Semax 10mg+Selank 10mg

Semax 10mg+Selank 10mg from the Nexus Cognitive & Nootropic catalog, supplied for controlled in-vitro research workflows.
In stock: 20mg is in stock.
Certificate pending
Final assay values publish here once independent documentation is available. See the verification process.
For in-vitro research use only. Not for human consumption.
XS20 is a Nexus-only Semax/Selank research blend. Component-level chemistry should come from the individual parent compound records.
Semax 10mg+Selank 10mg definition
XS20 is a Nexus-only Semax/Selank research blend. Component-level chemistry should come from the individual parent compound records. Semax 10mg+Selank 10mg is classified as a multi-peptide blend. Blend of Semax and Selank; no single molecular formula or molecular weight applies. Supplied for controlled in-vitro research workflows.
No sequence is listed in the current catalog record for this product.
- CAS
- N/A
- MW
- Not listed
- Sequence
- Not listed
- Half-life
- Not listed
- Formula
- Not listed
- Purity
- Certificate pending
- Form
- Lyophilized powder
- Class
- Multi-peptide blend
This lyophilized research material is commonly paired with bacteriostatic water for reconstitution workflows.
Bacteriostatic water for reconstitutionThe dossier.
Compound Overview
Research Use Only. Not for Human Consumption.
Semax 10mg+Selank 10mg is a Nexus-only multi-peptide research blend supplied as a 20mg lyophilized powder configuration. The blend contains two listed components: Semax at 10mg and Selank at 10mg. Within the source record, Semax is identified as an ACTH-fragment analog component, while Selank is identified as a tuftsin analog component.
This product is assigned to the Cognitive & Nootropic category and is listed under SKU XS20. The source data describes the material as a blend rather than a single compound, so there is no single molecular formula, molecular weight, sequence, or CAS number that applies to the complete product. Component-level chemistry should be reviewed through the individual parent compound records rather than inferred at the blend level.
Because the current product record for this exact blend is intentionally limited, this page does not add unsupported chemistry, analytical values, literature claims, dosage language, or human-use guidance. All information below is restricted to the product and research data supplied for this Nexus catalog item.
Research Background & Published Literature
The available research file identifies XS20 as a Nexus-only Semax/Selank research blend. It does not provide blend-specific citations, experimental abstracts, mechanism summaries, or published literature entries for this exact 10mg+10mg configuration. For that reason, no peer-reviewed citations are listed here and no component-level research claims are repeated without direct source support.
The source record does specify that a Certificate of Analysis should verify both component identities and mass allocation for this blend. That distinction matters for multi-peptide materials: the analytical review should address the presence of each named component rather than treating the item as a single molecule with one formula, one molecular weight, or one sequence.
Researchers evaluating this product should treat it as a blend record. Any study design, analytical method, or comparison workflow should separately account for the Semax component and the Selank component using validated laboratory procedures and the applicable parent-compound references available to the research team.
Researchers reviewing the literature around this compound can use the peer-reviewed resources below for additional context on mechanism of action, signaling pathways, and controlled laboratory research applications:
- Gusev et al. (2018) — Zh Nevrol Psikhiatr Im S S Korsakova
- Liu et al. (2025) — Br J Pharmacol
- Vyunova et al. (2018) — Protein Pept Lett
- Panikratova et al. (2020) — Dokl Biol Sci
Storage, Handling & Stability Guidelines
Store lyophilized Semax 10mg+Selank 10mg material at -20°C, desiccated, and protected from light. These conditions are the only storage parameters provided in the source record for this exact blend.
After reconstitution, aliquot the material and avoid repeated freeze-thaw cycles. The source record does not specify a reconstituted shelf life, diluent, working concentration, or post-reconstitution storage duration, so those details should be controlled by validated laboratory SOPs rather than inferred from this page.
- Maintain protection from moisture and light during storage and handling.
- Use aliquoting practices to reduce repeated freeze-thaw exposure after reconstitution.
- Do not assign a blend-level molecular weight, formula, CAS number, or sequence unless confirmed by a validated source.
- Retain internal handling records that identify the product name, SKU, total blend amount, and date of reconstitution when applicable.
Lab Verification
Nexus maintains a Lab Verified workflow for research materials. For this exact blend, the current product record does not include batch-specific COA attributes, normalized purity values, retention data, mass-found values, batch identifiers, or test dates. No exact COA values are therefore stated on this page.
For a multi-peptide blend such as Semax 10mg+Selank 10mg, lab verification should address both component identities and mass allocation. In general terms, HPLC/MS verification can support chromatographic review and mass-spectrometry identity confirmation, but any exact result must come from the applicable batch COA rather than from a generated product description.
Shipping
Orders ship within the United States via USPS; international orders are not accepted. Compounds are supplied as lyophilized research material — follow the storage and reconstitution guidance on the product page and its Certificate of Analysis.
Compound details.
- Class
- Multi-peptide blend
- Physical Form
- Lyophilized powder
- Storage
- Store lyophilized material at -20C, desiccated and protected from light. After reconstitution, aliquot and avoid repeated freeze-thaw cycles.
Research context.
Semax 10mg+Selank 10mg is studied in preclinical research models examining mechanisms relevant to the neuroactive, nootropic, and cognitive research compounds. Independently verified Nexus Laboratory batches are documented through third-party HPLC purity verification, mass spectrometry identity confirmation, and endotoxin context where applicable; lots awaiting final documentation are labeled certificate pending. Compounds are supplied strictly for in-vitro and analytical research use.
Verification standard.
Independently verified Nexus Laboratory batches ship with a Certificate of Analysis documenting HPLC purity (target ≥98%), mass spectrometry identity (expected versus observed mass), and endotoxin context where applicable — verified by independent third-party laboratories and publicly archived; lots awaiting final documentation are labeled certificate pending instead of showing assay values. Review Nexus lab verification.
Certificate status.
Finalized independent certificate documentation is pending for this catalog record. Measurement details remain withheld until the certificate is available.
- Sequence
- Not listed
- Model preview
- Unavailable
Molecular model preview is unavailable for this catalog record.
The chemistry.
Blend of Semax and Selank; no single molecular formula or molecular weight applies.
Storage: Store lyophilized material at -20C, desiccated and protected from light. After reconstitution, aliquot and avoid repeated freeze-thaw cycles.
Technical specifications.
- Product Name: Semax 10mg+Selank 10mg
- Classification: Multi-peptide blend
- Structural Description: Blend of Semax and Selank; no single molecular formula or molecular weight applies.
- CAS Number: Not confirmed
- Molecular Weight: Not applicable / not confirmed
- Molecular Formula: Not applicable / not confirmed
- Physical Form: Lyophilized powder
- Intended Use: In-vitro research use only - not for human consumption
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Research notes.
Semax 10mg+Selank 10mg research FAQ.
What is Semax 10mg+Selank 10mg used for in research?
Semax 10mg+Selank 10mg is supplied for controlled in-vitro research workflows in the Cognitive & Nootropic category. It is not labeled for human or veterinary use.
Is Semax 10mg+Selank 10mg HPLC verified?
Semax 10mg+Selank 10mg is listed with certificate-pending status until a finalized independent COA record is available.
Which Semax 10mg+Selank 10mg sizes are available?
Current Nexus variants include 20mg.
Does Semax 10mg+Selank 10mg include a COA?
The current Nexus record marks Semax 10mg+Selank 10mg as certificate pending; finalized assay values are not shown until independent documentation is available.