Neuropeptides

CAS129954-34-3

FormulaC33H57N11O9

Mol. weight751.87 Da

Quantity10mg/vial

Purity99.0% HPLC

IdentityConfirmed

ReportBy email on request

StockIn stock

Selank 10mg

Name: Selank 10mg
Brand: Pepta Labs
SKU: selank
Price: 33.24 USD
Availability: InStock

TP-7, Thr-Lys-Pro-Arg-Pro-Gly-Pro, TKPRPGP, Selanc, UNII TS9JR8EP1G · CAS 129954-34-3

Selank 10mg is a single sealed glass vial holding a supplier-stated 10 mg of Selank (TP-7) as lyophilized powder, sold by Pepta Labs as a laboratory reference material. 10 mg is the only Selank size Pepta Labs lists; the acetylated, amidated analogue is a separate listing, N-Acetyl Selank Amidate 10mg. The analytical report for the sampled production run is sent by email on request, before you order if you want to see it first: request it on this page or email support@peptalabs.com.

Selank 10mg: $33.24 per vial ($3.32 per mg of the supplier-stated 10 mg). Ships to US addresses only. Selank 10mg (TP-7 Peptide) is a lyophilized research peptide supplied as 10mg of dry powder per sealed vial. CAS 129954-34-3; molecular formula C33H57N11O9; molecular weight 751.87 Da. Purity is reported as 99% by reversed-phase HPLC and identity is confirmed by mass spectrometry; the analytical report is available by email. Supplied for laboratory research use only.

99.0% pure Identity confirmed

$33.24

$3.32 per mg

Free US shipping · Most orders ship the next business day

Pack size and price

Quantity

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Code FALL25: 25% off at checkout.

Free US shipping, no minimum

Most orders ship the next business day as dry powder at ambient temperature. Unopened products in original sealed condition may be returned within 30 days of delivery with return authorization.

Report by email before you order

Independent HPLC purity and MS identity report on request. Pepta Labs does not test in-house.

Payment methods

Pepta Labs accepts Cash App, Venmo, Zelle, Bitcoin and Ethereum (5% crypto discount). Payment instructions are emailed as soon as you place your order.

Research use only

Not for human or animal use. Certified at checkout from a registered account.

Specifications

Selank 10mg at a glance

Selank 10mg is supplied as lyophilized powder in a sealed glass vial for laboratory research only. It is not for human or animal use, consumption, administration, diagnosis or treatment.

Full name: TP-7 Peptide
Quantity: 10mg/vial
CAS number: 129954-34-3
Molecular formula: C33H57N11O9
Molecular weight: 751.87 Da
Sequence: H-Thr-Lys-Pro-Arg-Pro-Gly-Pro-OH (TKPRPGP; all L-amino acids)
Purity: 99.0% by HPLC
Identity: Confirmed by mass spectrometry
Physical form: Lyophilized (freeze-dried) powder, sealed glass vial
Report: Sent by email on request, before you order if you want to see it first.
Not claimed: Sterility, endotoxin or LAL, potency, pharmaceutical-grade, cGMP, contaminant-panel or vial fill-quantity testing
Category: Neuropeptides

Chemical identity

What Selank is

Selank, also catalogued under the research code TP-7, is a synthetic linear heptapeptide with the sequence Thr-Lys-Pro-Arg-Pro-Gly-Pro (TKPRPGP). Structurally it is the tetrapeptide tuftsin (Thr-Lys-Pro-Arg) extended at the C-terminus by the tripeptide Pro-Gly-Pro. All seven residues are L-amino acids; the N-terminal amine and the C-terminal carboxylic acid are unmodified. The molecular formula is C33H57N11O9 with a molecular weight of 751.9 g/mol (monoisotopic mass 751.43). It is registered under CAS 129954-34-3, PubChem CID 11765600 and UNII TS9JR8EP1G, and is typically supplied as a trifluoroacetate or acetate salt. Pepta Labs lists Selank as a lyophilized powder in a sealed glass vial (10 mg per vial) with reported RP-HPLC purity of 99.0% and identity confirmed by mass spectrometry. Recommended storage is 2-8 C short term and -20 C long term, protected from light and moisture. It is sold strictly as a chemical reference material for laboratory research use only.

