Selank (5mg) Lot SEL5N022626: Certificate of Analysis (COA)
Paramount Peptides · tested Apr 16, 2026 by Janoshik · Older lot
This page summarizes the third-party lab report for lot SEL5N022626 of Selank (5mg) sold by Paramount Peptides. The lot number on this page should match the lot printed on the vial label. Don't rely on this summary alone: use the button to open the lab's own record and compare the lot, date and results.
Selank (5mg) lot SEL5N022626 test results, explained
Every result printed on this certificate, as reported by Janoshik, with a plain-English note on what the test measures. "Pass" and "specification" wording comes from the certificate; where the lab prints no pass/fail, we say so.
| Test | Result on the certificate | What it measures | This lot |
|---|---|---|---|
| HPLC purity | 99.597% · Per vial: 99.615%; 99.611%; 99.597% (lowest, 99.597%, shown) | HPLC separates the sample into its components; purity is the share of the detected signal that sits in the main peak. On its own it doesn't show which molecule that peak is. That's what the identity test is for. | No pass/fail printed; reported value at or above 98% |
| Identity | Not reported | This certificate doesn't report an identity test, so it doesn't confirm which molecule is in the vial. Purity and quantity alone can't tell you that. | Not tested on this certificate |
| Quantity (measured content) | Selank 6.24 mg; 6.09 mg; 6.08 mg. | How much peptide the lab measured in the vial, compared with the amount printed on the label. | Reported |
Lot and report details
| Lot / batch number | SEL5N022626 |
|---|---|
| Product (as labeled by vendor) | Selank (5mg) |
| Labeled vial size | 5 mg |
| Testing laboratory | Janoshik |
| Testing ordered | Apr 13, 2026 |
| Sample received by lab | Apr 15, 2026 |
| Report date | Apr 16, 2026 |
| Task number + unique key | Task #147309, key YXBFYDYC8LE6 |
| Lab-record check | Not checked automatically. Open the lab's record to compare. |
| Vendor | Paramount Peptides |
| Verify | Open Janoshik's record ↗ |
The certificate itself
About Janoshik
An independent analytical lab based in Prague, Czech Republic (Janoshik s.r.o.). Each report carries a task number and a unique verification key.
Accreditation: No accreditation is printed on these reports, and we found no published ISO/IEC 17025 accreditation for the lab (checked Oct 7, 2026).
Tests: On the reports here: HPLC purity and the measured content per vial. Other tests appear only when they're listed under Results.
How to verify: Go to janoshik.com/verify and enter the unique key printed on the report (the report's QR code links there too). Janoshik blocks automated checks, so we haven't matched these records ourselves.
Open Janoshik's record ↗Lab info from: janoshik.com · checked Oct 7, 2026.
Compound reference: Selank
- Also called
- TP-7; Thr-Lys-Pro-Arg-Pro-Gly-Pro
- Sequence
- TKPRPGP (7 residues)
- Formula
- C33H57N11O9
- Mol. weight
- 751.9 g/mol
- CAS
- 129954-34-3
- Source
- PubChem CID 11765600 ↗
A synthetic heptapeptide: the tetrapeptide tuftsin (Thr-Lys-Pro-Arg) extended with Pro-Gly-Pro. Reference data only; it describes the molecule, not any use of it. For laboratory research use only.
Selank (5mg) lot history at Paramount Peptides
All 4 certificates we have for this product from Paramount Peptides, newest first. The chart plots HPLC purity by report date (lots without a purity figure are left out). This lot is highlighted.
| Lot | Report date | Lab | HPLC purity |
|---|---|---|---|
| SEL12142025-S | Jul 6, 2026 | Accumark Labs | 99.66% |
| SEL5N022626 | Apr 16, 2026 | Janoshik | 99.60% |
| SEL5N082725 | Sep 12, 2025 | Janoshik | 99.86% |
| HSLK-0002 | Nov 7, 2024 | Janoshik | Not reported |
Also available from Peptira
Selank is also carried by Peptira, our other tested supplier. These are the most recent Selank certificates we have from them; each links to its own lot page.
| Product | Lot | Report date | Lab | HPLC purity |
|---|---|---|---|---|
| Selank Vial 10 mg | SLNK10-004 | Jan 1, 2026 | Freedom Diagnostics | 99.77% |
| Selank Vial 10 mg | SLNK10-003 | Nov 20, 2025 | Freedom Diagnostics | 99.75% |
| Selank Vial 10 mg | SLNK10-002 | Sep 12, 2025 | Freedom Diagnostics | 99.81% |
| Selank Vial 10 mg | SLNK10-001 | Jul 16, 2025 | Janoshik | 99.82% |
Where to get lab-tested Selank: products, sizes and latest COAs →
What to check on your vial
- The lot number on the vial label reads SEL5N022626, character for character.
- The product name and vial size on the label match Selank (5mg) (5 mg).
- The lab's own record (www.janoshik.com, code Task #147309, key YXBFYDYC8LE6) shows the same lot, report date (Apr 16, 2026) and results as this page.
- The report date is a date you'd expect for your purchase: a much older certificate may belong to an earlier lot.
- The identity line names the compound you expect. If it's "Not reported", the certificate doesn't confirm which molecule is in the vial.
- The certificate is a clean document: no mismatched fonts, edited numbers or a missing verification code.
How to check this COA in under a minute
- Find the lot number on your vial label and confirm it reads SEL5N022626.
- Open Janoshik's record with the button above, or go to www.janoshik.com and enter Task #147309, key YXBFYDYC8LE6.
- Compare the lot number, test date, purity and identity result with the table above. They should be identical.
- New to COAs? Read How to read a peptide COA for what HPLC purity and mass spec identity mean.
Questions about lot SEL5N022626
What HPLC purity did Selank (5mg) lot SEL5N022626 test at?
Janoshik reported 99.60% HPLC purity for lot SEL5N022626 in a report dated Apr 16, 2026.
How do I verify the COA for lot SEL5N022626?
Go to www.janoshik.com and enter the task number + unique key Task #147309, key YXBFYDYC8LE6. The lab's own record should show lot SEL5N022626 with the same dates and results as this page.
Is lot SEL5N022626 the newest Selank (5mg) lot from Paramount Peptides?
No. The most recent Selank (5mg) certificate we have from Paramount Peptides is lot SEL12142025-S. Your vial label tells you which lot you have.
Does this certificate apply to my vial?
Only if the lot number printed on your vial reads SEL5N022626 exactly. A certificate of analysis covers one lot; it says nothing about other lots of the same product.
Other lots and COAs
Selank (5mg) at Paramount Peptides
Lab-tested lot SEL5N022626 · 99.60% HPLC purity · Janoshik
Affiliate disclosure: We earn a commission if you buy through the vendor links on this page, at no extra cost to you. Peptides & Coffee is an independent COA reference and is not owned by or affiliated with the vendors or labs listed. Lab results are published by the vendors and labs; we link to each lab's own verification record so you can check them yourself. Stock and lots change: the vendor may be shipping a newer lot than the one on this page, so check your vial label.