Cognitive & Mood
Selank
5mg / vial
A synthetic heptapeptide (Thr-Lys-Pro-Arg-Pro-Gly-Pro) related to the endogenous immunopeptide tuftsin. Studied for immune-modulatory signaling, stress adaptation, neurotransmitter system influences, and anxiety-related behavioral endpoints in preclinical models.
$84.99
Size
≥98% Purity
Third-party verified
Cold-Chain Shipping
Free on every order
COA Included
HPLC · LC-MS · NMR
Same-Day Shipping
Orders before 1PM EST
For Research Use Only. Not for human or animal consumption. Not a drug, food, or cosmetic. For in vitro laboratory research by qualified researchers only.
Areas of Investigation
Research Applications
Anxiety
Anxiolytic Research
Studied for anti-anxiety effects through modulation of GABA neurotransmission and enkephalin metabolism without sedation or dependence.
Immunity
Immune Modulation
Investigated for its effects on immune cell function derived from its tuftsin-based structure, supporting balanced immune responses.
Cognition
Cognitive Enhancement
Researched for nootropic effects on memory and learning through BDNF upregulation and neurotransmitter modulation.
Neurotransmitters
Neurotransmitter Research
Explored for effects on GABAergic, serotonergic, and dopaminergic systems in preclinical models.
Technical Data
Compound Profile
Full compound characterization including molecular structure, physical properties, storage requirements, and stability data for research use.
≥98% Purity Guaranteed
HPLC · LC-MS · Third-Party Verified
Sequence
Thr-Lys-Pro-Arg-Pro-Gly-Pro (TKPRPGP)
Molecular Formula
C₃₃H₅₇N₁₁O₉
Molecular Weight
751.87 g/mol
Appearance
White lyophilized powder
Storage (Lyophilized)
Below −20°C, desiccated, away from light and moisture
Storage (Reconstituted)
Refrigerate at 2–8°C; use within 28 days. Aliquot for extended storage below −20°C.
Shelf Life
24 months from manufacture date
Third-Party Verified
Certificate of Analysis
99.37%
PURITY
Selank · Batch A
TAP TO VIEW FULL COA
Batch Analysis Report
Lot Number
PLQ-SELAN-2601-A
Labeled Amount
5mg
Actual Amount
5.26mg
Testing Date
01/24/2026
Tested By
Apex Analytics Lab (Third-Party)
Methods
HPLC · LC-MS · NMR · FTIR
Full COA documentation is included with every order. COAs are batch-specific and reflect the exact lot shipped. Independent third-party verification ensures unbiased purity and identity confirmation.
Protocol
Storage & Handling
Long-Term Storage
Store lyophilized peptide at −20°C. Under these conditions the product remains stable for up to 24 months from the date of manufacture.
After Reconstitution
Once reconstituted, store at 4°C and use within 30 days. Avoid repeated freeze-thaw cycles as this may degrade compound integrity.
Shipping Conditions
All orders ship in insulated packaging with cooling packs to maintain the cold chain during transit. Free on every order, no minimum required.
Support
Frequently Asked Questions
Tuftsin is a naturally occurring tetrapeptide (Thr-Lys-Pro-Arg) produced by cleavage of immunoglobulin G, involved in immune activation and phagocytosis. Selank extends the tuftsin sequence with Pro-Gly-Pro to enhance metabolic stability, creating a heptapeptide studied for both immune-modulatory and neuroactive properties.
Selank has been approved in Russia for the treatment of anxiety and neurasthenia, and has been studied extensively in CIS countries. It does not have FDA or EMA approval. Our research-grade selank is strictly for in vitro laboratory research. Not for human or animal consumption.
Selank is primarily studied for immune modulation, GABAergic anxiolytic effects, and stress adaptation. Semax focuses on neuroprotection, BDNF upregulation, and cognitive enhancement via ACTH-related CNS pathways. They address complementary neuroimmune mechanisms and are frequently co-researched.
Add bacteriostatic water slowly along the vial wall, gently swirl until dissolved. Selank dissolves readily. Use our Reconstitution Calculator for volume guidance.
Our selank is verified at ≥98% purity via third-party HPLC analysis. The current batch is confirmed at 99.37% by Apex Analytics Lab. A full COA ships with every order.
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