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LOT C203Peptidkauf seal: batch tested, lab report per batch
LL-37 5 mg vial with Peptidkauf label and batch number

Immune peptides · Single peptide

LL-37

LL-37 is the only human cathelicidin, an endogenous antimicrobial peptide of 37 amino acids. It inserts into bacterial membranes and is studied for defence against bacteria, fungi and viruses, biofilms and wound healing.

✓ HPLC 99.422 %Janoshik · batch C203Report ↗

€49.99incl. 19% VAT (DE), plus shipping

In stock

  • Free shipping · Germany from €250, EU from €350
  • Shipped from the EU · Ships within 24–48 hours of payment
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Specification

SKULL37
Substance classImmune peptides · Single peptide
CAS number154947-66-7
SequenceLLGDFFRKSKEKIGKEFKRIVQRIKDFLRNLVPRTES
Molecular formulaC₂₀₅H₃₄₀N₆₀O₅₃
Molar mass4,493 g/mol
FormLyophilized powder
Purity (current batch)99.422 % (HPLC)
Storage−20 °C, dry and protected from light; 2–8 °C after reconstitution
In the peptide lexiconLL-37

Batches & analytics

More vials, lower unit price

“3 for 2 on all peptides – the cheapest one is free” – applies across all peptides; lab supplies are excluded.

QuantityTotalPer mgSaving
1 × 5mg€49.99€10.00
3 × 5mg€99.98€6.67−33 %
6 × 5mg€199.96€6.67−33 %

Frequently bought together

What the lab needs to dissolve and measure.

3 items€23.97

FAQ about LL-37

How should LL-37 be stored?

−20 °C, dry and protected from light; 2–8 °C after reconstitution. The storage note applies to the sealed product; see "Storage & handling" for details.

What is LL-37 dissolved in in the lab?

Lyophilized peptides are usually reconstituted in the lab with bacteriostatic water (BAC water) or sterile water. Calculate the resulting concentration with our peptide calculator. We give no dosing information.

Is there a lab report for LL-37?

Yes. The current batch C203 was tested by Janoshik on 03/07/2026: HPLC purity 99.422 %. Open the full report above under batches or in the lab report archive.

How fast is LL-37 delivered?

We ship within 24–48 hours of payment. DHL delivers to Germany in 1–2 working days, to the rest of the EU in 2–6.

Is LL-37 intended for use in humans?

No. All products are intended exclusively for research and laboratory purposes and not for use in humans or animals.

Peptide calculator → · Storage & handling →

Research profile

What is LL-37?

LL-37 is cleaved from the precursor protein hCAP18 and starts with two leucines, hence the name (4,493 g/mol). It forms a positively charged amphipathic helix that inserts into the negatively charged membranes of bacteria and makes them leaky.

Research status

Studies examine direct activity against pathogens, biofilm inhibition, recruitment of immune cells and roles in wound healing and skin diseases such as psoriasis and rosacea. LL-37 is a standard tool of antimicrobial peptide research.

Status

Not approved. Research use only.

ARA-290

Lyophilized powder

✓ HPLC 99.61 % · Janoshik ↗

€39.99€4.00/mg

In stock

Amount

KPV

Lyophilized powder

✓ HPLC 99.49 % · Janoshik ↗

€39.99€4.00/mg

In stock

Amount