Selank 5 mg — a tuftsin-derived heptapeptide analog — from Peptide Tech is a premium, lyophilized research-use-only (RUO) reagent supplied at ≥99% purity (HPLC & MS verified). The peptide sequence Thr-Lys-Pro-Arg-Pro-Gly-Pro (TKPRPGP) is packaged for rigorous in-vitro neurobiology, immunology, and analytical method-development work where sequence fidelity, batch traceability, and cold-chain integrity matter.

Specifications

Property	Details
Product Type	Synthetic tuftsin-analog heptapeptide
Synonyms	Selank; Tuftsin analog peptide
Sequence (1-letter)	TKPRPGP
Sequence (3-letter)	Thr-Lys-Pro-Arg-Pro-Gly-Pro
Salt / Counter-ion	Typically acetate; see lot-matched COA
CAS / Registry	May vary by salt form; see COA for identifiers
Molecular Formula / MW	Sequence-dependent; reported on COA
Physical Appearance	White to off-white lyophilized powder
Container	3 mL glass vial (5 mg net content)
Purity	≥99% verified by HPLC & MS (batch COA via on-vial QR)
Solubility	Readily soluble in sterile water or neutral aqueous buffers; basic residues (Lys/Arg) enhance aqueous solubility. If required by SOP, 0.22 µm filter after reconstitution.
Intended Use	Laboratory research only (RUO). Not for human or animal use.

Molecular Structure

Linear heptapeptide derived from the tuftsin motif (TKPR) with a C-terminal extension (TKPRPGP). For a lot-specific structural rendering and exact identifiers, scan the on-vial QR to access the COA.

Key Features of Peptide Tech

Same-Day Shipping (Mon–Fri, on in-stock items)
GMP-Aligned Lyophilized Peptides
USA Made
24/7 Support
Price Match Guarantee
Batch Tracking with QR Code Verification
3rd-Party U.S. Lab Testing — purity, quantity, endotoxin
Cold-Chain Shipping — Always (no paid upgrade)
Worldwide Shipping
All Major Payments Accepted
Text & Email Order Updates
2-Day FedEx/UPS Shipping Standard
Cheapest Overnight Rates
Largest Variety of Peptides & Bioregulators

Potential Applications in Research

Strictly in-vitro, cell-based, or biochemical experiments. No health, diagnostic, or therapeutic claims.

Neuropeptide pathway profiling in neuronal or neuroendocrine cell lines using reporter assays (e.g., CRE/NF-κB/ERK) under defined stimulation paradigms.
Gene-expression panels (qPCR/RNA-seq) for peptide-dependent transcriptional responses in stress- or cytokine-challenged cultures.
Immune-cell phenotyping in PBMC-derived models (surface markers and secreted cytokines by flow/ELISA) under controlled conditions.
Peptidase stability & uptake studies in serum or cell-conditioned media with RP-HPLC/LC–MS quantitation.
Analytical method development (HPLC/LC–MS/MS) for identity, purity, recovery, and matrix effects across buffers and temperatures.

Quality, Storage & Handling

Every lot is confirmed by HPLC (purity) and MS (identity); batch COA is accessible via the on-vial QR. Independent U.S. labs verify purity, quantity, and endotoxin.

Storage (lyophilized): −20 °C long-term or 2–8 °C short-term; keep desiccated and protected from light.
After reconstitution: Aliquot and store at ≤−20 °C (or −80 °C per SOP); avoid repeated freeze–thaw.
Reconstitution tips: Use sterile water or suitable buffer; gently swirl/invert to dissolve; 0.22 µm filter only if required by your assay.

Shipping & Fulfillment

Ships with validated cold-chain packaging. In-stock orders placed before the daily cutoff ship the same day. 2-Day FedEx/UPS is standard; overnight options available. Automated text/email updates included; international shipping available where permitted.

Compliance & RUO Disclaimer

For laboratory research only. Not a drug, cosmetic, food, or household chemical. Not for human or animal use, ingestion, diagnostic, or therapeutic applications. Buyers warrant they are qualified to handle RUO materials under applicable laws and institutional guidelines.

FAQs

Is this for human or veterinary use?: No. This product is sold strictly as RUO and must not be used in humans or animals.
What purity do you provide?: Each 5 mg vial is ≥99% by HPLC with MS identity confirmation; third-party testing is performed on every lot (see COA via QR).
What’s the exact salt form?: Most lots are provided as the acetate salt. Refer to the lot-matched COA/label for the confirmed counter-ion and identifiers.
How should I reconstitute it?: Use sterile water or a compatible buffer; gently invert until dissolved. If your protocol requires sterility, pass through a 0.22 µm filter and aliquot to avoid repeat freeze–thaw.
Which in-vitro assays is Selank commonly used in?: Typical RUO applications include neuropeptide pathway reporters, immune-cell cytokine panels, peptidase-stability/uptake studies, and LC–MS/HPLC method development.