Also known as: TP-7, Thr-Lys-Pro-Arg-Pro-Gly-Pro, TKPRPGP, Selanc, UNII TS9JR8EP1G
Structural class: synthetic linear heptapeptide (tuftsin tetrapeptide Thr-Lys-Pro-Arg extended C-terminally with Pro-Gly-Pro)
Residues: 7 amino acids
Salt form: typically supplied as trifluoroacetate or acetate salt (a diacetate form is also catalogued)
PubChem CID: 11765600
UNII: TS9JR8EP1G

Handling

Storage, form and restrictions

Shipping: Ships at ambient temperature with no cold pack and no insulated packaging. No cold chain is required for dry powder.
Storage: Refrigerate at 2–8°C on arrival, or hold at −20°C for long-term storage. Keep sealed vials away from light and moisture.
Research use only: Offered solely for laboratory research. Not for human or animal use, consumption, administration, diagnosis or treatment. See the research use policy.

Documentation

Before you order

What are research peptides? Semax, Selank and Their N-Acetyl Amidates: Sequences, Mass Differences, CAS and Salt Form Science.bio Closed (January 2026): Closure Date, Official Notice, Current Status and Sources All Neuropeptides compounds How to Read a Peptide COA HPLC and Mass Spectrometry Testing and Documentation Research Use Policy

Questions

Selank 10mg — common questions

What Selank sizes are for sale at Pepta Labs?

One: Selank 10mg, a single 10 mg vial of lyophilized powder. Larger quantities are ordered as multi-vial packs of the same 10 mg vial where the pack selector offers them. No solution form of Selank is listed. N-Acetyl Selank Amidate 10mg is a different compound with its own listing, not another size of Selank.

What is in the Selank 10mg vial as supplied?

Freeze-dried Selank powder in a sealed glass vial, at the supplier-stated quantity of 10 mg. The label identifies the compound, the quantity and the research-use designation; vials carry no lot or batch number. Vial fill quantity is not tested, and net peptide content is not reported per listing.

Which salt form is Selank 10mg supplied as?

The listing does not name a counter-ion; Selank is catalogued as a trifluoroacetate or acetate salt, and a diacetate form is also catalogued. The counter-ion adds mass to the powder without changing the peptide sequence. The analytical report covers RP-HPLC purity and mass-spectrometry identity for the sampled production run; it does not assay the counter-ion.

Is Selank 10mg lab tested, and is there a COA?

Yes. An independent lab report gives RP-HPLC purity as area-% and identity by mass spectrometry for the sampled production run Pepta Labs sourced. It is not a lot-specific certificate for an individual vial. Request it on this page or email support@peptalabs.com with the compound name, before you order if you want it first. The Learn guide How to Read and Verify a Peptide Certificate of Analysis (COA) walks through each field.

What mass should the Selank report show?

For C33H57N11O9 the monoisotopic mass is 751.43 Da, so the protonated ion [M+H]+ appears near m/z 752.4 and the doubly charged ion [M+2H]2+ near m/z 376.7. These values are calculated from the formula; the report lists the ions the laboratory observed for the sampled production run.

How should a sealed Selank 10mg vial be stored?

Keep the unopened vial of dry powder at 2-8 C for short-term storage or at -20 C for long-term storage, away from light and moisture. It ships at ambient temperature because dry lyophilized powder needs no cold pack. The Learn guide Storage Temperature and Handling of Lyophilized Research Peptides (Dry Powder) covers dry-powder storage in more detail.

What does Selank 10mg cost?

Selank 10mg starts at $33.24 per vial. 3-vial packs are 7% off and 5-vial packs are 14% off. US shipping is free with no minimum.

What payment methods are accepted?

Pepta Labs accepts Cash App, Venmo, Zelle, Bitcoin and Ethereum (5% crypto discount). Payment instructions are emailed as soon as you place your order.

Is this for human or animal use?

No. Selank 10mg is offered solely for laboratory research and is not for human or animal use, consumption, administration, diagnosis or treatment. Buyers certify this at checkout.

What is the difference between Selank and N-Acetyl Selank Amidate?

Both contain the same sequence Thr-Lys-Pro-Arg-Pro-Gly-Pro. N-Acetyl Selank Amidate has an acetyl group on the N-terminal amine and a C-terminal primary amide instead of a carboxylic acid, changing the formula from C33H57N11O9 to C35H60N12O9 and the molecular weight from 751.9 to about 792.9 g/mol, a shift of roughly 41 Da.

Is Selank the same as tuftsin?

No. Tuftsin is the tetrapeptide Thr-Lys-Pro-Arg (C21H40N8O6, about 500.6 g/mol). Selank is a heptapeptide that adds Pro-Gly-Pro to the C-terminus of that sequence, giving C33H57N11O9 and 751.9 g/mol with its own CAS number, 129954-34-3.

What does the CAS number 129954-34-3 identify?

It is the Chemical Abstracts Service registry number for the free heptapeptide Thr-Lys-Pro-Arg-Pro-Gly-Pro. It identifies the peptide structure, not the counter-ion, the quantity per vial or the purity grade.

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