Selank is the quieter half of the best known pair in Russian peptide research, and understanding it starts with its parent molecule. This overview covers what selank is structurally, the tuftsin lineage that distinguishes it from its sibling compound, the literature situation every researcher inherits, and verification.
What Selank Is
Selank is a synthetic heptapeptide: the four residue natural peptide tuftsin extended with a proline glycine proline tail. Tuftsin is a fragment of an immunoglobulin heavy chain, first characterized in immune cell research, which gives selank a different family history from most compounds in this catalog. The PGP tail serves the same purpose it serves in semax, protecting a short natural fragment from rapid enzymatic breakdown in experimental systems.
One Design, Two Parents
Selank and semax came from the same Moscow research tradition and share the same engineering: natural fragment plus stabilizing tail. What differs is the parent. Semax descends from ACTH, a neuroendocrine hormone; selank descends from tuftsin, an immune system peptide. That parentage is why the two are studied as complementary rather than interchangeable probes. Our article on Semax and Selank, the Russian neuropeptides traces both lineages in detail.
The Literature Situation
Like its sibling, selank carries a research record written mostly in Russian, with English language coverage citing only part of the primary work. The record is deeper than an English search suggests, and evaluating it takes more work than usual, a tradeoff researchers should know before building on the compound in the cognitive and longevity research category.
Stability and Verification
Lyophilized selank is a stable short peptide: cold, dry, dark storage, gentle handling in solution, minimal freeze thaw cycling. Verification follows the standard pattern of mass spectrometry for identity and HPLC for purity, with net peptide content connecting the certificate to the vial. Certificates for our material are published through the COA portal, and our guide to reading a certificate of analysis for peptides covers each field.
Research Use Only
Selank is supplied strictly for laboratory research by qualified professionals. It is not for human or veterinary use of any kind. Nothing in this overview is a protocol, a recommendation, or a claim of therapeutic effect.
Research compounds in this article
For research use only. Not for human consumption. Every product ships with a published certificate of analysis.