Amino Science Labs sells research peptides exclusively to qualified researchers and laboratories for in vitro and laboratory use. Please confirm before continuing.
By proceeding you affirm the statements above are true. Products are not for human or veterinary use, not for use in diagnostic procedures, and have not been evaluated by the U.S. Food and Drug Administration. Full disclaimer.
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Research Peptide
Selank for research
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Third-party tested
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99%+ purity
HPLC verified
7AA
HEPTAPEPTIDE
Tuftsin analogue with Pro-Gly
GABA-A
MODULATION
Allosteric GABA receptor modulator
90+
PUBLICATIONS
Russian nootropic research
2009
APPROVED IN RUSSIA
As anxiolytic medication
752Da
MOL. WEIGHT
Thr-Lys-Pro-Arg-Pro-Gly-Pro
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Research
Selank is a synthetic heptapeptide (sequence Thr-Lys-Pro-Arg-Pro-Gly-Pro) supplied here as a reference material for in-vitro and preclinical laboratory work. Its structure is a synthetic analog of the endogenous immunomodulatory tetrapeptide tuftsin, extended with a C-terminal Pro-Gly-Pro tripeptide. That added tripeptide is a deliberate design feature: the terminal proline residues are associated with markedly greater resistance to enzymatic cleavage than the parent tetrapeptide, which is one reason the heptapeptide is frequently characterized in stability and metabolism assays. With a molecular formula of C33H57N11O9 (CAS 129954-34-3) and an average mass near 751 Da, Selank is produced entirely by solid-phase peptide synthesis and is not isolated from biological sources.
Interest in Selank as a research substance centers on how a short, proline-rich, sequence-defined peptide behaves across cell-culture and rodent-model systems. It appears in the literature as a tuftsin-derived peptide investigated for interactions with peptidergic and monoaminergic signaling pathways under controlled conditions. The compound has no established consumer application; the surrounding body of work is preliminary and ongoing, and observations from in-vitro or animal-model systems should not be extrapolated to human or veterinary outcomes.
Published investigations of Selank are predominantly rodent-model and in-vitro in nature. Reported experimental lines of inquiry include its enzymatic-degradation profile in plasma and tissue homogenates, its association with expression of signaling-related genes in cultured and neural tissue, and observations reported in monoamine- and neuropeptide-related pathways within controlled animal-model paradigms. As a tuftsin analog, it has also been examined in assays probing immune-cell and cytokine-related endpoints. These are descriptions of experimental observations in laboratory systems only.
These references describe experimental laboratory work only. They are not medical claims, are not evidence of safety or efficacy in humans or animals, and should not be interpreted as guidance for any use outside a controlled research environment.
Each research lot is supplied as a white lyophilized powder and characterized before release. Identity and purity are established using orthogonal methods so that the material described on the Certificate of Analysis (COA) matches the sequence and mass expected for the heptapeptide. This separates purity (how much of the sample is the target peptide) from identity (confirmation that the target is the correct molecule) rather than relying on a single measurement.
The COA accompanying each product is the definitive analytical record for that specific lot. Because purity and net content can vary slightly between synthesis batches, researchers should reference the COA tied to the lot number received — not generic specifications — when documenting experimental inputs, and retain it alongside experimental records to support reproducibility and traceability.
As a lyophilized peptide, Selank is hygroscopic and sensitive to repeated temperature cycling. Standard laboratory practice is to allow sealed vials to equilibrate to room temperature before opening to minimize condensation, then reconstitute with an appropriate research-grade solvent under aseptic technique. Aliquoting reconstituted stock into single-use portions limits freeze-thaw cycles that can compromise peptide integrity. Detailed temperature and stability windows for lyophilized, reconstituted, and working solutions appear in the storage table on this page.
It ships as a white lyophilized (freeze-dried) powder in a sealed vial, sized by peptide mass (for example, a nominal 10 mg vial). Lyophilization improves shelf stability for a research peptide and lets the researcher reconstitute with a solvent of choice under aseptic conditions when preparing in-vitro experiments. This listing is for the freeze-dried powder format.
Purity is measured by reversed-phase HPLC-UV and reported as a percentage of total peak area, while identity is confirmed by mass spectrometry (LC-MS) against the theoretical mass of the heptapeptide. The lot-specific COA documents both values plus appearance and net peptide content, and is the authoritative analytical record for the exact material you receive. Representative lots have reported purity near 99.9%, with a stated specification of at least 98%.
Selank's sequence (Thr-Lys-Pro-Arg-Pro-Gly-Pro) corresponds to the endogenous tetrapeptide tuftsin extended with a C-terminal Pro-Gly-Pro tripeptide. In the research literature this proline-rich extension is associated with greater resistance to enzymatic degradation than the parent tetrapeptide, which is one reason the heptapeptide is frequently used in stability and metabolism assays as a model peptide.
Published work is predominantly in-vitro and rodent-model, spanning peptide-degradation and metabolism assays, gene- and protein-expression studies in neural and immune tissue, and mechanistic work characterizing monoamine- and neuropeptide-related signaling pathways. As a tuftsin analog it has also appeared in cytokine- and immune-cell-related assays. This research is preliminary and ongoing, describes laboratory systems only, and establishes no human or animal outcome.
This product is sold strictly for in-vitro research and laboratory use only. It is not intended for human or animal consumption, diagnostic purposes, or therapeutic application.
By purchasing this product, you confirm that you are a qualified researcher operating within an appropriate laboratory environment and will use this compound in accordance with all applicable local, state, and federal regulations.
Amino Science Labs assumes no liability for misuse of this product outside of its intended research application.
Allow the sealed vial to reach room temperature before opening to prevent condensation on the hygroscopic powder, reconstitute using aseptic technique with a research-grade solvent, and aliquot the stock to avoid repeated freeze-thaw cycles. Follow the specific temperature and time windows in the storage table on this page for lyophilized, reconstituted, and working solutions.
No. This material is supplied strictly for in-vitro and laboratory research use by qualified researchers. It is not a drug, supplement, or food; it is not intended for human or animal consumption or for any diagnostic or therapeutic purpose; and nothing on this page constitutes medical advice.
