Selank is the seven-residue peptide TKPRPGP. Its sequence consists of the four-residue tuftsin sequence TKPR followed by Pro–Gly–Pro. The peptide chain and a stated salt form are separate parts of its chemical description.
Selank identity at a glance
PubChem identifies Selank as Thr–Lys–Pro–Arg–Pro–Gly–Pro. The supplied report prints the same TKPRPGP sequence. The database formula below is the peptide structure without added acetate components.PubChem — Selank, CID 11765600 (opens in a new tab)Supplied Selank 10 mg report — lot SEL-39-QBY (opens in a new tab)
| Field | Reference value |
|---|---|
| Name | Selank |
| Sequence | Thr–Lys–Pro–Arg–Pro–Gly–Pro (TKPRPGP) |
| CAS number | 129954-34-3 |
| Molecular formula | C33H57N11O9 |
| Molecular weight | 751.9 g/mol, PubChem reference structure |
Tuftsin, the PGP extension and salt form
| Material | Shared segment | Additional segment |
|---|---|---|
| Tuftsin | TKPR | None |
| Selank | TKPR | PGP |
This alignment separates the four-residue starting sequence from the seven-residue peptide. Keep the exact chain in an analytical specification; a reference labelled tuftsin specifies a different sequence from Selank.Semenova et al. (2009) (opens in a new tab)PubChem — Selank, CID 11765600 (opens in a new tab)
Volkova and colleagues describe their Selank material as a diacetate salt. That is a description of the material in that source. The supplied Novum report identifies TKPRPGP and a freeze-dried form but does not print a complete salt composition.Volkova et al. (2016) (opens in a new tab)Supplied Selank 10 mg report — lot SEL-39-QBY (opens in a new tab)
Check the name, sequence and analytical target
For the supplied report, retain the Selank name, TKPRPGP sequence, lot SEL-39-QBY and LC-HRMS identity wording together. Read the chromatographic percentage, measured peptide content, water and residual TFA as their own fields. The report assesses these separately.Supplied Selank 10 mg report — lot SEL-39-QBY (opens in a new tab)
Product and certificate documents
Sources and further detail
- PubChem — Selank, CID 11765600 (opens in a new tab)
Existing dossier record rechecked for sequence, CAS, formula and molecular weight.
- Volkova et al. (2016) (opens in a new tab)
Material description and TKPR–PGP identity only.
- Semenova et al. (2009) (opens in a new tab)
Existing comparison dossier: TKPR and TKPRPGP sequence alignment only.
- Supplied Selank 10 mg report — lot SEL-39-QBY (opens in a new tab)
Supplied report: identity wording and analytical fields. Results concern the named sample and lot; this is document transcription, not independent authentication.
Identity sources and supplied documents checked for this revision on 3 October 2026. Report transcription is separate from independent authentication. This article has not undergone independent scientific peer review.