LL-37 is the only cathelicidin-derived antimicrobial peptide found in humans. This 37-amino-acid peptide (beginning with two leucine residues, hence 'LL') is a critical component of the innate immune system, produced by neutrophils, macrophages, and epithelial cells. LL-37 exhibits broad-spectrum antimicrobial activity against bacteria, viruses, and fungi through direct membrane disruption. Beyond its antimicrobial role, LL-37 modulates immune responses including chemotaxis, inflammasome activation, and wound healing. Research interest in LL-37 has surged due to its potential applications in antibiotic-resistant infections and immune modulation. We supply LL-37 in high-purity lyophilized form for pharmaceutical research and antimicrobial development programs.
| Molecular Weight | 4493.33 g/mol |
| Purity | ≥95% (HPLC) |
| Form | Lyophilized powder |
| Storage | -20°C |
| CAS | 154947-66-7 |
According to comprehensive reviews in the Journal of Peptide Science, synthetic therapeutic peptides represent one of the fastest-growing segments of the pharmaceutical industry.
Research published in Trends in Pharmacological Sciences (2023) highlights the importance of peptide purity exceeding 99% for reproducible preclinical research outcomes.
Human antimicrobial peptide with broad-spectrum antimicrobial activity and immunomodulatory properties for pharmaceutical research.
We supply LL-37 (Cathelicidin) at ≥95% (HPLC) purity. Higher purity grades are available for pharmaceutical applications upon request.
Minimum order quantities for wholesale LL-37 (Cathelicidin) depend on the quantity and purity grade required. Contact our sales team for specific pricing and MOQ information.
LL-37 (Cathelicidin) should be stored at -20°C in a desiccated environment. Proper cold-chain shipping is maintained for all deliveries.
Every batch includes a comprehensive Certificate of Analysis with HPLC purity data (≥99%), mass spectrometry confirmation, amino acid analysis, endotoxin testing (<0.5 EU/mg), and residual solvent analysis per ICH Q3C guidelines.
In-stock peptides are dispatched within 48 hours of order confirmation. International delivery takes 5–7 business days via temperature-controlled shipping. Express 2–3 day options available. Our on-time delivery rate is 99.2%.
Yes. Dr. Peptides provides Drug Master File (DMF) documentation, Certificates of Origin, MSDS/SDS in multiple languages, and stability data packages compliant with ICH guidelines for regulatory submissions.
Dr. Peptides offers a 100% money-back quality guarantee. If any product fails to meet the purity specifications stated on its Certificate of Analysis, we provide a full replacement or refund within 48 hours of claim receipt.
All shipments use pharmaceutical-grade insulated packaging with qualified gel packs maintaining 2–8°C for up to 96 hours. Each package includes a temperature data logger for verification upon receipt, per WHO guidelines for temperature-sensitive pharmaceuticals.
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