{"kind":"compound","id":"ll-37","name":"LL-37","url":"https://costides.us/us/research/ll-37","last_verified":"2026-08-21","identity":{"cas":"154947-66-7","formula":"C205H340N60O53","mw":4493,"sequence":null,"sequence_3letter":null,"residues":null,"pubchem":16198951,"identity_note":null,"parent_ligand":null},"chunks":[{"id":"lead-ll-37","type":"definition","heading":"What is LL-37?","text":"LL-37 (LL37) is a Research Use Only chemical-identity and literature reference on Costides, not for human or veterinary use. Published identity includes CAS 154947-66-7, formula C205H340N60O53, average MW 4493 Da, PubChem CID 16198951. It is indexed as human cathelicidin antimicrobial peptide.","words":41},{"id":"def-ll-37","type":"definition","heading":"LL-37 overview","text":"LL-37 (LL37) is a Research Use Only chemical-identity and literature reference on Costides, not for human or veterinary use. Published identity includes CAS 154947-66-7, formula C205H340N60O53, average MW 4493 Da, PubChem CID 16198951. It is indexed as human cathelicidin antimicrobial peptide. Synonyms and vendor codes indexed here include LL37, Cathelicidin LL-37, CAMP peptide. This page does not describe administration or dosing.","words":61},{"id":"id-ll-37","type":"identity","heading":"LL-37 chemical identity","text":"LL-37 chemical identity: CAS 154947-66-7; formula C205H340N60O53; average MW 4493 Da; PubChem CID 16198951. Values come from the Costides peptide research index.","words":22},{"id":"policy-ll-37","type":"policy","heading":"Research Use Only","text":"Research Use Only. Not for human or veterinary use. This page indexes chemical identity and citations. It is not medical advice and does not describe administration or dosing.","words":28},{"id":"pass-what-ll-37","type":"definition","heading":"What is LL-37?","text":"LL-37 (LL37) is a Research Use Only chemical-identity and literature reference on Costides, not for human or veterinary use. Published identity includes CAS 154947-66-7, formula C205H340N60O53, average MW 4493 Da, PubChem CID 16198951. It is indexed as human cathelicidin antimicrobial peptide.","words":41},{"id":"pass-human-ll-37","type":"definition","heading":"Is LL-37 for human use?","text":"No. LL-37 (LL37) pages on Costides are Research Use Only reference materials. They are not medical advice and do not describe administration or dosing.","words":24},{"id":"pass-cas-ll-37","type":"definition","heading":"What is the CAS number of LL-37?","text":"The CAS number of LL-37 (LL37) is 154947-66-7. Formula and molecular weight appear in the identity table when retrieved.","words":19},{"id":"pass-mw-ll-37","type":"definition","heading":"What is the molecular weight of LL-37?","text":"The average molecular weight of LL-37 (LL37) listed on Costides is 4493 Da.","words":13},{"id":"faq-ll-37-1","type":"faq","heading":"What is LL-37?","text":"LL-37 (LL37) is a Research Use Only chemical-identity and literature reference on Costides, not for human or veterinary use. Published identity includes CAS 154947-66-7, formula C205H340N60O53, average MW 4493 Da, PubChem CID 16198951. It is indexed as human cathelicidin antimicrobial peptide. The CAS number of LL-37 is 154947-66-7. Research Use Only. Not for human or veterinary use.","words":57},{"id":"faq-ll-37-2","type":"faq","heading":"What is the CAS number of LL-37?","text":"The CAS number of LL-37 (LL37) is 154947-66-7. Formula and molecular weight appear in the identity table when retrieved.","words":19},{"id":"faq-ll-37-3","type":"faq","heading":"Is LL-37 for human use?","text":"No. LL-37 (LL37) pages on Costides are Research Use Only reference materials. They are not medical advice and do not describe administration or dosing.","words":24},{"id":"faq-ll-37-4","type":"faq","heading":"What