Peptide fragments & analogues
Selank
Tuftsin analogue
- Third-party lab tested
- 99%+ purity on tested lots
- Certificate per size
A synthetic heptapeptide analogue of tuftsin. Supplied as a lyophilized powder for laboratory research use.
Analytical specification (10 mg)
Horizon Analytical · 2026-08-30
- Purity
- 99.51%
- Net content
- 9.8 mg (labeled 10 mg)
- Method
- UPLC / MS
- Endotoxin
- <0.05 EU/mL
- CAS
- 129954-34-3
- Formula
- C33H57N11O9
- Mol. weight
- ~751.9 g/mol
- PubChem CID
- 11765600
- Lot
- DPS-8800891
Store lyophilized at -20°C, protected from light.
1 × 10 mg: $61.00
- Lab certificates posted per lot
- Ships via USPS with tracking
- Replies within one business day
Specification guarantee. If what you receive does not match the specification on this page, we replace it or refund it. Terms
Research use only
This product is supplied strictly for laboratory research use. It is not a drug, food, cosmetic, or dietary supplement, and is not for human or veterinary consumption. Beyond Peptides provides no dosing guidance, protocols, or medical advice.
Adding to cart does not charge you. After you submit your order, you pay by Venmo, Zelle or Cash App from the confirmation page, then it ships via USPS.
About Selank
Selank is a synthetic heptapeptide with the sequence Thr-Lys-Pro-Arg-Pro-Gly-Pro. It extends tuftsin, the tetrapeptide Thr-Lys-Pro-Arg, with a Pro-Gly-Pro tripeptide at the C-terminus that makes it more resistant to peptidase cleavage. The listed CAS number is 129954-34-3, with formula C33H57N11O9 (approximately 751.9 g/mol).
It is supplied as a lyophilized powder in 10 mg vials. Store it lyophilized at -20°C, protected from light. A certificate of analysis is posted for each size as its lot is tested, and the size table on this page shows which sizes have one. It is sold for laboratory research use only and is not for human or veterinary use.
Selank sizes and specifications
Selank is supplied as 10 mg for laboratory research use only.
| Size | Price | Availability | Purity and method | Lot | Certificate |
|---|---|---|---|---|---|
| 10 mg9.8 mg (labeled 10 mg) | $61.00 | In stock | 99.51%UPLC / MS | DPS-8800891 | View certificateHorizon Analytical, 2026-08-30 |
Identification and handling
- CAS number
- 129954-34-3
- Molecular formula
- C33H57N11O9
- Molecular weight
- ~751.9 g/mol
- PubChem CID
- 11765600
- Storage
- Store lyophilized at -20°C, protected from light.
Ordering and documentation
- You pay by Venmo, Zelle or Cash App after submitting your order, and it ships via USPS. Shipping and payment
- How purity is measured and what a certificate of analysis shows: Testing and COAs
- Approved wholesale accounts get wholesale pricing on 10 or more bottles of one size. Wholesale
- Common questions about ordering, payment and shipping: FAQ
Selank questions
What is Selank?
Selank (Tuftsin analogue) is listed under peptide fragments & analogues and supplied as 10 mg for laboratory research use only. A synthetic heptapeptide analogue of tuftsin. Supplied as a lyophilized powder for laboratory research use. It is not for human or veterinary consumption.
Is there a certificate of analysis for Selank?
Yes, for 10 mg (99.51%, Horizon Analytical). Each certificate is linked on this page for its own size and lot.
What form is Selank supplied in?
Selank is supplied as a lyophilized (freeze-dried) powder in a sealed vial. Each size states its measured net content where its lot has been tested.
How should Selank be stored?
Store lyophilized at -20°C, protected from light.
How does ordering and shipping work?
Add Selank to your cart and submit your order; nothing is charged online. Your confirmation page shows your total, which you pay by Venmo, Zelle or Cash App. Once payment is matched to your order it ships via USPS with tracking, to addresses in the United States only.
Who can buy Selank?
Adults 21 or older buying for lawful laboratory research. Every order carries the research-use, age and terms acknowledgments at checkout, and ships only to addresses in the United States.
Can I return Selank?
Because these are research materials, we cannot accept returns once an order has shipped. If a product does not match the specification stated on its product page, contact us immediately and we will replace it or refund it.
