| Test | Method | Limit | Result |
|---|---|---|---|
| Purity | HPLC | ≥ 99.0% | 99.24% |
| Identity | Mass spectrometry | 751.9 ± 1.0 Da | 751.9 Da |
| Net content | Quantitative HPLC | ≥ 10 mg | 10.11 mg |
| Endotoxin | LAL assay | ≤ 0.5 EU/mg | 0.07 EU/mg |
| Sterility | Membrane filtration | No growth | No growth |
| Heavy metals | ICP-MS | ≤ 10 ppm total | 0.7 ppm |
| Moisture | Karl Fischer | ≤ 8.0% | 3.5% |
Synthetic tuftsin-derived heptapeptide
C33H57N11O9
751.88 Da · 7 residues
Neural · Synthetic tuftsin-derived heptapeptide
10 mg to 60 mg · 7 residues · 751.88 Da
Size$6.00/mg
Quantity10+ of one compound: 40% off
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For in-vitro research use only. Not for human or animal use.
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GLP-2 TZ 10 mg01Verified test results
Selank lot SA-SLK-2610 was tested Oct 8, 2026 at an independent laboratory before it shipped. Every value is printed against its limit, so a pass means something.
Certificate of analysis
99.24%
Purity by HPLC
Profile drawn from the reported purity
Purity by HPLC, identity by mass spectrometry, net content by quantitative HPLC, endotoxin by LAL, sterility by membrane filtration, heavy metals by ICP-MS and moisture by Karl Fischer. Report SA-SLK-2610-01, Oct 8, 2026. Open the lot record.
Open any lot's certificate. Your order ships from the current released lot, and its QR code opens this record.
99.24%
HPLC purity
Tested Oct 8, 2026 · 7/7 assays · sample
99.42%
HPLC purity
Tested Sep 10, 2026 · 7/7 assays · sample
02Verify your vial
Every vial label carries a QR code. Point your phone camera at it.
The code opens that lot's certificate with every assay value. No phone? Type the lot from your packing slip on Verify a lot.
Each signed certificate links to the lab's own verification page, so the report can be confirmed independently of us.
03Analytical identity
Studied in neuropeptide-signalling models in vitro.
| Compound | Synthetic tuftsin-derived heptapeptide |
|---|---|
| Formula | C33H57N11O9 |
| Molecular weight | 751.88 Da |
| Residues | 7 |
| CAS | 129954-34-3 |
| Form | Lyophilised powder, 10 mg, 60 mg |
| Storage | Sealed at -20 °C, away from light and moisture |
Sequence
Side-chain composition
Every heavy atom is placed from the sequence with ideal bond lengths and angles, so the connectivity is exact. The pose is idealised (an extended chain) and is not a measured conformation. Identity for each lot is confirmed on its certificate.
Structure viewer04In the lab
No dedicated receptor for Selank has been identified. In laboratory research it slows enkephalin breakdown by serum enzymes, acts as a positive allosteric modulator of GABA binding, and shifts expression of inflammation-related genes.
Compound
SelankSynthetic tuftsin analog, Thr-Lys-Pro-Arg-Pro-Gly-ProHuman serum
Endpoint studied
Inhibited enkephalin-degrading serum enzymes (IC50 20 µM), more strongly than puromycin or bacitracin.
Kost 2001 · PMID 11443939Brain cell membranes
Endpoint studied
In radioligand assays Selank acted as a positive allosteric modulator of [3H]GABA binding.
Vyunova 2018 · PMID 30255741Spleen tissue
Endpoint studied
34 of 84 inflammation-related genes changed; Bcl6 shifted with Selank and with each of its fragments.
Kolomin 2011 · PMID 21609736Pathways as reported in the cited laboratory studies. For in-vitro research use only.
05Research history
5 milestones, each linked to its PubMed record
Bioorganicheskaia Khimiia
Selank and Semax inhibit enkephalin-degrading enzymes in human serum; pentapeptide fragments act too, shorter fragments do not.
PubMed · PMID 11443939Regulatory Peptides
Expression of 34 of 84 inflammation-related genes shifts in spleen tissue, with Bcl6 changing under Selank and its fragments.
PubMed · PMID 21609736Frontiers in Pharmacology
In frontal cortex, 45 of 84 neurotransmission genes changed 1 hour after Selank, correlating with changes seen after GABA.
PubMed · PMID 26924987Protein and Peptide Letters
Radioligand work shows Selank acting as a positive allosteric modulator of [3H]GABA binding in brain cell membranes.
PubMed · PMID 30255741Bulletin of Experimental Biology and Medicine
In an ethanol exposure model, Selank prevented memory disturbances and an ethanol-induced rise in hippocampal and frontal cortex BDNF.
PubMed · PMID 31625062 LatestLaboratory research only, cited for research context. Not a claim about use in people.
06Questions
About Selank, its certificate and your order.
Email [email protected], Monday to Friday. A person replies within one business day.
The current released lot, SA-SLK-2610. Scan the QR code on the vial label to open its certificate. The lot number is also on your packing slip, and the full certificate is here.
Every certificate is issued by an independent laboratory. Each lot has its own public record page with every assay value, and a link to verify the report on the lab's own site once the signed PDF is posted.
Vials are filled slightly over the labelled mass so that every vial meets it. Net content is measured on each lot and published as a number, not a pass.
Email [email protected] within 7 days with your order number and a photo and we will replace it.
Orders by 2 PM ET on a weekday ship the same day, with tracking emailed when the label prints.
No. It is sold strictly for in-vitro laboratory research and is not for human or animal use of any kind.
07Complete the box
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