Selank is the heptapeptide Thr-Lys-Pro-Arg-Pro-Gly-Pro. It incorporates the tuftsin sequence Thr-Lys-Pro-Arg and adds Pro-Gly-Pro, but it is not identical to tuftsin.
Evidence at a glance
- PubChem lists sequence TKPRPGP, formula C33H57N11O9 and molecular weight 751.9 g/mol.
- The acetate salt is a separate material record and should not be treated as mass-equivalent to free Selank.
- Human evidence and catalog-lot quality must be documented separately.

Identity record
The proline-rich sequence can produce characteristic fragmentation behavior. Identity work should use an appropriate reference and document terminal chemistry and any counterion rather than relying on the short name alone.
Analytical and evidence boundary
Selank acetate adds counterion and possibly water to the as-is mass. Report peptide-equivalent content separately from total material mass when calculations require it.
Editorial descriptions should say “investigated in small anxiety-disorder comparisons and GABA-related preclinical studies.” They should not imply regulatory approval or equivalence to benzodiazepines.
Editorial rule
State the exact material, form, model or population and endpoint supported by the cited record. Do not convert mechanistic plausibility, an animal result, an official finished-drug label or an analytical test into a claim about an unrelated catalog lot.
Sources & editorial method
This article discusses the source records listed below, with the study models and limitations stated alongside the findings. AI-assisted drafting and image generation were used. The reference list identifies the records behind this article; it is not an independent peer review or verification of a supplied catalog lot.
4 linked records are listed in the references below. Read the editorial and AI-assistance policy.
How to interpret this article
Source-checked on 2026-09-02. Null results, sample size, model/population limits and regulatory scope are retained. This is not medical advice, a customer case or validation of a catalog lot.
Research-use boundary: Catalog materials discussed on this website are for laboratory research, development and manufacturing use only, not for human or veterinary use. This content is not medical advice and does not provide administration instructions.
Primary records and authoritative sources
- Selank versus medazepam in GAD and neurastheniaSmall 62-person Russian-language report; PMID 18454096.
- Selank versus phenazepam clinical comparisonSmall 60-person Russian-language report; PMID 25176261.
- Selank affects expression of genes involved in GABAergic neurotransmissionExperimental study. 2016. PMID 26924987.
- PubChem Selank recordSequence, formula, molecular weight and synonyms; CID 11765600.
Continue with structured records
Move from this editorial analysis to the product identity, filtered evidence and controlled terminology behind it.



