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Signaling & NeuroactiveOpen access · public

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.

CAS 129954-34-3Mol. weight 751.89 g/molResearch Use Only
2D structure of Selank (PubChem CID 11765600)
2D structure via PubChem (CID 11765600). Public domain.
Computed 3D conformation (illustrative) · from the verified structure.

Identity & structure

Verified identifiers, sequence, and analytical properties — every value machine-readable and independently sourceable against PubChem.

T
K
P
R
P
G
P

Primary sequence · 7 residues.

Selank — identity and specification
Identity
CAS129954-34-3
PubChem CID11765600
FDA UNIITS9JR8EP1G
Also known asSelank peptide, TP-7, TP 7, Selanc
Research classSignaling & Neuroactive
Structure
Molecular formulaC33H57N11O9
InChIKeyJTDTXGMXNXBGBZ-YVHUGQOKSA-N
SequenceTKPRPGP
Length7 residues
Analytical
Average molecular weight751.89 g/mol
Monoisotopic mass751.4341 Da
FormLyophilized powder
SolubilityWater-soluble
Storage2–8 °C, desiccated

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.

IdentityESI-MS · observed vs expected m/z
PurityRP-HPLC · peak area %
CompositionMolecular formula · residue count

Handling & stability

Physical form, storage, and solubility as supplied. Handling guidance only — no use protocols.

Physical formLyophilized powder
Storage2–8 °C, desiccated
SolubilityWater-soluble
Length7 residues

Related compounds

Other compounds in this research class.

Frequently asked questions

What is 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. It is studied in signaling and neuromodulation research and is supplied as a characterized reference material.
What is the molecular formula of Selank?
Selank has the molecular formula C33H57N11O9, giving a molecular weight of 751.89 g/mol. Its monoisotopic mass is 751.4341 Da.
What is the CAS number of Selank?
The CAS Registry Number for Selank is 129954-34-3. Its InChIKey is JTDTXGMXNXBGBZ-YVHUGQOKSA-N.
How is the identity of Selank confirmed?
Identity is confirmed by electrospray mass spectrometry. The observed mass-to-charge ratio is compared against the expected series — for Selank, [M+H]⁺ is expected at m/z 752.44. Purity is measured separately by reversed-phase HPLC as the target peak’s share of total peak area.
How should Selank be stored?
Selank is supplied as lyophilized powder and should be stored at 2–8 °C, desiccated. It is water-soluble.
Is Selank a peptide?
Yes. Selank is a peptide — a chain of amino-acid residues joined by peptide bonds, 7 residues in length. Its identity is defined by that sequence and its molecular mass.
Is Selank approved for human use?
No. Selank is supplied strictly for laboratory research use only. It is not a drug, is not approved by the FDA for any human or veterinary use, and must not be administered to humans or animals.

Data, tools & certificates

References

  1. PubChem — compound identity, structure & computed properties (CID 11765600). PubChem →
  2. CAS Registry Number 129954-34-3.
  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.

áFor Research Use Only · Not for human or veterinary use · Not for diagnostic or therapeutic use