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Highest purity Selank we've sourced
This lot had 99.1% purity per our LC-MS verification. Batch traceable to the COA provided. Will be our go-to source for all cognitive peptide research going forward.
HPLC Verified
>98% Purity
COA Included
AXON Cognitive & Nootropic
Selank
$78.56
Selank (Thr-Lys-Pro-Arg-Pro-Gly-Pro) is a synthetic heptapeptide analogue of the immunomodulatory peptide tuftsin. Registered in Russia for generalised anxiety disorder, it is studied for anxiolytic, nootropic, and immune-modulating properties.
| Format | Lyophilized Vial |
|---|---|
| Dosage | 10mg |
| Purity | >98% |
| Sub-Line | AXON |
Also available: Selank Capsules (10mg) →
In Stock — Overnight and 2–3 day delivery available
Product Information
Selank | Tuftsin-Derived Anxiolytic Peptide — Research Grade
Selank (Thr-Lys-Pro-Arg-Pro-Gly-Pro) is a synthetic analogue of the endogenous tetrapeptide tuftsin (Thr-Lys-Pro-Arg), with a Pro-Gly-Pro extension that significantly increases metabolic stability. It is registered as a pharmaceutical in Russia and Ukraine for anxiety disorders.
Mechanism of Action
- GABAergic modulation — enhances GABA-A receptor function without binding the benzodiazepine allosteric site, avoiding dependency risk
- BDNF/NGF upregulation — increases brain-derived and nerve growth factor expression in hippocampal models
- Enkephalinase inhibition — slows degradation of endogenous opioid peptides (met-enkephalin, leu-enkephalin)
- Serotonin modulation — studied for effects on 5-HT synthesis and turnover in stress models
Research Areas
Selank is studied in anxiety, cognition, immune function, and neuroprotection. Russian clinical registration data provides Phase II/III evidence in generalised anxiety disorder.
For Research Use Only. Rainbow Peptide supplies Selank exclusively for in vitro and laboratory research purposes. Not for human or veterinary use.
Frequently Asked Questions
- What is Selank?
- Selank (Thr-Lys-Pro-Arg-Pro-Gly-Pro) is a synthetic heptapeptide analogue of the immunomodulatory peptide tuftsin. Registered in Russia for generalised anxiety disorder, it is studied for anxiolytic, nootropic, and immune-modulating properties.
- Is Selank for sale at Rainbow Peptide?
- Yes. Selank is available for purchase with Certificate of Analysis confirming >98% HPLC purity. Every order Overnight and 2–3 day delivery available. For Research Use Only.
- What purity is your Selank?
- Rainbow Peptide's Selank is >98% pure, HPLC verified by an accredited third-party laboratory. A COA is included with every order.
- Is Selank safe for human use?
- No. Selank is strictly For Research Use Only (RUO). It is not intended for human consumption and is not intended to diagnose, treat, cure, or prevent any disease.
- How quickly does Selank ship?
- Overnight and 2–3 day delivery available. Ships in temperature-controlled packaging.
Third-Party Verified
Every Order Ships with a Certificate of Analysis
We don't just claim purity — we prove it. Every batch of Selank is independently tested by an accredited third-party laboratory before it reaches you. Your COA is linked to your specific lot number.
- HPLC purity analysis — minimum threshold >98%
- Mass spectrometry — molecular weight confirmation
- Lot number traceable to your order
- Endotoxin limits verified — safe for cell-based assays
RAINBOW PEPTIDE LABS CERTIFICATE OF ANALYSIS
Product Selank
Lot # RP-00025-A
HPLC Purity >98.0% >98.5% PASS
Mass Spec (MW) Confirmed Confirmed PASS
Endotoxin <1 EU/mg <0.5 EU/mg PASS
Visual Inspection White powder White powder PASS
What Researchers Say
Verified purchases from active research labs and scientists
5.00
★★★★★
2 verified reviews JA
Consistent quality for cognitive research
Semax lot tested above spec. Excellent solubility, expected in vitro behavior. The detailed COA makes this compliant with our supplier verification protocol.
PW
Good purity, great documentation
Mass spec and HPLC data attached to COA. Our internal QC confirmed results. Packaging was excellent — arrived at correct temperature with cold pack still active.
