Research Peptide · For Laboratory Use Only

Selank 5mg

Tuftsin Analog · Anxiolytic & Nootropic Heptapeptide · Lyophilized Powder · Purity ≥99% (HPLC)

Selank is a synthetic heptapeptide with the sequence Thr-Lys-Pro-Arg-Pro-Gly-Pro. It was designed as a metabolically stable analog of tuftsin — the endogenous immunomodulatory tetrapeptide Thr-Lys-Pro-Arg released from immunoglobulin G — by extending its C-terminus with the protective Pro-Gly-Pro fragment.

Developed at the Russian Academy of Sciences' Institute of Molecular Genetics (the same research program that produced Semax), Selank has been studied for decades for its pronounced anxiolytic and nootropic profile — relieving anxiety and stress-related disturbances while enhancing cognition, without the sedative, muscle-relaxant or dependence-forming effects typical of benzodiazepines. Each vial is supplied as a sterile lyophilized (freeze-dried) powder to ensure maximum stability.

• Lyophilized powder: Store at -20°C for long-term stability; 2–8°C is acceptable for short-term storage. Avoid repeated temperature cycling and protect from moisture.
• Before opening: Allow the vial to reach room temperature and briefly centrifuge to ensure the full contents collect at the bottom of the vial.
• Reconstitution: Selank dissolves readily in water or physiological saline. Add solvent gently along the vial wall and swirl slowly until fully dissolved; avoid vigorous shaking.
• Reconstituted solution: Store at 2–8°C and use promptly; aliquot if needed and avoid repeated freeze-thaw cycles.
• General: Handle with standard laboratory protective equipment (gloves, lab coat, eye protection).

Q1: What is the difference between Selank and Semax?

A: Both are synthetic heptapeptides developed by the same Russian Academy of Sciences research program and both share the metabolically stabilizing Pro-Gly-Pro C-terminus, but they derive from different parent molecules and serve different research purposes. Semax is an ACTH(4–10) analog studied mainly for neuroprotection and cognition, while Selank is a tuftsin analog studied mainly for anxiolytic (anti-anxiety) and antistress effects.

Q2: What is the difference between Selank and N-Acetyl Selank?

A: N-Acetyl Selank carries an additional acetyl group on its N-terminal threonine, which further improves resistance to enzymatic degradation. The core pharmacological profile (anxiolytic and nootropic) is considered similar; the acetylated form is simply a more metabolically stable variant.

Q3: How should I store it after receiving?

A: Keep unopened vials at -20°C for long-term storage. Once reconstituted, refrigerate at 2–8°C and use promptly; aliquot and avoid repeated freeze-thaw cycles.

Q4: Is a Certificate of Analysis (COA) available?

A: Yes, third-party tested COA documentation can be provided for each batch. Please contact our customer service with your order number.

⚠ Research Use Only — Disclaimer

All product information provided on this page is solely for information dissemination and educational purposes. The products offered are intended exclusively for in vitro laboratory research and are not pharmaceuticals. They have not been approved by the U.S. Food and Drug Administration (FDA) or any other regulatory authority for the purposes sold here, and must not be used to prevent, treat or cure any medical condition, disease or ailment.

It is strictly prohibited to introduce these products into the human or animal body in any form. By purchasing, the buyer acknowledges full responsibility for the proper handling, use and compliance with all applicable local laws and regulations.