Search products
Search the catalog by name or ingredient
Search the catalog by name or ingredient
Research peptide · 5 mg / vial
4.6· 22 reviewsLyophilized KPV, ≥99% HPLC purity, supplied with a batch-specific Certificate of Analysis (HPLC + mass spec) · C16H30N4O4 · MW 342.44 g/mol · CAS 67727-97-3. Reference material for laboratory research use only — not for human or veterinary use.
Total for 3 items
$113.97
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-24208
Mfg Jul 23, 2026 · Exp Jul 22, 2028 · Aegis Bioanalytical Laboratories
Lot PBL-24207
Mfg Mar 26, 2026 · Exp Mar 25, 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.
KPV · 5 mg
$45.99
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 22 reviews
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.
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.
Purity and identity were on point. Only nitpick is the vial is a touch small for larger diluent volumes — minor.
Ordered the 5-vial bundle — per-vial pricing is fair and the volume discount applied exactly as shown. Smooth checkout.
No issues with the material itself. The label print was slightly faint on one vial but still fully legible.
Packaging was discreet and protective, labels crisp, and the lot resolved to a real report in the COA vault. Zero complaints.
Third order across two different lots and both COAs line up. Consistency matters more than a headline purity number, and they deliver it.
Third order across two different lots and both COAs line up. Consistency matters more than a headline purity number, and they deliver it.
Packaging was discreet and protective, labels crisp, and the lot resolved to a real report in the COA vault. Zero complaints.
Everything checked out against the COA. Shipping took a day longer than expected but arrived well packed.
Third order across two different lots and both COAs line up. Consistency matters more than a headline purity number, and they deliver it.
Ordered the 5-vial bundle — per-vial pricing is fair and the volume discount applied exactly as shown. Smooth checkout.
Ordered the 5-vial bundle — per-vial pricing is fair and the volume discount applied exactly as shown. Smooth checkout.
Third order across two different lots and both COAs line up. Consistency matters more than a headline purity number, and they deliver it.
Being able to look up the certificate by lot number before ordering is the whole reason we switched. Documentation is impeccable.
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.
Lyophilized cake dissolved fully in bacteriostatic water with no cloudiness or residue. Net peptide content on the COA let me hit exact working concentrations.
No issues with the material itself. The label print was slightly faint on one vial but still fully legible.
Third order across two different lots and both COAs line up. Consistency matters more than a headline purity number, and they deliver it.
No problem with the vial or its documentation, but the carrier held my package longer than the quoted window.