is the molecular weight of LL-37?","text":"The average molecular weight of LL-37 (LL37) listed on Costides is 4493 Da.","words":13},{"id":"faq-ll-37-5","type":"faq","heading":"Can I buy LL-37 from Costides?","text":"Yes. LL-37 may appear in the Costides catalog as a Research Use Only 10-pack when published. Check the product listing for SKU, price, and CoA lots.","words":26},{"id":"faq-ll-37-6","type":"faq","heading":"Where does identity data for LL-37 come from?","text":"Costides indexes registry and bibliographic sources (PubChem, CAS Common Chemistry, PubMed permalinks) when available. Outcome or efficacy claims are not restated on this page.","words":24},{"id":"cite-ll-37-1","type":"citation","heading":"PubChem CID 16198951","text":"PubChem CID 16198951. https://pubchem.ncbi.nlm.nih.gov/compound/16198951","words":4},{"id":"cite-ll-37-2","type":"citation","heading":"CAS Common Chemistry 154947-66-7","text":"CAS Common Chemistry 154947-66-7. https://commonchemistry.cas.org/detail?cas_rn=154947-66-7","words":5},{"id":"cite-ll-37-3","type":"citation","heading":"Immunomodulatory Effects of Poly-D,L-Lactic Acid on LL-37-Driven Rosacea-like Inflammation via Suppression of mTORC1 Signaling.","text":"Immunomodulatory Effects of Poly-D,L-Lactic Acid on LL-37-Driven Rosacea-like Inflammation via Suppression of mTORC1 Signaling.. PMID 42511767. https://pubmed.ncbi.nlm.nih.gov/42511767/","words":17},{"id":"cite-ll-37-4","type":"citation","heading":"DOI for PMID 42511767","text":"DOI for PMID 42511767. PMID 42511767. https://doi.org/10.3390/ijms27146425","words":7},{"id":"cite-ll-37-5","type":"citation","heading":"Bile salt-mediated adaptation of Bacteroides spp.: in vitro analysis of colonization and metabolism.","text":"Bile salt-mediated adaptation of Bacteroides spp.: in vitro analysis of colonization and metabolism.. PMID 42492756. https://pubmed.ncbi.nlm.nih.gov/42492756/","words":16},{"id":"cite-ll-37-6","type":"citation","heading":"DOI for PMID 42492756","text":"DOI for PMID 42492756. PMID 42492756. https://doi.org/10.1016/j.anaerobe.2026.103063","words":7}],"faqs":[{"question":"What is LL-37?","answer":"LL-37 (LL37) is a Research Use Only chemical-identity and literature reference on Costides, not for human or veterinary use. Published identity includes CAS 154947-66-7, formula C205H340N60O53, average MW 4493 Da, PubChem CID 16198951. It is indexed as human cathelicidin antimicrobial peptide. The CAS number of LL-37 is 154947-66-7. Research Use Only. Not for human or veterinary use."},{"question":"What is the CAS number of LL-37?","answer":"The CAS number of LL-37 (LL37) is 154947-66-7. Formula and molecular weight appear in the identity table when retrieved."},{"question":"Is LL-37 for human use?","answer":"No. LL-37 (LL37) pages on Costides are Research Use Only reference materials. They are not medical advice and do not describe administration or dosing."},{"question":"What is the molecular weight of LL-37?","answer":"The average molecular weight of LL-37 (LL37) listed on Costides is 4493 Da."},{"question":"Can I buy LL-37 from Costides?","answer":"Yes. LL-37 may appear in the Costides catalog as a Research Use Only 10-pack when published. Check the product listing for SKU, price, and CoA lots."},{"question":"Where does identity data for LL-37 come from?","answer":"Costides indexes registry and bibliographic sources (PubChem, CAS Common Chemistry, PubMed permalinks) when available. Outcome or efficacy claims are not restated on this page."}],"links":[{"rel":"canonical","href":"https://costides.us/us/research/ll-37"},{"rel":"rag","href":"https://costides.us/api/rag/compound/ll-37"},{"rel":"cas","href":"https://costides.us/us/cas/154947-66-7"},{"rel":"llms","href":"https://costides.us/llms.txt"}]}