LL-37 is a cationic antimicrobial peptide belonging to the cathelicidin family, the only human cathelicidin, widely studied in innate immunity and host-defense research. It is supplied as a high-purity white lyophilized powder, >=99% by HPLC, in sealed vials for laboratory use. LL-37 is investigated for its antimicrobial, immunomodulatory and wound-healing properties, and is commonly applied in cell-culture, infection and inflammation research. As a host-defense peptide with a defined sequence, it does not carry a single unified CAS number. The lyophilized presentation provides good stability and reproducible reconstitution for consistent dosing. Strict batch quality control is maintained and COA can be provided on request. For storage keep sealed at 2-8 degree C away from light and moisture. The cathelicidin peptide is a major effector of the innate immune system, with direct antimicrobial activity and immunomodulatory actions on host cells. Investigators study its role in wound healing, inflammation and bacterial clearance in culture and animal models. The peptide is provided lyophilized in sealed vials with HPLC purity documentation. Each production lot is tracked from synthesis through lyophilization and final testing, ensuring consistent quality across batches. Product specifications, storage conditions and reconstitution recommendations are provided with every shipment, and our sales team responds promptly to technical inquiries. Long-term supply arrangements are possible for frequent buyers. For detailed specifications, quotations or technical support, please contact our sales team directly. WhatsApp: +852 4423 6619, contact person: Aurora, Email: 18963519387@163.com. We reply to all inquiries promptly and are glad to provide batch information and shipping options. YIWU SHUNXIAN TRADING CO., LTD. is a professional supplier of high-purity research-grade peptides and matching laboratory consumables, dedicated to supporting global research teams for biochemical and life-science studies. We bridge qualified peptide raw-material resources with stable international logistics service, offering researchers and industry partners a dependable source for their laboratory development projects.