Compound comparison
Semax vs Selank
As of 2026-09-08, DMV Research compares Semax (CAS 80714-61-0) and Selank (CAS 129954-34-3) across 13 identity and analytical axes, backed by 2 published third-party certificates of analysis, for laboratory research use only.
This page sets two research neuropeptides beside each other on the facts DMV Research can evidence: registry identity, sequence, the assay each lot was tested by, and what the catalog currently lists. It states what each compound IS, not what it does, and it does not put one ahead of the other — both are supplied for laboratory research use only.
For laboratory research use only. Not for human or veterinary use. Not for diagnostic or therapeutic use. Not a drug, food, cosmetic, or dietary supplement.
Semax and Selank, side by side
Every row is read from a published record — the compound guides for identity, the per-lot certificates for the analytical results, and the live catalog for price. A dash means the fact is not published for that compound, not that it is zero.
| Axis | Semax | Selank |
|---|---|---|
| Structural class | Synthetic Neuropeptide | Synthetic Heptapeptide |
| CAS number | 80714-61-0 | 129954-34-3 |
| Sequence length | 7 residues | 7 residues |
| Molecular formula | C37H51N9O10S | C33H57N11O9 |
| Also known as | ACTH(4-7)-Pro-Gly-Pro, Met-Glu-His-Phe-Pro-Gly-Pro | TP-7, Selanke, Thr-Lys-Pro-Arg-Pro-Gly-Pro |
| Analytical method | Purity & Quant (HPLC) | Purity & Quant (HPLC) |
| Reported purity | 99.93% | 99.65% |
| Analysing laboratory | ILS Laboratories, San Diego, CA | ILS Laboratories, San Diego, CA |
| Lot on record | LOT-2026-001, analysed June 30, 2026 | 062126, analysed June 29, 2026 |
| Formulation | Lyophilized powder · 10 mg label claim · 10.73 mg measured net content | Lyophilized powder · 10 mg label claim · 10.42 mg measured net content |
| Catalog availability | Listed as a standalone product | Listed as a standalone product |
| Current price | $49.00 USD | $49.00 USD |
| Sequence | Met-Glu-His-Phe-Pro-Gly-Pro | Thr-Lys-Pro-Arg-Pro-Gly-Pro |
Verify these figures
The purity, method, lot and date rows above are transcribed from certificates DMV Research publishes in full. Open the Semax certificate record and the Selank certificate record to read each lot's own document, or the full certificate index for every lot currently held.
Identity data — CAS number, molecular formula and sequence — is the same data the Semax and Selank guides publish, and the Research Use Only scope that governs both listings is stated in full.
Frequently asked questions
What is the structural difference between Semax and Selank?
They are different molecules with separate CAS registrations: Semax is a synthetic heptapeptide derived from the ACTH(4-7) sequence with a Pro-Gly-Pro extension (CAS 80714-61-0), and Selank is a synthetic heptapeptide analog of the endogenous peptide tuftsin, also carrying a C-terminal Pro-Gly-Pro extension (CAS 129954-34-3).
Do Semax and Selank share a CAS number?
No. Semax is CAS 80714-61-0 and Selank is CAS 129954-34-3. A CAS registry number identifies one substance, so two different numbers are two different substances.
How is each compound analysed before it is listed?
Both are assayed by third-party laboratory testing for identity and purity, and the resulting per-batch certificate is published on this site.
Are Semax and Selank both listed as standalone products at DMV Research?
Yes. Both are listed individually in the catalog, each with its own per-batch Certificate of Analysis.
Does this page say which compound to pick?
No. It compares registry identity, sequence, analytical results and catalog availability only. Both compounds are supplied for laboratory research use only, and this site publishes no guidance on use, effect, or suitability for any application.
Research use only
All products are intended for laboratory and research use only (RUO) and are not for human consumption, ingestion, or any in-vivo use.
The statements on this page have not been evaluated by the FDA. For laboratory research use only. Not for human or veterinary use. Not for diagnostic or therapeutic use. Not a drug, food, cosmetic, or dietary supplement.