. Curr Med Chem. 2017. PubMed 28745220
- Volkova A et al. Front Pharmacol. 2016. PubMed 26924987
- Filatova E et al. Front Pharmacol. 2017. PubMed 28293190
Storage and handling
Selank ships as a lyophilized (freeze-dried) powder. Dry material is far more stable than material in solution, so keep it in its dry, sealed state until you need it.
- Store unopened vials of Selank at −20 °C, dry and protected from light. Let the vial reach room temperature before opening to limit condensation.
- Prepare stock solutions in a solvent suited to your assay, label them with concentration and date, and keep them at 2–8 °C for short-term use.
- For longer storage of solutions, divide them into single-use aliquots and freeze them; avoid repeated freeze–thaw cycles.
- Handle with gloves and eye protection, following your laboratory’s standard chemical-hygiene practice.
See our guide to storing lyophilized peptides in the lab for more detail.
Quality and testing
A Certificate of Analysis for Selank is available through the Check COA button on this page. Review it for the tested identity and purity of the current lot.
We don’t list purity figures in this description; the lot COA is the reference for identity and purity. Researchers should confirm identity and concentration with their own analytical methods where their protocol requires it.
Frequently asked questions
What’s included when I order Selank 10 mg?
One sealed vial containing 10 mg of Selank as a lyophilized powder. Reconstitution solution is sold separately.
Does Selank come with a Certificate of Analysis (COA)?
Yes. The lot COA is available through the Check COA button on this page.
How fast is shipping in Canada?
Orders are processed Monday to Friday, and most orders ship within 24 hours from Mississauga, Ontario, in secure, tamper-evident packaging. Orders placed on Friday afternoon (after the 12:00 PM ET cut-off) ship on Monday, when Canada Post resumes pickup, or on the next business day if Monday is a statutory holiday. Once your order ships, delivery typically takes 1–3 business days in Ontario and Quebec and 2–6 business days in the rest of Canada, and a tracking number is emailed to you. Orders over $250 CAD shipped within Canada qualify for free standard shipping. See our Shipping Policy for details.
How should Selank be stored?
Store unopened vials at −20 °C, dry and protected from light. After reconstitution, keep solutions at 2–8 °C for short-term use, or freeze single-use aliquots and avoid repeated freeze–thaw cycles.
What does “research use only” mean?
“Research use only” means Selank is sold only as a reference material for in-vitro laboratory and analytical research by qualified professionals. It is not for use in humans or animals, not for diagnostic use, and not a drug, natural health product, food, supplement or cosmetic.
Research use only
Selank is sold by Contexx Research Inc. strictly as a reference material for in-vitro laboratory research and analytical use by qualified professionals. It is not a drug, natural health product, food, dietary supplement or cosmetic. It is not intended for use in humans or animals, for diagnostic purposes, or for ingestion or any other form of administration to a living organism. Nothing on this page describes or implies any effect in humans or animals. Purchasers are responsible for handling, storage and disposal in line with applicable laws and their institution’s policies. By ordering, you confirm that you are purchasing for legitimate laboratory research and agree to our Terms and Conditions.

1 review for Selank 10mg
Lorraine (verified owner) –
Great product, accurately described. Fast shipping and wonderful customer service support. Highly recommend!