Search products
Search the catalog by name or ingredient
Search the catalog by name or ingredient
Research peptide · 5 mg / vial
4.6· 28 reviewsLyophilized Selank, ≥99% HPLC purity, supplied with a batch-specific Certificate of Analysis (HPLC + mass spec) · C33H57N11O9 · MW 751.91 g/mol · CAS 129954-34-3. Reference material for laboratory research use only — not for human or veterinary use.
Total for 3 items
$93.97
Add 7 more to unlock 20% off
Good to know
No slogans, no “trust us.” Here is the exact path every PepBiotics vial takes before its lot number ever reaches your label.
Solid-phase synthesis, then lyophilized to a stable powder. Each production run becomes a single traceable lot.
Reverse-phase HPLC quantifies purity and resolves impurities — the headline percentage on every certificate.
ESI mass spectrometry confirms the molecular weight matches the target sequence. No guessing what's in the vial.
Data sheet
Lab results
Every lot links to its full Certificate of Analysis from Aegis Bioanalytical Laboratories, an independent ISO/IEC 17025-accredited lab — each with a Report ID you can verify.
Lot PBL-24114
Mfg Jul 16, 2026 · Exp Jul 15, 2028 · Aegis Bioanalytical Laboratories
Lot PBL-24113
Mfg Apr 16, 2026 · Exp Apr 15, 2028 · Aegis Bioanalytical Laboratories
Questions
Reviews
Keep exploring
30-Day Reship Guarantee. If a vial arrives damaged or a lot doesn’t match its COA, we reship or refund — no questions asked.
Selank · 5 mg
$25.99
Don’t forget
Bac.water — $18.99
A standard laboratory diluent for lyophilized research materials. Most orders add one.
Every result is signed by Aegis Bioanalytical Laboratories and published to the vault — searchable by the lot number on your label.
CAS number, sequence, molecular weight, HPLC purity, storage and reconstitution — every value on this page, in one branded PDF for your lab records.
Download spec sheet (PDF)4.6
Based on 28 reviews
Reconstituted cleanly for our intranasal animal-model prep. Purity ≥99% confirmed. COA identity by mass matched. No notes.
Quick turnaround and a proper COA. The kind of supplier that makes procurement easy. Reordering.
Ran our own analytical HPLC on the lot and it agreed with the published COA within tolerance. Identity confirmed by MS. This is what a research supplier should be.
Dispatched same day, arrived sealed with legible lot numbers. The batch report was already in the vault before the package landed.
Ran our own analytical HPLC on the lot and it agreed with the published COA within tolerance. Identity confirmed by MS. This is what a research supplier should be.
Being able to look up the certificate by lot number before ordering is the whole reason we switched. Documentation is impeccable.
Ordered the 5-vial bundle — per-vial pricing is fair and the volume discount applied exactly as shown. Smooth checkout.
Being able to look up the certificate by lot number before ordering is the whole reason we switched. Documentation is impeccable.
Ordered the 5-vial bundle — per-vial pricing is fair and the volume discount applied exactly as shown. Smooth checkout.
COA matched and reconstitution was clean; transit was slower than the estimate this time around.
Packaging was discreet and protective, labels crisp, and the lot resolved to a real report in the COA vault. Zero complaints.
Dispatched same day, arrived sealed with legible lot numbers. The batch report was already in the vault before the package landed.
Being able to look up the certificate by lot number before ordering is the whole reason we switched. Documentation is impeccable.
Lyophilized cake dissolved fully in bacteriostatic water with no cloudiness or residue. Net peptide content on the COA let me hit exact working concentrations.
Dispatched same day, arrived sealed with legible lot numbers. The batch report was already in the vault before the package landed.
No problem with the vial or its documentation, but the carrier held my package longer than the quoted window.
Being able to look up the certificate by lot number before ordering is the whole reason we switched. Documentation is impeccable.
Lyophilized cake dissolved fully in bacteriostatic water with no cloudiness or residue. Net peptide content on the COA let me hit exact working concentrations.
Dispatched same day, arrived sealed with legible lot numbers. The batch report was already in the vault before the package landed.
Packaging was discreet and protective, labels crisp, and the lot resolved to a real report in the COA vault. Zero complaints.
No issues with the material itself. The label print was slightly faint on one vial but still fully legible.
Everything checked out against the COA. Shipping took a day longer than expected but arrived well packed.
Purity and identity were on point. Only nitpick is the vial is a touch small for larger diluent volumes — minor.
Lyophilized cake dissolved fully in bacteriostatic water with no cloudiness or residue. Net peptide content on the COA let me hit exact working concentrations.
