LL-37 5mg

LL-37 5mg is the 37-residue human cathelicidin antimicrobial peptide, supplied as a 5mg research vial. Each batch is HPLC-verified at 99.1% purity and is independently tested by Renew Labs, a third-party analytical lab, with a batch-specific Certificate of Analysis (COA) included. For laboratory and research use only. Not for human consumption.

Research Applications

LL-37 is the only cathelicidin-derived antimicrobial peptide found in humans. It is a 37-residue, amphipathic, helical peptide studied for membrane interaction with bacteria, innate immune signaling, and host-defense mechanisms. Research models have investigated LL-37 in antimicrobial activity, biofilm, wound repair, and immune modulation programs.

Certificate of Analysis (COA): Batch LL37-05102601

Batch No.: LL37-05102601 | Mfg Date: Oct 15, 2026 | Retest Date: Oct 15, 2028 | Storage: short term 2-8°C, long term below -20°C, protected from light and moisture.

Purity and Verification

Every batch of Kynetide LL-37 is independently tested by Renew Labs. This batch of LL-37 is verified at 99.1% HPLC purity, exceeding the NLT 98.0% specification. The full analytical panel covers HPLC, ESI mass spectrometry, assay content, Karl Fischer water analysis, bacterial endotoxin testing, and residual solvents (ICH Q3C), supporting reliable, reproducible research results.

Research Literature

LL-37 has been studied in peer-reviewed research. Selected published literature includes:

• Dürr UH, Sudheendra US, Ramamoorthy A. “LL-37, the only human member of the cathelicidin family of antimicrobial peptides.” Biochimica et Biophysica Acta, 2006. PMID: 16716248

These citations are provided for research reference only and do not imply any claim about the effects of this product.

Frequently Asked Questions

What is LL-37?
LL-37 is the 37-residue human cathelicidin antimicrobial peptide. Kynetide supplies it as a 5mg research vial.

What is LL-37 studied for?
LL-37 is studied for antimicrobial membrane activity, innate immunity, host-defense signaling, biofilm, and wound repair in laboratory models.

What is the CAS number and molecular formula of LL-37?
LL-37 has CAS No. 154947-66-7, molecular formula C205H340N60O53, and molecular weight 4493.3 g/mol.

What purity is this batch?
Batch LL37-05102601 is verified at 99.1% HPLC purity, exceeding the NLT 98.0% specification, with mass spectrometry, endotoxin, water content, and residual solvent testing on the COA.

How does this LL-37 product compare to other options?
LL-37 is a full-length 37 amino acid human peptide, while many research peptides are short fragments. Its amphipathic helical structure is the focus of membrane interaction research.

How should LL-37 be stored?
Store lyophilized material at 2-8°C short term; for long-term storage the batch COA specifies below -20°C, protected from light and moisture.

What documentation comes with each order?
Each order includes a batch-specific third-party COA showing HPLC purity, mass spectrum, assay content, water content, endotoxin, and residual solvent results.

Is this product for human use?
No. This product is strictly for laboratory and research use only and is not intended for human consumption.

For laboratory and research use only. Not for human consumption. This product is not a drug, supplement, food, or cosmetic and is not intended to diagnose, treat, cure, or prevent any disease.