LL-37 – High Purity Premium Peptide API

Product Overview LL-37 is the only human endogenous cathelicidin-derived antimicrobial peptide consisting of 37 amino acid residues. It exhibits broad-spectrum bactericidal activity against gram-positive bacteria, gram-negative bacteria, fungi and enveloped viruses. Besides antimicrobial effects, it also regulates innate immunity, inhibits excessive inflammatory response, promotes epidermal wound angiogenesis and accelerates skin mucosal tissue repair. It is applied in laboratory research including broad-spectrum microbial inhibition, innate immune regulation, cutaneous inflammation remission, mucosal wound repair and antimicrobial peptide drug resistance mechanism research. It is extensively adopted in antibacterial signaling pathway exploration, anti-inflammatory pharmacodynamic verification and host defense peptide pharmacological evaluation. Adopting optimized recombinant expression and solid-phase peptide dual synthesis technology, the product boasts outstanding water solubility and stable alpha-helix spatial structure after reconstitution, with durable biological activity. CAS Number: 154947-66-7

Technical Specifications & Quality Standards

HPLC Purity: ≥99.0% Identity Test: HPLC verification + complete mass spectrometry peptide sequencing, molecular weight fully matches theoretical standard value

Appearance: Aseptic lyophilized white fine powder

Strict CQA Quality Control: Full-item detection including residual organic solvents, heavy metal content, bacterial endotoxin, microbiological limits, complete peptide sequence validation and secondary structure stability test; The entire production line follows standardized GMP management system, guaranteeing uniform quality among different batches.

Supply & Order Instructions

Production Capacity: Stable large-scale manufacturing available, supporting kilogram-level bulk procurement and small-volume trial sample orders

Lead Time: Bulk kilogram orders need one month advance reservation owing to complex helix structure purification and multi-round strict quality inspection processes; sample orders enjoy shorter delivery cycle.

Quality Assurance

Each shipment batch is attached with a full official Certificate of Analysis (COA). The product maintains purity over 99.0% with intact biological activity; third-party independent laboratory re-inspection is acceptable for purchasers’ authenticity confirmation.

Payment Options

Alibaba Trade Assurance, PayPal, USDT, Bank Wire Transfer, Western Union

Core Advantages

Standard regular packaging: inner glass vial + external plastic box, suitable for long-term low-temperature sealed preservation In-house professional peptide R&D laboratory team, providing customized truncation modification service

Confidential worldwide delivery equipped with dedicated cold-chain packaging to prevent helix structure denaturation during transportation