LL-37 5 mg
LL-37 cathelicidin reference peptide, 5 mg lyophilized, HPLC-verified at 98.6% purity.
- Purity (HPLC)
- 98.6%
- Fill weight
- 5 mg / vial
- CAS number
- Stated on batch CoA
- Form
- Lyophilized powder
- Assay
- RP-HPLC + mass spectrometry
- Storage
- −20 °C, protected from light
About LL-37 as a reference compound
LL-37 is the only human cathelicidin-derived antimicrobial peptide and is a standard reference sequence in innate-immunity assays. Every PureLabs lot of LL-37 is produced under GMP-aligned synthesis controls, assayed by an independent partner laboratory using reverse-phase HPLC with mass-spectrometric confirmation, and released only above the stated purity threshold of 98.6%. The certificate of analysis is lot-specific, carries the chromatogram and MS trace for the exact vial you receive, and stays archived under reference SEQ-1082 for as long as the batch exists.
Handling and storage
- Store sealed LL-37 vials at −20 °C, protected from light.
- Reconstitute with bacteriostatic or sterile water added slowly down the vial wall; swirl, never shake.
- Hold reconstituted solution at 2–8 °C and use within roughly 21 days.
- Aliquot before freezing to avoid repeated freeze–thaw cycles.
LL-37 — frequently asked questions
Common laboratory questions about sourcing, purity, storage and shipping of LL-37.
What purity is PureLabs LL-37?
Current stock assays at 98.6% by reverse-phase HPLC, confirmed by mass spectrometry at an independent laboratory. Any lot testing below the threshold is rejected rather than sold.
Does LL-37 ship with a certificate of analysis?
Yes. A lot-specific certificate of analysis including the HPLC chromatogram and MS trace accompanies every LL-37 order and remains retrievable under batch reference SEQ-1082.
How should LL-37 be stored?
Sealed lyophilized LL-37 is stable at −20 °C for at least 24 months; once reconstituted, hold at 2–8 °C and use within about three weeks.
How fast does LL-37 ship?
Orders confirmed before 15:00 UTC dispatch the same working day in insulated, tracked cold-chain packaging, subject to the import rules of the destination country.
Is LL-37 sold for human use?
No. PureLabs supplies this compound strictly as reference material for in-vitro and laboratory research. It is not a medicine and is not for human or veterinary consumption.