★★★★★
"Purity and documentation matched perfectly"
Batch number, vial presentation, and stated specifications were all consistent. This level of QC is what keeps my research on track.
Selank
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Buyer Protection & Quality Assurance
International orders are fully protected with reship or refund coverage. All products follow documented lab procedures and include batch-verified COAs — no dilution, no hidden changes.
Lab Report Available for This Batch
Independently tested≥99% purity verifiedClick to view
Identity Confirmed
Purity ≥99%
Independent Lab Analysis
Sterility Tested
Tuftsin Analogue · Neuropeptide
The other half of the Semax equation — anxiolytic and immune-modulating where Semax is cognitive and neurotrophic.
Selank is a synthetic analogue of tuftsin, a naturally occurring immune peptide, developed at the same institute as Semax (Institute of Molecular Genetics, Moscow). While Semax focuses on BDNF and cognitive pathways, Selank works on a completely different set of targets — GABA modulation, serotonin metabolism, and immune signaling. It influences how the brain processes stress without sedation.
Published studies show Selank affects the expression of 78 genes related to inflammatory and immune processes — a surprisingly wide footprint for a heptapeptide (seven amino acids). It’s one of the few compounds that bridges the gap between neuroactive and immunomodulatory peptides, which is why it’s commonly paired with Semax to cover both sides of the equation.
Why this one matters: Semax builds neural connections (BDNF). Selank stabilizes the environment those connections operate in — GABA balance, stress response, immune signaling. Same origin institute, complementary mechanisms, different targets.
CAS Number
129954-34-3
Molecular Weight
751.87 g/mol
Molecular Formula
C₃₃H₅₇N₁₁O₉
Appearance
White Lyophilized Powder
What Sets Selank Apart
GABA and serotonin modulation — influences how the brain processes stress without causing sedation or cognitive blunting
78 immune-related genes — affects a wide range of inflammatory and immune signaling pathways despite being only 7 amino acids long
The natural Semax pair — Semax covers cognition and BDNF, Selank covers stress response and immune balance. Designed at the same institute.
Bridges two worlds — one of the few peptides studied for both neuroactive and immunomodulatory effects in the same compound
Batch Documentation
Same-Day Shipping
Discreet Packaging
Research Use Only. Not for human or animal consumption, medical use, or therapeutic application.
Buyer notice & verification standard
The peptide market includes anonymous resellers, short-lived operations, and vendors operating through private Telegram channels using inconsistent, unverifiable, or recycled documentation.
Aūra was built as a long-term alternative in a category where many suppliers appear briefly and disappear just as fast.
We operate under a strict verification standard: independent batch testing, lot-specific Certificates of Analysis, and clearly defined release thresholds. Batches that fail are rejected and never shipped — so labs know exactly what they’re receiving, every time. All orders are discreetly packaged with neutral labeling and documentation to ensure smooth, consistent delivery.
Trusted by 10,000+ researchers worldwide
Real labs. Real protocols. Trusted for consistency.
★★★★★
"Research-grade presentation throughout"
Packaging, labeling, and handling all reflect a supplier that takes compound integrity seriously. Not a corner cut anywhere.
★★★★★
"Cold chain and shipping were flawless"
Arrived sealed, temperature-controlled, and with full analytical documentation included. Exactly what a proper research supplier should deliver.
★★★★★
"Batch-to-batch consistency is excellent"
Third order, same reproducible results. Purity specs and documentation have been identical across every shipment.
★★★★★
"Full traceability on every order"
HPLC and MS data were clearly presented with complete batch tracking. That kind of transparency is rare and why I reordered.
★★★★★
"Lab-grade quality and labeling standards"
Compound identification, concentration, and storage instructions were all clearly marked. Professional-grade from supplier to bench.
Always quality-tested, verified with third-party COAs
At every stage, Aūra Peptides batches are screened by independent labs for identity, purity, sterility, and endotoxins. Each lot is released only after it meets strict research-grade specifications and is backed by a third-party Certificate of Analysis (COA) for full transparency.
This multi-step process helps ensure that what’s on the label is exactly what’s in the vial—so researchers can focus on data, not doubt.
Identity Test
PassedVerifies the peptide’s sequence and structure so the correct compound is present in each vial.
Purity Test
PassedMeasures purity and concentration to confirm ≥99% purity on qualifying batches.
Sterility Test
PassedScreens for bacteria, fungi, and other microorganisms to verify sterile handling.
Endotoxicity
PassedTests for lipopolysaccharides (LPS) to ensure endotoxin levels stay within research limits.
Why Choose Aūra Peptides
Every Aūra Peptides batch is built around one idea: you should know exactly what's in the vial. Batches are third-party analyzed, COA-backed, and fully traceable so you're not gambling on mystery compounds.
From controlled synthesis partners to batch-specific Certificates of Analysis (COAs), Aūra is designed for teams who want clean, consistent material and repeatable outcomes — not guesswork.
Each lot is produced with vetted synthesis partners and released only after passing third-party identity and purity testing (HPLC, MS or equivalent where appropriate). Batches that don't meet spec simply don't ship.
No mystery blends. Each vial is clearly labeled with peptide name, strength, lot ID, and form (lyophilized powder or solution). Batch COAs are available for every peptide so you can document exactly which material was used in each project.
Products are packaged, labeled, and shipped as research-only reference materials. All Aūra Peptides products are supplied strictly for laboratory research use only — not for human or animal consumption, medical treatment, or diagnostic procedures.
Lots are checked for appearance and practical handling characteristics such as solubility and stability under recommended storage conditions, so you spend less time troubleshooting reagents and more time running your work.
*Aūra Peptides products are sold strictly for laboratory research use only. Not for human or animal use, or any diagnostic or therapeutic application.*
You ask,
we answer.
Straightforward answers to key questions researchers commonly ask — verification, COAs, storage, and handling for research use only.
Each Aūra Peptides lot is evaluated using analytical methods such as HPLC and mass spectrometry (where applicable) to confirm identity and purity before release.
Yes — every peptide includes a batch-specific COA reporting identity confirmation, purity data, and analytical results for full research documentation.
Most Aūra peptides are supplied as lyophilized (freeze-dried) material in sealed vials labeled with peptide name, amount, and lot number for precise tracking.
Research-grade quality is standard — our peptides target ≥98% purity by HPLC unless otherwise noted. Exact purity values are listed on each COA.
Lyophilized peptides should be stored sealed, protected from moisture and light, and kept refrigerated or frozen according to the COA or product guidelines.
After reconstitution for research use, peptides are typically stored aliquoted under refrigerated or frozen conditions to maintain stability and minimize freeze–thaw cycles.
Shelf life varies by peptide, but unopened lyophilized vials stored under recommended conditions remain stable long-term. Refer to the COA for peptide-specific stability data.
