Selank
Selank is a synthetic heptapeptide, sequence TKPRPGP, and an analog of the endogenous peptide tuftsin, with the molecular formula C33H57N11O9 and a molecular weight of 751.89 g/mol.

Identity & structure
Verified identifiers, sequence, and analytical properties — every value machine-readable and independently sourceable against PubChem.
Primary sequence · 7 residues.
| Identity | |
|---|---|
| CAS | 129954-34-3 |
| PubChem CID | 11765600 |
| FDA UNII | TS9JR8EP1G |
| Also known as | Selank peptide, TP-7, TP 7, Selanc |
| Research class | Signaling & Neuroactive |
| Structure | |
| Molecular formula | C33H57N11O9 |
| InChIKey | JTDTXGMXNXBGBZ-YVHUGQOKSA-N |
| Sequence | TKPRPGP |
| Length | 7 residues |
| Analytical | |
| Average molecular weight | 751.89 g/mol |
| Monoisotopic mass | 751.4341 Da |
| Form | Lyophilized powder |
| Solubility | Water-soluble |
| Storage | 2–8 °C, desiccated |
Where Selank sits in its class
Molecular weight (g/mol) across the 18 characterized compounds in Signaling & Neuroactive. Compare all compounds →
Research context
Selank is a synthetic heptapeptide, sequence TKPRPGP, and an analog of the endogenous peptide tuftsin, with the molecular formula C33H57N11O9 and a molecular weight of 751.89 g/mol. It is studied in signaling and neuromodulation research and is supplied as a characterized reference material.
Supplied solely as a characterized research material. No representation is made as to any biological effect. For Research Use Only — not for human or veterinary use.
How Selank is identified
Identity and purity are measured, not asserted. Electrospray mass spectrometry (ESI-MS) determines the mass-to-charge ratio of the intact molecule — an observed value matching the expected series above confirms the molecular formula. Reversed-phase HPLC separates the sample over time, and purity is read as arithmetic: the target peak’s area as a share of total peak area.
Handling & stability
Physical form, storage, and solubility as supplied. Handling guidance only — no use protocols.
Related compounds
Other compounds in this research class.
Frequently asked questions
What is Selank?
What is the molecular formula of Selank?
What is the CAS number of Selank?
How is the identity of Selank confirmed?
How should Selank be stored?
Is Selank a peptide?
Is Selank approved for human use?
Data, tools & certificates
References
- PubChem — compound identity, structure & computed properties (CID 11765600). PubChem →
- CAS Registry Number 129954-34-3.
- FDA Global Substance Registration System — UNII TS9JR8EP1G.
Research professionals only
Selank — from the record to the bench
The monograph and every lot certificate stay public. Pricing and ordering open for verified research professionals.