LL-37 (Cathelicidin)
LL-37 is a 37-residue cathelicidin-derived antimicrobial peptide supplied as a reference sequence for membrane and innate-immunity assays. Supplied in kits of ten sealed vials at 98.6% verified purity with a lot-specific certificate of analysis.
- Purity (HPLC)
- 98.6%
- Fill weight
- 5 mg/vial
- CAS number
- walk-in lot
- Form
- Lyophilized powder
- Assay
- RP-HPLC + mass spectrometry
- Storage
- −20 °C, protected from light
About LL-37 as a reference compound
LL-37 is a 37-residue cathelicidin-derived antimicrobial peptide supplied as a reference sequence for membrane and innate-immunity assays. Every PureLabs lot is produced under GMP-aligned synthesis controls, filled and sealed in a controlled environment, then assayed by an independent partner laboratory using reverse-phase HPLC with mass-spectrometric confirmation. Material is released only at or above the stated 98.6% threshold; anything below it is rejected rather than sold. The certificate of analysis carries the chromatogram and MS trace for the exact lot you receive and stays archived under reference PL-1266 for the life of the batch. Available in 1 kit configuration, each containing ten vials.
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 so the material never sees repeated freeze–thaw cycles.
LL-37 — frequently asked questions
Common laboratory questions about sourcing, purity, storage and shipping of LL-37.
What sizes of LL-37 can I order?
LL-37 ships in 1 configuration: 5 mg/vial · 10 vials/kit. Prices start at $105 per kit.
What purity is PureLabs LL-37?
Current stock assays at 98.6% by reverse-phase HPLC with mass-spectrometric confirmation from an independent laboratory. Lots below the threshold never reach the catalog.
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 order and remains retrievable under batch reference PL-1266.
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 quickly does LL-37 ship?
Orders confirmed before 15:00 UTC dispatch the same working day in insulated, tracked packaging, subject to the import rules of the destination country.
Is LL-37 sold for human use?
No. PureLabs supplies this material strictly as a reference compound for in-vitro and laboratory research. It is not a medicine and is not for human or veterinary consumption.