Cognitive & Sleep Research

Selank

Tuftsin analogue heptapeptide

Also known as Thr-Lys-Pro-Arg-Pro-Gly-Pro, TP-7.

A synthetic analogue of the immunomodulatory tetrapeptide tuftsin with a Pro-Gly-Pro extension, studied in anxiety-model and GABAergic-signalling research.

Current lot: SN-SLK-2607
Purity: 99.49% by HPLC
Tested: Jul 23, 2026
Stocked in: United States, Canada, Australia

Synamino Sciences research vial with a silver cap on a slate-blue background

Ships from

Vial size

$36.00

USD · 10 mg · In stock

Qty

Order by 2:00 PM PT for same-day dispatch from Reno, Nevada. 1–3 business days by USPS Priority and UPS. Free shipping over $150.00.

For laboratory research use only. Not for human or veterinary use.

About the compound

Selank extends the tuftsin sequence Thr-Lys-Pro-Arg with Pro-Gly-Pro, the same stabilising motif used in Semax. It is investigated in behavioural models of anxiety and in studies of neurotransmitter balance.

Supplied as a lyophilized powder.

Studied inAnxiety models · GABAergic signalling · Immune–neural interactions

Certificate of analysis

The certificate for the lot currently shipping. Every vial in that lot carries the same lot number on its label.

Certificate of analysis

Selank · 10 mg

Lot SN-SLK-2607 · tested Jul 23, 2026

99.49%

Purity by HPLC

Labeled: 10 mg
Measured: 10.3 mg
Panel: 6 passed · 2 reported
Laboratory: Independent ISO/IEC 17025 accredited laboratory

Assay	Method	Result	Outcome
Appearance	Visual	White lyophilized powder	Pass
Purity	HPLC · spec ≥ 98%	99.49%	Pass
Net peptide content	HPLC	10.3 mg	Reported
Identity	LC-MS	Confirmed	Pass
Heavy metals	ICP-MS	Not detected	Pass
Sterility	USP <71>	No growth	Pass
Endotoxin	LAL · USP <85>	< 0.05 EU/mL	Reported
Residual solvents	GC-HS	Within limits	Pass

Specification and storage

CAS number: 129954-34-3
Molecular formula: C33H57N11O9
Molecular weight: 751.9 g/mol
Residues: 7
Sequence: TKPRPGP
Reference record: PubChem entry

Storage

Sealed lyophilized vials are stable at room temperature for short periods; store at 2–8 °C for routine use.
For long-term storage keep sealed vials at −20 °C, protected from light and moisture.
Reconstituted solutions should be refrigerated at 2–8 °C and used within the period defined by your laboratory's protocol.

Literature

Peer-reviewed publications on this compound. Provided for reference; they are not claims about this product.

01
Protein and Peptide Letters · 2018
Peptide-based Anxiolytics: The Molecular Aspects of Heptapeptide Selank Biological Activity
Vyunova TV, Andreeva L, Shevchenko K, et al.
02
Bulletin of Experimental Biology and Medicine · 2022
Selank, a Peptide Analog of Tuftsin, Attenuates Aversive Signs of Morphine Withdrawal in Rats
Konstantinopolsky MA, Chernyakova IV, Kolik LG

Studied alongside

Semax
ACTH(4–7) heptapeptide analogue
from $36.00
DSIP
Delta sleep-inducing peptide
from $32.00

Research notice

Selank is supplied for in vitro laboratory research and analytical use by qualified professionals. It is not a medicine, supplement or cosmetic, has not been evaluated by any regulator, and is not for human or veterinary use. Published findings cited on this page are provided for reference and are not claims about this product.