Buyer checklist
Buying Selank peptide: powder specs, CAS number, and RUO labeling
Before you buy Selank peptide for laboratory work, check three things on the product page: the compound's identity data (CAS number, formula, sequence), the physical format of the powder you are paying for, and the research-use-only labeling. This checklist covers each one and shows what peptide.prof publishes for Selank today.
peptide.prof lists Selank as a 10 mg lyophilized research vial with 1, 3, 5, and 10 pack pricing.
1. Identity: CAS number, formula, and sequence
A serious listing should let you match the material to a public chemical record. For Selank, the reference record is PubChem CID 11765600:
| Field | Value (PubChem) |
|---|---|
| Name | Selank (also indexed as TP-7) |
| CAS number | 129954-34-3 |
| Sequence | Thr-Lys-Pro-Arg-Pro-Gly-Pro (seven amino acids) |
| Molecular formula | C33H57N11O9 |
| Molecular weight | 751.9 g/mol |
If a seller's page uses a different CAS number or sequence for "Selank," treat that as a red flag and ask why before you order.
2. Powder specs: what is actually in the vial
"Selank powder for sale" should mean a stated amount of lyophilized (freeze-dried) peptide in a sealed vial, not a vague "research blend." Here is what the peptide.prof Selank page states:
| Spec | peptide.prof Selank listing |
|---|---|
| Form | Lyophilized powder |
| Strength | 10 mg per vial |
| Appearance | White to off-white lyophilized solid |
| Packs | One vial per pack; 1, 3, 5, or 10 packs |
| Origin | Made in USA |
| Intended use | Laboratory research only. Not for human or veterinary use. |
At the time of writing, the buy box shows 1 pack at $60, 3 packs at $56 each, 5 packs at $53 each, and 10 packs at $50 each. The live buy box on the Selank product page is always the source of truth for price and stock.
Bacteriostatic water is not included with peptide vials. It is a separate catalog line (bacteriostatic water, 3 mL and 10 mL), sold by the pack and subject to its own stock status. This site does not publish reconstitution or mixing instructions.
3. Research-use-only labeling
Selank sold as a research chemical is a laboratory material purchase. The labeling should say so on the product page itself, not only in a footer:
- States research use only and not for human or veterinary use.
- Contains no dose, administration, or "protocol" copy.
- Makes no treatment or health claims.
peptide.prof repeats that framing in the site bar, the buy box, the specifications block, and the FAQ on every product page. The full policy is on the research use page.
4. Purity and lot documentation
Ask whether a lot-level certificate of analysis (COA) is available, and read what the store actually publishes. The peptide.prof homepage trust list says "Batch COA when listed," which is an on-page policy, not a promise that every product shows a PDF at all times. If a certificate is posted on the product page, match its lot details to the vial you order. If none is shown, do not assume a purity percentage the store has not published.
5. Selank vs Semax: regulatory context
Selank and Semax are often searched together, but they sit in different places in the 2026 news cycle. Semax is one of the six peptides named in the HHS interim 503A compounding enforcement-discretion policy (with BPC-157, Epitalon, KPV, MOTS-c, and TB-500). Selank is not on that list. Either way, compounding policy does not change how a research-use catalog sells laboratory material. For a full side-by-side buyer table, see Selank vs Semax. For the dated Semax notes and primary sources, see Semax after HHS enforcement discretion and LegitScript's Nov 2026 update.
Selank buyer checklist you can reuse
- Does the page give a CAS number (129954-34-3) or sequence that matches the public record?
- Is the vial strength stated in milligrams, with the form (lyophilized powder) named?
- Are pack prices written as numbers you can quote before checkout?
- Does it say research use only, with no dosing copy or health claims?
- Is there a clear statement about lot certificates, and is any certificate actually posted?
- Are payment methods and the ship-to country stated before checkout?
On peptide.prof, payment goes to the store by Venmo or crypto, and orders ship to a United States address after payment is confirmed.
Ready to order Selank for laboratory research? Pick a pack size on the product page and check out when you are ready. Research use only.
FAQ
- What is the CAS number for Selank?
- Selank is listed in PubChem (CID 11765600) with CAS number 129954-34-3, molecular formula C33H57N11O9, and a molecular weight of 751.9 g/mol. Its sequence is Thr-Lys-Pro-Arg-Pro-Gly-Pro.
- What Selank format does peptide.prof list?
- A 10 mg vial of lyophilized powder (white to off-white solid), one vial per pack, with 1, 3, 5, and 10 pack options on the product page. Made in USA. Research use only.
- Is Selank one of the six peptides in the HHS 503A policy?
- No. The HHS interim 503A enforcement-discretion appendix names BPC-157, Epitalon, KPV, MOTS-c, Semax, and TB-500. Selank is not on that list. peptide.prof sells Selank as laboratory research material only.
- Does peptide.prof give Selank dosing or mixing instructions?
- No. peptide.prof sells laboratory research material only. Not for human or veterinary use. The site does not publish dose, administration, or reconstitution instructions.
Research use only. Not for human or veterinary use. No dose or administration instructions on this site. Chemical identity data from PubChem (CID 11765600), checked November 4, 2026.