Research Use Only | Not for Human Consumption

LL-37

LL-37 is a synthetic research peptide supplied for controlled laboratory studies. Researchers use this compound in structured research focused on peptide signaling and interaction behavior.

CAS#

Formula

Molar Mass

54947-66-7
C₂₀₅H₃₄₀N₆₀O₅₃
4493.32 g/mol

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Price per unit

$59.00

Research use only.

What is LL-37?

LL-37 is a synthetic research peptide supplied for controlled laboratory investigation. Researchers study this peptide in structured research focused on peptide signaling, molecular interaction behavior, and sequence specific activity within experimental models. Its defined peptide structure helps laboratories design repeatable studies under stable and standardized research conditions.

Because LL-37 represents a well defined peptide sequence, researchers actively use it to examine how peptides interact within controlled experimental environments. This focused approach helps research teams study interaction patterns, signaling behavior, and sequence related responses while maintaining strong control over experimental variables. As a result, laboratories collect clear and repeatable data across multiple study phases.

In laboratory settings, scientists handle LL-37 using standard peptide preparation and safety procedures. The peptide format allows researchers to measure accurately and apply the compound in a controlled manner during experiments. Therefore, research teams maintain stable testing conditions and focus on observation, documentation, and data analysis without unnecessary variation.

Researchers value LL-37 for its compatibility with structured research workflows and studies that involve defined peptide sequences. Its consistent composition helps reduce variability during testing and supports comparison across experiments involving related peptides. In addition, its predictable handling characteristics support long term laboratory projects that require reliable research materials.

Ongoing scientific research continues to include LL-37 in peptide focused laboratory studies. Researchers rely on its defined sequence, stable behavior, and suitability for controlled research models to support advanced experimental work involving peptide signaling and interaction analysis.

What is LL-37 studied for?

LL-37 is a 37-amino acid cationic peptide and the only known human member of the cathelicidin family of antimicrobial peptides. Derived from the C-terminal region of the hCAP18 precursor protein, LL-37 is expressed in various immune and epithelial cells. In preclinical and laboratory research, LL-37 has been investigated for its role in innate immunity, host defense mechanisms, and cell signaling pathways.

Published studies have explored LL-37 in the context of:

  • Antimicrobial activity against bacterial, viral, and fungal isolates in vitro
  • Innate immune response and inflammatory signaling
  • Wound healing and epithelial cell migration models
  • Biofilm disruption and membrane interaction studies
  • Angiogenesis and tissue remodeling research

How should LL-37 be stored?

All of our products are manufactured using the Lyophilization (Freeze Drying) process, which ensures that our products remain 100% stable for shipping for up to 3-4 months. Once the peptides are reconstituted (mixed with bacteriostatic water), they must be stored in the fridge to maintain stability. After reconstitution, the peptides will remain stable for up to 30 days.

Lyophilised (Unopened)
−20°C for up to 24 months
Reconstitution Solvent
Bacteriostatic water recommended
Reconstituted Solution
2–8°C for up to 28 days
Avoid
Repeated freeze-thaw cycles

Handling Notes

Reconstitute slowly by adding solvent to the side of the vial and allowing it to dissolve without agitation. Do not shake. Store away from direct light. All products are shipped with dry ice or cold packs to maintain cold-chain integrity.

Certificate of Analysis

All LL-37 batches are independently tested by a third-party laboratory for purity and identity verification via HPLC with UV detection coupled with Mass Spectrometry.

Test Method Specification Result
Peptide Identity Mass Spectrometry Confirmed Identity Confirmed
HPLC Purity Reverse-Phase HPLC ≥99% 99.2% — Pass
Endotoxin (LAL) LAL Assay <1.0 EU/mg <0.8 EU/mg — Pass
Heavy Metals ICP-MS Below USP limits All Below Threshold
Appearance Visual White lyophilised powder Pass
Independent Lab Verified · Full PDF COA Available on Request

Related Research Compounds

LL-37 is available for laboratory research purposes only. © 2026 Pharma Peptides LLC | Product Catalog | Research Use Only