Selank Peptide for Sale | Compare Brands and Lab Reports

How to choose

Which Selank is right for your research?

Every brand is compared on the same points, using the information each brand publishes. Pick the one that fits how you work.

Compare on Information each brand publishes

Viora Our pick: recommended

Divine Steel Peptides

Trynity Peptides Lowest entry price

Who it's for

Best for

Researchers who want a lab report for every lot

Larger vial sizes, including Tesamorelin 20 mg

A low cost first order

Lab testing

Third-party lab report

Published, tested by Freedom Labs

Coming soon

Purity on latest lot

99.66%

Coming soon

Other tests on the report

Content, Identity

Coming soon

Price

Vial sizes

10 mg

Price per vial

$66

$70

$50

Lowest price per mg

$5.61 (10 mg, 5 vials)

$5.95 (10 mg, 5 vials)

$4.25 (10 mg, 5 vials)

Shipping and returns

Dispatch

Not published yet

Shipping cost

$7.95 for Standard, free over $150

Returns

30 days on unopened vials

Damage claims within 48 hours

Prices from each brand, 24 Oct 2026

Choose Viora, $66

Choose Divine Steel, $70

Choose Trynity, $50

Viora Our pick

Best for: Researchers who want a lab report for every lot
Third-party lab report: Published, tested by Freedom Labs
Purity on latest lot: 99.66%
Other tests on the report: Content, Identity
Vial sizes: 10 mg
Price per vial: $66
Lowest price per mg: $5.61 (10 mg, 5 vials)
Dispatch: Not published yet
Shipping cost: $7.95 for Standard, free over $150
Returns: 30 days on unopened vials

Choose Viora

Divine Steel Peptides

Best for: Larger vial sizes, including Tesamorelin 20 mg
Third-party lab report: Published, tested by Freedom Labs
Purity on latest lot: 99.66%
Other tests on the report: Content, Identity
Vial sizes: 10 mg
Price per vial: $70
Lowest price per mg: $5.95 (10 mg, 5 vials)
Dispatch: Not published yet
Shipping cost: $7.95 for Standard, free over $150
Returns: 30 days on unopened vials

Choose Divine Steel Peptides

Trynity Peptides Lowest entry price

Best for: A low cost first order
Third-party lab report: Coming soon
Purity on latest lot: Coming soon
Other tests on the report: Coming soon
Vial sizes: 10 mg
Price per vial: $50
Lowest price per mg: $4.25 (10 mg, 5 vials)
Dispatch: Not published yet
Shipping cost: $7.95 for Standard, free over $150
Returns: Damage claims within 48 hours

Choose Trynity Peptides

Our recommendation

Viora

Viora is made and shipped in the USA, with a published lab report for the lot on your vial. Trynity costs less per order. Bought in 5 vial bundles, Trynity works out cheaper per mg ($4.25 vs $5.61).

Source: each brand's website, checked 24 Oct 2026. “Not published yet” means the brand has not made that information public.

Lab report

Selank test results, matched to the lot

Viora, lot VIO-SELNK-260721. Tested by Freedom Labs, an independent laboratory, in 1 report dated 27 Jul 2026.

Purity

Pass

99.66%

HPLC-UV

View report

Content

Reported

9.18 mg

Net content

View report

Identity

Pass

Selank confirmed

LC-MS

View report

View full lab report

Divine Steel Peptides: lot DSP-SELNK-260721, 99.66% purity, Freedom Labs. View report

Trynity Peptides lab report for Selank: coming soon. It will appear here when it is uploaded.

Selank research guide · Updated 24 Oct 2026

What is Selank?

Selank is a synthetic peptide of 7 amino acids. It is an analog of tuftsin (Thr-Lys-Pro-Arg), a natural immune peptide, extended with Pro-Gly-Pro to make it more stable. It was developed at the Institute of Molecular Genetics of the Russian Academy of Sciences and is studied in neuroscience research. It is supplied as a lyophilized powder for in vitro and preclinical laboratory research only.

Full specifications

Sequence: Thr-Lys-Pro-Arg-Pro-Gly-Pro
Length: 7 amino acids (heptapeptide)
CAS number: 129954-34-3
Molecular formula: C33H57N11O9
Molecular weight: 751.9 g/mol
Form: Lyophilized powder in a glass vial
Purity standard: 98% or higher (brand listing)
Storage: Minus 20 °C long term. 2 to 8 °C once reconstituted, use within 30 days.

How Selank is tested

A good Selank listing comes with a lab report for the exact lot in the vial. These are the results to look for:

Purity (HPLC)
How much of the sample is the compound
Identity (MS or LCMS)
Confirms it is the right molecule
Net content
The real mg in the vial versus the label
Endotoxin (LAL)
Bacterial residue, reported in EU
Sterility
Confirms nothing is growing in the vial
Heavy metals (ICP-MS)
Arsenic, cadmium, lead and mercury

Storage and handling

Lyophilized Selank is stable at room temperature while it ships. For long term storage keep vials at minus 20 °C. Once reconstituted for laboratory use, store at 2 to 8 °C and use within 30 days.

Selank vs Semax

Selank and Semax were both developed at the same Russian institute and both end in Pro-Gly-Pro. Selank is based on tuftsin. Semax is based on a fragment of ACTH. They are also sold together as a nasal spray.

Compound Semax Lab reports and price per mg by brand Read more → Blend Selank + Semax Nasal Spray Lab reports and price per mg by brand Read more →

Where to buy Selank

Online Peptide Market shows every brand that sells Selank on one page, so you can compare lab reports, price per mg and shipping before you buy. Trynity Peptides offers a 10 mg vial. Viora offers a 10 mg vial with a published Freedom Labs report. Divine Steel Peptides offers a 10 mg vial with a published Freedom Labs report. Buy 3 vials to save 10%, or 5 vials to save 15%.

Questions and answers

Selank questions, answered

Where can I buy Selank?

Right here. Online Peptide Market lists every brand's Selank on one page: Trynity Peptides (10 mg for $50), Viora (10 mg for $66) and Divine Steel Peptides (10 mg for $70). Compare lab reports, price per mg and shipping, then check out in one cart.

Is the Selank third-party tested?

Viora's Selank, lot VIO-SELNK-260721, was tested by Freedom Labs: 99.66% purity by HPLC-UV, identity confirmed by LC-MS and net content of 9.18 mg. Divine Steel Peptides' Selank, lot DSP-SELNK-260721, was tested by Freedom Labs: 99.66% purity by HPLC-UV, identity confirmed by LC-MS and net content of 9.18 mg. Trynity Peptides' report is coming soon.

What is the difference between Selank and Semax?

Selank (Thr-Lys-Pro-Arg-Pro-Gly-Pro) is an analog of tuftsin, an immune peptide. Semax (Met-Glu-His-Phe-Pro-Gly-Pro) is an analog of a fragment of ACTH. Both are 7 amino acid peptides sold here.

Do you offer bulk discounts on Selank?

Yes. Buy 3 vials and save 10%, or 5 vials and save 15%. A 5 vial bundle of Trynity Peptides 10 mg works out to $4.25 per mg, the lowest price per mg on the page.

How should Selank be stored?

Keep lyophilized vials at minus 20 °C for long term storage. They are stable at room temperature while shipping. Once reconstituted for lab use, store at 2 to 8 °C and use within 30 days.

What does research use only mean?

Products are sold only for in vitro laboratory research. They are not drugs, supplements or cosmetics, are not FDA approved, and are not for human or veterinary use. Buyers must be 21 or older.

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