Selank 10mg
Lot PX1SLNK10-0021 · Verified
99%+
Purity
HPLC
10.65mg
Net content
label 10mg · +6.5%
Confirmed
Identity
Selank · MS
- HPLC purity
- Mass spec
- Net content
- Lot matched
Selank
Third-Party Tested
Made in the USA
Ships from the USA
Peptides
Selank
$65.00Selank is a synthetic tuftsin-derived heptapeptide. Preclinical research examines neuropeptide signaling, neurotransmitter-associated pathways and immune-cell responses.
Available catalog options: 10mg. Supplied as a vial preparation; consult the product and lot documentation for material specifications.
For laboratory research only. Not for human consumption, veterinary use, therapeutic applications or diagnosis.
SelankPeptidesLyophilized
1,414 in stock (cold storage)
Strength
Quantity
1
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- HPLC & LC-MS verified purity 99%+ · Lot-linked COA
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For research use only. Not for human or animal consumption.
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Lot shipping PX1SLNK10-0021 · 10mg
Certificate of Analysis
ILS Laboratories · Tested Sep 9, 2026
Molecular weight
751.88 g/mol
Molecular formula
C₃₃H₅₇N₁₁O₉
CAS number
129954-34-3
Chain length
7 amino acids
Amino-acid sequence
Thr-Lys-Pro-Arg-Pro-Gly-Pro
Classification: Research peptide
Full GHS 16-section Safety Data Sheet for Selank, prepared per OSHA HazCom 2012 (29 CFR 1910.1200). Includes substance identity, handling & storage, PPE, stability, transport and regulatory information.
CAS No.
129954-34-3
Formula
C₃₃H₅₇N₁₁O₉
Mol. Weight
751.88 g/mol
Classification
Not hazardous (GHS)
Selank — Tuftsin-Derived Heptapeptide
Selank is a synthetic 7-amino-acid peptide with the sequence Thr-Lys-Pro-Arg-Pro-Gly-Pro. It extends the immunomodulatory tetrapeptide tuftsin (Thr-Lys-Pro-Arg) with a Pro-Gly-Pro tail for greater enzymatic stability. It was developed in Russia and is studied mainly in rodent neuroscience models.
Research context
- In rat frontal cortex, Selank changed the expression of several genes involved in GABAergic neurotransmission (Volkova et al., Frontiers in Pharmacology, 2016).
- It is used as a reference peptide alongside Semax in studies of short regulatory peptides.
These findings describe specific model systems. They do not establish any outcome for the material supplied here.
Selank specifications
- CAS Number: 129954-34-3
- Molecular Formula: C33H57N11O9
- Molecular Weight: ≈751.9 g/mol
- Sequence: Thr-Lys-Pro-Arg-Pro-Gly-Pro (7 residues)
- Form: Lyophilized white powder in a sealed glass vial
- Strengths: shown in the strength options on this page
- Storage: Sealed at −20 °C, dry and protected from light
Analytical considerations
Identity is confirmed by LC-MS against the theoretical mass and purity is measured by reversed-phase HPLC. The lot-linked COA on this page reports the results for the material you receive.
Laboratory handling
Bring the closed vial to room temperature before opening, prepare solutions according to your laboratory's validated protocol, and record the lot number, concentration and storage conditions. Minimize repeated freeze–thaw cycles.
Common research questions
What is the difference between Selank and Semax? They are unrelated sequences. Selank comes from tuftsin; Semax comes from ACTH(4-10). PX1 lists each on its own page and also offers a Selank + Semax blend.
Does PX1 offer Selank in other formats? Yes. A nasal format is listed separately with its own page and documentation.
References
- Volkova A, et al. Selank Administration Affects the Expression of Some Genes Involved in GABAergic Neurotransmission. Front Pharmacol. 2016. PMID 26924987.
Intended use
For research use only. Not for human or veterinary use, consumption, diagnosis, treatment or medical application. This material should be handled only by qualified professionals in an appropriate laboratory setting.
Purity (HPLC)
≥99%
Application
For Research Use only
Form
Lyophilized Powder
Storage
-20°C Long Term
Testing
Third Party Tested
Manufacture
USA
99%+ HPLC Purity
Independently verified by accredited US laboratory
Endotoxin-Screened
LAL tested, LPS-free, endotoxin report available
GMP-Certified Manufacturing
USA facility, ISO 9001:2015
Lyophilized for Stability
Shipped cold-packed and sealed for stability
Investigated in preclinical neuropeptide models for GABAergic, serotonergic and immune-signaling effects.
For research use only — not for human or animal consumption.
Research monograph
Selank — Complete Research Overview
What is Selank?
Selank is a synthetic heptapeptide consisting of the immunomodulatory tetrapeptide tuftsin (Thr-Lys-Pro-Arg) extended with the tripeptide Pro-Gly-Pro, which markedly increases stability against enzymatic degradation.
PX1 Research supplies lyophilized Selank as a reference compound for neuropeptide research, where it is studied alongside Semax as part of the regulatory-peptide class developed from endogenous fragments.
Mechanism of action
In rodent models Selank has been reported to modulate GABAergic and serotonergic signaling and to influence expression of brain-derived neurotrophic factor. It has also been described as altering the balance of enkephalin-degrading enzyme activity, which prolongs endogenous enkephalin signaling.
Its tuftsin heritage also gives it documented effects on immune-cell readouts in culture, so experiments frequently pair neurological and immunological endpoints.
Laboratory handling and storage
Selank ships as a lyophilized powder in a sealed, tamper-evident vial. Store the unopened vial between −20°C and −80°C, protected from light, until the day of use. In this state the peptide is stable through the labeled expiration date printed on the lot documentation.
Purity, testing and Certificate of Analysis
Every PX1 Research lot of Selank is manufactured in the United States and released against a documented specification of ≥99% purity by reversed-phase HPLC, with identity confirmed on the same lot by high-resolution LC-MS against the theoretical mass of the sequence.
Research use only
Selank supplied by PX1 Research is intended strictly for in-vitro laboratory and research applications. It is not a drug, food, cosmetic, or medical device, and it is not for human or veterinary use, diagnosis, treatment, or consumption.
Researchers are responsible for handling the compound in accordance with their institution's safety procedures and all applicable local regulations. Safety data sheets and current lot documentation are available on this site.
References
- Kolomin 2013. Kolomin T, et al. Transcriptomic response of rat hippocampus and spleen cells to single and chronic administration of the peptide Selank. Doklady Biological Sciences. 2013;449:113-116.
All products are sold strictly for laboratory and research use only. Not for human or veterinary use, diagnosis, treatment or consumption. Statements have not been evaluated by the FDA.
High Quality — 99% Purity Guaranteed
Product Quality Guarantee
We are continuously conducting HPLC testing on all of our raw powders as well as our finished products to ensure the quality of what we ship. You can have the product you bought from us independently tested at any HPLC-licensed testing facility — and if the results come back negative, we will refund the following:
HPLC Test Fee
$100
Plus a full refund
Total order amount + shipping