What sizes does LL-37 come in?

LL-37 comes in 5mg vials (lyophilized peptide), from $59.99. Ordering 3, 5 or 10 vials takes 3%, 6% or 12% off.

The current batch (JNK-103738) was tested on Feb 2, 2026 by HPLC (Janoshik Analytical), measuring 99.5% purity. Its certificate of analysis is published on this page and in the public COA registry.

When does LL-37 ship?

Orders placed before 2 pm CT on a business day ship the same day from the US. Shipping is free on orders over $100 to the contiguous US.

Is LL-37 for human use?

No. LL-37 is sold strictly for in-vitro and laboratory research. It is not for human or veterinary use.

Immune

LL-37

Name: LL-37
Brand: Tidal Peptides
SKU: TDL-LL37-5MG
Price: 59.99 USD
Availability: InStock

Synthetic cathelicidin-derived antimicrobial peptide for innate immunity and host-defense research.

$59.99

/ 5mg vial · TDL-LL37-5MG

Size

Bundle & Save

Subtotal

$59.99

Ships
Same-day · by 2 pm CT
Free
Shipping over $100, contiguous US
Pay
Card · Crypto · ACH

Every vial, fully documented.

Certificate of analysis · Batch JNK-103738Current

Compound

LL-37

Batch

JNK-103738

Verify code

9ZRJD

Tested

Feb 2, 2026

Method

HPLC (Janoshik Analytical)

Purity

99.5%

Mass match

—

Appearance

—

Storage

2–8°C, lyophilized

HPLC trace · 220 nm

No chromatogram data available.

Research profile

LL-37 is a research peptide used in preclinical laboratory models involving metabolic, mitochondrial, or immune pathways.

What is it?

LL-37 is a synthetic form of a human cathelicidin-derived antimicrobial peptide studied in investigational and in vitro research settings. It corresponds to the C-terminal fragment of the cathelicidin precursor hCAP18 and is studied in models of antimicrobial activity and immune cell signaling.

In preclinical and laboratory research models, LL-37 has been examined for antimicrobial membrane activity, immune cell signaling, and inflammatory pathway signaling. It has also been studied in epithelial barrier, cell migration, and angiogenesis models, and is used in experimental work on host defense peptide biology.

Mechanism of Interest

Membrane Disruption — Studied for antimicrobial membrane activity against bacterial models in vitro.
Cathelicidin Family — Investigated as the human cathelicidin-derived host defense peptide.
Immunomodulation — Examined for chemotactic and cytokine-modulating effects in cell culture.

Key Research Applications

Host defense peptide research
Antimicrobial mechanism studies
Innate immunity modeling

HANDLING & STORAGE

Lyophilized: Store at –20°C, protect from light and moisture.

Reconstituted: Store at 2–8°C, avoid freeze–thaw cycles.

RESEARCH USE ONLY

This product is supplied strictly for laboratory, research, and development use. Not for human consumption or therapeutic application.

All compounds sold by Tidal are intended exclusively for in-vitro and laboratory research. We do not market our products for human or veterinary use. By placing an order, purchasers acknowledge they are qualified researchers and that materials will be used in compliance with applicable institutional and regulatory standards.

Questions

What sizes does LL-37 come in?: LL-37 comes in 5mg vials (lyophilized peptide), from $59.99. Ordering 3, 5 or 10 vials takes 3%, 6% or 12% off.
How is LL-37 tested?: The current batch (JNK-103738) was tested on Feb 2, 2026 by HPLC (Janoshik Analytical), measuring 99.5% purity. Its certificate of analysis is published on this page and in the public COA registry. Open the COA registry →
When does LL-37 ship?: Orders placed before 2 pm CT on a business day ship the same day from the US. Shipping is free on orders over $100 to the contiguous US. Shipping policy →
Is LL-37 for human use?: No. LL-37 is sold strictly for in-vitro and laboratory research. It is not for human or veterinary use.

Adjacent