Selank is a synthetic heptapeptide analog of endogenous tuftsin — the naturally occurring immunomodulatory tetrapeptide Thr-Lys-Pro-Arg — extended at the C-terminus with a protease-stabilizing Pro-Gly-Pro tripeptide. Like its sister-compound Semax, Selank was developed and extensively characterized in the Russian neuroscience literature.

ProSource Labs supplies SELANK in the following available vial sizes: 10mg. Each SELANK vial contains pure lyophilized peptide — no fillers, no bulking agents. Product SKU references: SLAN-10MV.

• Peptide class: Synthetic 7-amino-acid analog of endogenous tuftsin with Pro-Gly-Pro C-terminal extension
• Residue count: 7 amino acids
• Molecular weight: ~751 Da
• Sequence: Thr-Lys-Pro-Arg-Pro-Gly-Pro
• Heptapeptide tuftsin analog with Pro-Gly-Pro C-terminal stabilization
• 7 amino acids; MW ~751 Da
• Preclinical anxiolytic + immunomodulatory literature
• Water-soluble — dissolves readily in neutral aqueous diluents

Batches are characterized by ESI mass spectrometry to confirm molecular weight against the theoretical value, with amino-acid sequence confirmation on selected QA lots. Peptide content assay distinguishes net peptide mass from residual counter-ion salt.

Lyophilized SELANK vials should be stored at -20°C (or colder) in a laboratory freezer, inside the sealed factory container. Minimize warm-up cycles — move only the specific vial needed for a given experiment out of frozen storage at a time.

All laboratory handling of SELANK should follow the receiving institution's SOPs and applicable peer-reviewed protocols relevant to the researcher's specific experimental question. ProSource Labs does not publish end-user preparation or usage instructions.

Every batch of SELANK released by ProSource Labs undergoes independent reverse-phase High Performance Liquid Chromatography (HPLC) — the industry-standard analytical method for this class of research compound. Target chromatographic purity is typically ≥ 99%.

Additional characterization may include ESI mass spectrometry for molecular weight confirmation, Karl Fischer titration for residual moisture, and appearance/solubility inspection. A batch-specific Certificate of Analysis (COA) is available on request through customer support after purchase.

Each production lot of SELANK is quarantined pending analytical release, tested against documented purity, identity, and moisture acceptance criteria, and only released to sellable inventory after passing every QA checkpoint. Batches that fail any single criterion are quarantined and never reach customer-facing inventory.

If a vial of SELANK you received from ProSource Labs ever fails your own institution's incoming QA testing, contact customer support at support@prosourcelabs.org — we retain samples of every batch for cross-verification.

Selank is used in preclinical rodent research on anxiolytic pathways, GABAergic signaling, and immunomodulation. Published preclinical literature has examined Selank effects on rodent anxiety-behavior models, cytokine expression profiles, and neurotransmitter system modulation. Its small water-soluble peptide structure makes it a convenient research compound for both in vivo rodent and cell-culture experimental designs.

SELANK vials ship in tamper-evident, moisture-resistant, cold-chain-friendly outer packaging from our Southern California distribution facility for fast US domestic delivery — typically 2-4 business days coast-to-coast, with expedited options available at checkout.

Every SELANK shipment is discreet — the outer packaging carries no product-specific branding or direct reference to the compound name inside, protecting researcher privacy. Tracking numbers are emailed automatically. For institutional or high-volume orders, dedicated wholesale pricing is available through the wholesale portal.