Selank FAQ: Your Questions Answered
The questions below are the ones that come up specifically about Selank, rather than general peptide questions that apply to everything.
In plain English
Frequent questions: what tuftsin is, why it needs special tubes, why it is less light-sensitive than Semax, and whether it is sedating in research models.
What Selank actually is
Selank came out of the same Moscow programme as Semax, built from tuftsin — a tiny natural fragment released from antibodies — with the same stabilising tail added. Its research literature centres on anxiety-related behaviour and the brain signalling systems associated with it.
Supplied for laboratory research use only — not for human or animal use.
Third-party tested by HPLC and LC-MS, ≥99% purity, with a Certificate of Analysis on every order. Ships across Canada.
Technical detail below
Selank — common questions
What is tuftsin, and why does Selank derive from it?
Tuftsin is a naturally occurring immunomodulatory tetrapeptide (Thr-Lys-Pro-Arg) released from the Fc region of immunoglobulin G, named for Tufts University where it was characterised. Selank extends it with Pro-Gly-Pro to resist rapid enzymatic clearance — the same stabilisation strategy used for Semax.
Why is Selank less oxidation-sensitive than Semax?
Residue composition. Semax carries an N-terminal methionine, the single most oxidation-prone proteinogenic side chain. Selank's sequence contains no methionine, cysteine, or tryptophan at all, so the main chemical degradation route simply does not apply.
Why does Selank need low-bind labware?
Lysine and arginine give it a strong net positive charge at working pH, and negatively charged glass and untreated plastic surfaces bind cationic peptides readily. At dilute concentrations this adsorption can remove a meaningful fraction of the material from solution — a loss that looks like poor potency but is purely physical.
Is Selank sedating in research models?
The published literature characterises it as anxiolytic in behavioural models without the sedation associated with benzodiazepine-class compounds — that distinction is one of the reasons it attracted research attention. This describes findings in preclinical models only.
What Selank is studied for
The most-populated area of the Selank literature, examined in behavioural anxiety models.
Studies have investigated interaction with both systems without the sedative profile of classical anxiolytics.
Its parent tetrapeptide is immunomodulatory, and some research follows that thread.
Investigated in learning and memory paradigms alongside its stress-response work.
Summarizes published preclinical literature. Provided for research reference only; not a claim of efficacy or a description of human use.
More Selank reference
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.
FAQ reference for other compounds
Selank is supplied strictly as a research chemical for in-vitro laboratory and research use only. It is not intended for human or animal consumption, diagnostic, or therapeutic use. This page is educational laboratory-handling reference information — not medical advice, not usage guidance, and not a protocol.