Research-grade compound. Laboratory use only. Not intended for human or animal use, ingestion, or injection. No medical claims are made or implied.
≥98% PuritySupplier batch spec · ≥98% (class spec)
Cyclic and Neuropeptide Research CompoundsSKU: CP-XS20
Semax + Selank Blend 20mg
≥98% PuritySupplier batch spec; selected lots Janoshik-tested
€39.99In Stock
Delivers to EU in 11-14 business days
Free shipping over €200 · no customs paperwork (EU) · via EU carrier network
Research-grade Semax + Selank Blend. ≥ 98% supplier batch specification; selected lots independently tested (99.3% avg across published reports). Lyophilized powder in sealed glass vial. For laboratory research use only. Not for human consumption.
Volume PricingApplied automatically at checkout
| Quantity | Price Each | Total | Savings |
|---|---|---|---|
| 1 unit | €39.99 | €39.99 | -- |
| 3+ | €37.99 | €113.97 | 5% off |
| 5+Most Popular | €35.99 | €179.95 | 10% off |
| 10+ | €33.99 | €339.92 | 15% off |
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Total: €39.99
Free shipping on orders over €200
Important Notice
This product is intended for laboratory and research use only. Not for human or veterinary use. By purchasing, you confirm this product will be used exclusively for in-vitro research purposes.
Reconstitution Required
This peptide ships lyophilized (dry powder) and requires bacteriostatic water to reconstitute before use. BAC water is sold separately.
When This Product May Not Suit Your Research
- ⚠If your research requires GMP-grade material for clinical applications — research-grade peptides are not intended for clinical use.
- ⚠If your lab lacks proper cold storage (-20°C freezer) — this peptide's stability may be compromised at higher temperatures.
- ⚠If your study protocol requires FDA-approved reference standards — contact USP or a certified reference material provider.
Purity HPLC
99.3% average HPLC purity, verified by independent third-party testing
Third-Party Tested
Janoshik report published when available
Fast Shipping
24h dispatch, EU-wide shipping from €4.99
Third-Party Tested
Supplier batch specification on every product; independent Janoshik report on selected lots
Last reviewed: 2026-06-10
About Semax + Selank Blend 20mg
Semax + Selank Blend combines two Russian-developed nootropic peptides with different but complementary mechanisms in a single vial (10mg each, 20mg total). Both were developed by the Institute of Molecular Genetics of the Russian Academy of Sciences and have an unusually long research history in Russia and Eastern Europe -- a distinction that provides some pharmacology data, even if that literature predates modern trial standards.
Semax is a synthetic heptapeptide derived from the ACTH(4-7) sequence with a methionine-glutamate-histidine-phenylalanine extension that increases its stability and bioactivity. In research models it is studied for its role in BDNF and NGF pathways -- upregulating brain-derived and nerve growth factors. Research effects include neuroprotection, acetylcholinergic and neuropeptidergic receptor binding in memory consolidation models, and attention-related parameters. Semax has been studied in models of ischemic injury, which provides some translational context, though the evidence base is not equivalent to Western Phase III trial standards.
Selank is derived from tuftsin, an endogenous immunoregulatory peptide, with a GABA-B receptor component that gives it anxiolytic-like activity in research models. It modulates GABA system activity and reduces anxiety-like behavior in rodent models without the sedation or dependence potential associated with benzodiazepines. Selank also has immunomodulatory properties and has been studied for stress-induced immune suppression in animal models.
The combination addresses both acetylcholinergic and neuropeptidergic receptor binding (Semax) and anxiety/stress modulation (Selank) -- complementary rather than redundant mechanisms in the context of cognitive performance research.
Specifications
| Parameter | Value |
|---|---|
| Component 1 | Semax 10mg (ACTH(4-7) derivative) |
| Component 2 | Selank 10mg (Tuftsin analogue) |
| Total per Vial | 20mg combined |
| Purity | ≥98% (supplier batch spec; 99.3% avg across independently tested lots, each component) |
| Format | Lyophilized powder, single-use vial |
| Storage | -20°C before reconstitution; 2-8°C after |
Storage
Store at -20°C before reconstitution. Refrigerate at 2-8°C after reconstitution and use within 28 days. Both peptides are stable under proper conditions but should be protected from light and heat.
What is the mechanism of Semax as a nootropic?
Semax is derived from the ACTH(4-7) sequence -- the minimal active fragment of adrenocorticotropic hormone -- modified for stability. Its primary documented mechanisms in research models involve upregulation of BDNF and NGF, neurotrophins that support neuronal survival, plasticity, and function. In rodent models it enhances learning, memory consolidation, and attention-related parameters. It also has documented neuroprotective effects in ischemia models, which is an active area of preclinical research.
How does Selank differ from conventional anxiolytics?
Selank modulates GABA system activity and has anxiolytic-like effects in rodent models, but it does not appear to act through the benzodiazepine binding site on GABA-A receptors. Benzodiazepines produce sedation, cognitive impairment, tolerance, and dependence via positive allosteric modulation at GABA-A. Selank's mechanism appears different -- it has GABA-B components and immunomodulatory effects that are not part of benzodiazepine pharmacology. In research models, Selank reduces anxiety-like behavior without the sedation or motor impairment typically associated with classical anxiolytics.
Are these peptides available as nasal sprays in Russia?
Yes. Both Semax and Selank are commercially available as intranasal sprays in Russia and some Eastern European countries, where they have regulatory approval for specific indications. The intranasal route provides efficient delivery to the CNS via the olfactory pathway, which is particularly relevant for peptides that have limited blood-brain barrier penetration via systemic routes. This product contains the lyophilized peptides for reconstitution in research applications.
Semax + Selank Blend is supplied for laboratory research use only. Not approved for human use. Handle in compliance with institutional biosafety guidelines.
Specification Summary
Purity99.3% avg
FormLyophilized Powder
Storage-20\u00B0C
Researcher Confidence
Why researchers choose CertaPeptides
Who actually tests this?
Selected lots are independently verified by Janoshik Analytical (Czech Republic) and published on the Janoshik public portal. Other lots ship with the supplier's batch specification. See /coa for the published wall.
View COAs →What if I get the wrong batch?
Every bottle label carries a lot number that maps to a specific Certificate of Analysis. If a batch fails spec, we don't ship it — full stop.
View COAs →Where does it ship from?
Romania (EU). We are CERTALAB SRL, CUI 54169956, VAT-registered. Sameday for Romania, TCE Worldwide for all cross-border EU and non-EU markets (UK, Switzerland, Norway, Iceland, Israel, Serbia). Delivery 1–14 business days depending on destination — exact window shown at checkout.
Shipping details →What if there's a problem?
You have a 14-day withdrawal right under OUG 34/2014 (Romanian/EU consumer law), with ANPC/ODR escalation available. Contact us at support@certapeptides.com.
Returns policy →Product Information
This product is intended for scientific research and development purposes only. It is a chemical substance that shall not be used as a drug, medicine, active substance, or ingredient in any product intended for human or animal consumption. Researchers must handle this compound in accordance with their institutional biosafety guidelines. Use only in properly equipped laboratory settings with appropriate personal protective equipment.
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