Selank
Synthetic heptapeptide, lyophilised. For in vitro research use only.
Key facts
- Compound:
- Selank
- Purity:
- ≥99%, verified by HPLC
- Identity confirmed by:
- LC-MS, independent third-party lab
- CAS number:
- 129954-34-3
- Molecular weight:
- 751.86 g/mol
- Certificate of analysis:
- available on request, verifiable by lot number
- Ships from:
- Vancouver, BC — typically 2–5 business days, tracked and insured, no customs
- Intended use:
- in vitro laboratory research only — not for human or veterinary consumption
Page last updated
Selank is a synthetic heptapeptide.
Selank for cognitive and behavioural neuroscience, shipped Canada-wide from Vancouver. One 10 mg vial, ≥99% purity, CAS 129954-34-3, molecular weight 751.86 g/mol. Identity and purity are confirmed by independent HPLC and LC-MS, with the batch-specific Certificate of Analysis available on request. Every lot number is verifiable at popularpeptides.ca/verify. Tracked, insured delivery across Canada — typically 2 to 5 business days, with no customs step and no brokerage fee.
Supplied lyophilised for in vitro laboratory research use only; not intended for human or veterinary use.
Primary literature
- Selank Administration Affects the Expression of Some Genes Involved in GABAergic Neurotransmission — Frontiers in Pharmacology, 2016
Volkova et al. Open-access. Selank altered expression of GABA-A receptor subunit genes in rat brain.
Cited for research context. A citation is not a claim that this compound is safe, effective, or approved for any use.
⚠️ Research Use Only. This compound is intended for in vitro research and laboratory use only. Not for human or veterinary consumption.
Selank — compound background
Synthetic heptapeptide, tuftsin analogue
Selank was developed at the Institute of Molecular Genetics in Moscow by extending the immunomodulatory tetrapeptide tuftsin (Thr-Lys-Pro-Arg) with the same Pro-Gly-Pro stabilising motif used in Semax. It is, in effect, the anxiolytic-research counterpart to Semax from the same design programme.
Solubility & reconstitution
Freely water-soluble. Two basic residues (Lys, Arg) give the molecule a strong net positive charge at neutral pH, which drives high aqueous solubility but also makes it the most adsorption-prone short peptide in this catalogue at dilute concentrations.
Storage
Sealed at -20 °C for long-term storage; short 2–8 °C periods are acceptable. Refrigerate at 2–8 °C. Selank contains no methionine, cysteine, or tryptophan, so it is notably less oxidation-sensitive than Semax.
Commonly worked with for 3–4 weeks at 2–8 °C — a longer window than most peptides of comparable size, precisely because it lacks oxidisable residues.
Stability
Selank is chemically one of the more forgiving peptides here. Its handling risk is physical loss to surfaces rather than molecular breakdown, which means the countermeasure is low-bind labware rather than light protection.
Reading the Certificate of Analysis
Confirm the molecular ion near 751.9 Da. With no oxidation-prone residues, the oxidised-satellite check that matters for Semax and TB-500 is not the relevant concern — focus instead on the RP-HPLC trace for deletion sequences at the proline positions.
Background and handling information is educational, for in-vitro laboratory research use only — not medical advice, dosing, or usage guidance, and not a description of use in humans or animals.
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Selank laboratory reference
Selank is synthetic heptapeptide, tuftsin analogue. Handling requirements follow from that chemistry rather than from generic peptide guidance — the pages below cover each aspect specifically for this compound.
Lyophilized and reconstituted storage conditions, plus the practical working window.
Diluent selection, dissolution behaviour, and the calculator preset for this compound.
Which solvents work, why, and what abnormal dissolution behaviour indicates.
The specific chemical routes by which this molecule breaks down, and how to limit each.
Which assays are informative for this molecule, and what to actually check on its COA.
Compound-specific bench practices, and the errors most often made with this molecule.
What to inspect on arrival, and which conditions actually warrant rejecting a vial.
Questions specific to this compound — structure, chemistry, and common misconceptions.
Selank compared with
Reference content is educational laboratory-handling information for in-vitro research use only — not medical advice, not usage guidance, and not a protocol.