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Selank is a synthetic heptapeptide based on tuftsin, a naturally occurring tetrapeptide (Thr-Lys-Pro-Arg) found as a fragment of the immunoglobulin G heavy chain. First described in the late 1990s, it extends tuftsin with a Pro-Gly-Pro tripeptide tail to resist enzymatic breakdown. The compound has the molecular formula C33H57N11O9, a weight of 751.87 g/mol, and CAS number 129954-34-3. Also designated TP-7, it is supplied as a white to off-white lyophilized powder, readily soluble in water. The Pro-Gly-Pro extension resists cleavage by prolyl endopeptidases, giving Selank greater persistence than native tuftsin. This product is strictly for research purposes only.
ℹ️ Note: 1 kit includes 10 vials
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Selank is a synthetic heptapeptide — a chain of seven amino acids — with the sequence Thr-Lys-Pro-Arg-Pro-Gly-Pro. It was first described in the late 1990s. Structurally, Selank is based on tuftsin, a naturally occurring tetrapeptide (Thr-Lys-Pro-Arg) that is a fragment of the heavy chain of immunoglobulin G (IgG). The design extended tuftsin by adding a Pro-Gly-Pro tripeptide tail — the same stabilizing extension used in Semax — to slow enzymatic degradation.
The compound has the molecular formula C33H57N11O9, a molecular weight of 751.87 g/mol, and a CAS number of 129954-34-3. It is also known by the designations TP-7 and Selanc. Selank is supplied as a white to off-white lyophilized powder that is readily soluble in water. The Pro-Gly-Pro motif resists cleavage by prolyl endopeptidases, which gives Selank greater stability in solution compared to the parent tuftsin fragment, which is rapidly degraded.
This product is strictly for research purposes only. Not approved for human or animal use.
PubChem Reference: View compound profile on NIH PubChem
Formula: C₃₃H₅₇N₁₁O₉
Weight: 751.87 g/mol
CAS: 129954-34-3
Sequence: Thr-Lys-Pro-Arg-Pro-Gly-Pro
Form: White to off-white lyophilized powder
Solubility: Readily soluble in water
Storage: Keep refrigerated 36‑46 °F (2‑8 °C); reconstituted solution at 35-46°F (2-8°C)
Also Known As: TP-7
| Weight | 5mg, 10mg |
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Chloe Zhang –
Finally a reliable Selank source. The CAS number matched, packaging was professional, and international shipping took only 8 days. My research protocols depend on consistent peptides, and this delivered
Nathan Price –
Excellent product. Selank arrived with a clear label, proper handling instructions, and vacuum-sealed cap. Our lab has seen reproducible results across multiple trials. Will definitely order again
Isabella Russo –
Third time ordering Selank from PeptidesVital. Every batch has been consistent lyophilized powder with no clumping. Free shipping over $200 is a bonus. Trustworthy vendor for research peptides.
Marcus Webb –
Great experience from start to finish. Selank reconstituted clearly and worked as expected in our lab models. Customer support answered my questions about storage quickly. Highly recommended
Ethan Brooks –
Ordered Selank for the first time from PeptidesVital. Very impressed with the quality no issues with solubility. The 99% purity claim seems accurate based on my initial tests. Will be back for more
Olivia Martinez –
Selank has been a great addition to my research on stress-related pathways. The peptide arrived lyophilized perfectly, and purity looks excellent. Shipping was fast, and the vial was well sealed