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Research peptide · 5 mg / vial
4.8· 26 reviewsLyophilized LL-37, ≥99% HPLC purity, supplied with a batch-specific Certificate of Analysis (HPLC + mass spec) · C205H340N60O53 · MW 4493.3 g/mol · CAS 154947-66-7. Reference material for laboratory research use only — not for human or veterinary use.
Total for 3 items
$145.97
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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-24254
Mfg Jul 24, 2026 · Exp Jul 23, 2028 · Aegis Bioanalytical Laboratories
Lot PBL-24253
Mfg Apr 15, 2026 · Exp Apr 14, 2028 · Aegis Bioanalytical Laboratories
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30-Day Reship Guarantee. If a vial arrives damaged or a lot doesn’t match its COA, we reship or refund — no questions asked.
LL-37
$77.99
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)4.8
Based on 26 reviews
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.
Third order across two different lots and both COAs line up. Consistency matters more than a headline purity number, and they deliver it.
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.
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.
Ordered the 5-vial bundle — per-vial pricing is fair and the volume discount applied exactly as shown. Smooth checkout.
Dispatched same day, arrived sealed with legible lot numbers. The batch report was already in the vault before the package landed.
Ordered the 5-vial bundle — per-vial pricing is fair and the volume discount applied exactly as shown. Smooth checkout.
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.
Dispatched same day, arrived sealed with legible lot numbers. The batch report was already in the vault before the package landed.
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.
No issues with the material itself. The label print was slightly faint on one vial but still fully legible.
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.
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.
Packaging was discreet and protective, labels crisp, and the lot resolved to a real report in the COA vault. Zero complaints.
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.
