LL-37
Synthetic 37-residue peptide supplied by Loti Labs as lyophilized powder for laboratory research. Specifications, the current certificate of analysis and the full batch history, all on one page.
LL-37 5mg. For laboratory, analytical and research use only.Compound specifications
| Compound | LL-37 |
| Class | Synthetic 37-residue peptide |
| Molecular formula | C205H340N60O53 |
| Molecular weight | 4493 g/mol |
| CAS number | 154947-66-7 |
| Form | Lyophilized powder, sealed vial |
| Formats | 5 mg vial |
Latest certificates of analysis
5 mg vial
Batch history
| Test date | Format | Batch | Purity | Identity | Laboratory | |
|---|---|---|---|---|---|---|
| Feb 4, 2026 | 5 mg vial | LLL37226 | 99.57% | Conforms | SR Bio Labs | Certificate |
How every batch is tested
Every Loti Labs batch is tested by an independent, U.S.-based third-party laboratory. Purity is measured by HPLC and identity is confirmed by mass spectrometry. Where a certificate includes an endotoxin screen, the result is shown above. Each certificate is archived permanently under its batch number, so earlier batches stay on record after a new one arrives. Search the complete COA archive.
Questions researchers ask
What purity is the current LL-37 batch?
5 mg vial: batch LLL37226 tested at 99.57% purity by HPLC on Feb 4, 2026, identity confirmed by mass spectrometry.
What is the molecular formula and weight of LL-37?
LL-37 has molecular formula C205H340N60O53 and a molecular weight of 4493 g/mol, CAS 154947-66-7.
How do I find the certificate for my vial?
Match the lot number printed on the vial label to the batch column in the history table, or search it in the Loti Labs COA archive. Every certificate is kept permanently under its batch number.
What is LL-37 from Loti Labs intended for?
Loti Labs supplies LL-37 strictly for laboratory, analytical and research use. It is not for human or veterinary use, and it is not a drug, food or cosmetic.
Available to registered researchers
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RESEARCH USE ONLY. This page is provided for laboratory, analytical and research reference. Products are not drugs, foods or cosmetics and are not for human or veterinary use.