For laboratory research use only. Not for human consumption.
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Illustrative certificateNS-2026-06052Nordicstar Analytical Sciences
Selank 5 MG
Illustrative certificateNS-2026-06053Nordicstar Analytical Sciences
Selank 10 MG
Nootropic Research
Tuftsin-derived peptide & neurotransmission research
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For laboratory research use only.
Not for human consumption or clinical use.
The records shown here are illustrative. Request laboratory-issued documentation for your lot before ordering.
Priority, tracked shipping within the United States, free on orders of $200 or more after savings. Add Priority dispatch at checkout to have your order packed first; Private Clients receive it on every order. Follow the product documentation for laboratory handling requirements.
Shipping information01 / The compound
Tuftsin-derived peptide & neurotransmission research
Selank is a synthetic heptapeptide composed of seven amino acids with the sequence Thr-Lys-Pro-Arg-Pro-Gly-Pro (TKPRPGP). It was developed as an analog of tuftsin, a naturally occurring regulatory peptide, by extending the tuftsin sequence with Pro-Gly-Pro.
Selank has been investigated in laboratory research involving neurotransmission, neuropeptide metabolism and BDNF-related signaling.
02 / Research profile
Mechanistic investigations consider GABA-associated gene expression, enkephalin metabolism and BDNF-related pathways. The observations arise from distinct biochemical and preclinical models, without establishing one universal mechanism.
Selank has been investigated in laboratory models involving GABAergic neurotransmission and gene expression. Published research has examined changes in genes associated with GABA-receptor signaling, including experiments using neuronal cell models and animal systems. These findings provide mechanistic context for studying Selank's relationship with neurotransmission pathways without extending the results beyond the experimental models tested.
Laboratory research has examined Selank in relation to enzymes involved in the degradation of enkephalins, a group of endogenous regulatory peptides. In vitro experiments using human serum reported dose-dependent inhibition of enkephalin-degrading enzyme activity by Selank. These findings represent biochemical laboratory research and should be interpreted within the specific in-vitro conditions used.
Selank has also been investigated in animal models examining brain-derived neurotrophic factor, or BDNF. Published rat research has evaluated changes in hippocampal BDNF expression following experimental Selank administration. These findings establish BDNF-related signaling as an area of Selank research and should be interpreted within the specific preclinical model and experimental conditions used.
Reading the evidence
Published Selank research includes cell-based experiments, biochemical studies and animal models examining neurotransmission, GABAergic signaling, neuropeptide metabolism and BDNF-related pathways. Evidence from these different experimental systems should be interpreted according to the specific model, methodology and conditions used in each study. Findings from one experimental system should not automatically be generalized to another.
03 / Reference data
Reference specifications describe a compound. The final lot documentation identifies the material supplied.
| Compound | Selank |
|---|---|
| Research area | Nootropic Research |
| CAS number | 129954-34-3 |
| Molecular formula | C33H57N11O9 |
| Molecular weight | 751.87 g/mol |
| Physical form | Lyophilized |
| Vial options | 5 MG · 10 MG |
| Intended use | Laboratory research only |
Variant amounts are nominal catalog quantities. They are not instructions for use.
HPLC separates components under a defined method. Read the reported percentage alongside the chromatogram, wavelength, integration method, and scope of the test.
Mass spectrometry provides molecular-mass evidence. Identity and chromatographic purity answer different questions; one cannot stand in for the other.
Connect the product name, variant, lot identifier, report date, and issuing laboratory. A report is useful only when its sample can be linked to the material being reviewed.
Every Selank lot is analyzed by Nordicstar Analytical Sciences for identity, content, and purity by HPLC with LC-MS confirmation. Each certificate carries a report number and verification key that can be checked at nordicstarlabs.com/verify. Research references below describe published science, not a certificate for a vial.
Read a COA with confidence| Presentation | Lot | HPLC purity | Tested | Certificate |
|---|---|---|---|---|
| 5 MG Current lot | GLZ-26-SELANK-1051 | 99.719% | 25 Sep 2026 | NS-2026-06052 |
| 10 MG Current lot | GLZ-26-SELANK-1052 | 99.757% | 14 Sep 2026 | NS-2026-06053 |
| 5 MG | GLZ-26-SELANK-749 | 99.593% | 21 Aug 2026 | NS-2026-06175 |
| 10 MG | GLZ-26-SELANK-748 | 99.738% | 19 Aug 2026 | NS-2026-06177 |
| 5 MG | GLZ-26-SELANK-649 | 99.555% | 16 Jul 2026 | NS-2026-06176 |
| 10 MG | GLZ-26-SELANK-648 | 99.645% | 06 Jul 2026 | NS-2026-06178 |
05 / Storage & handling
Keep sealed research material protected from moisture, unnecessary light and temperature fluctuations. Use the storage conditions documented for the specific compound, formulation and lot.
Solution stability depends on solvent, concentration, container and experimental conditions. Use a validated laboratory protocol; a universal post-reconstitution shelf life is not established by the literature summaries.
Explore the handling guide06 / Common questions
Selank extends the tuftsin sequence Thr-Lys-Pro-Arg with Pro-Gly-Pro to form the heptapeptide TKPRPGP. The added residues distinguish the synthetic analogue from its parent peptide.
The cited work includes biochemical experiments on enkephalin-degrading enzyme activity, neuronal and animal systems examining GABA-related pathways, and rat studies measuring hippocampal BDNF expression.
07 / Further reading
Selected literature for context. Read each study’s methods, experimental model, and limitations alongside its findings.
Curated pairings
