LL37 Product Introduction
LL37, also known as Cathelicidin LL-37, is a high-activity synthetic polypeptide with the fixed CAS number 59756-95-5. It is a linear functional peptide composed of standard amino acid sequences, with accurate molecular weight and stable molecular conformation. Compared with ordinary short-chain peptides, LL37 has a unique structural arrangement, which endows it with excellent structural stability and good biochemical compatibility in conventional experimental environments. It is widely used in biochemical research, immunology experiments, microbial correlation research and high-end raw material formulation fields.
This product adopts mature Fmoc solid-phase peptide synthesis process for standardized production. High-purity protected amino acids and low-residue coupling reagents are selected as core raw materials, and all incoming materials pass strict purity screening and component detection before production. The whole synthesis, deprotection and peptide chain assembly processes are completed in constant-temperature dust-free purification workshops. Core reaction parameters are precisely controlled and fully monitored to ensure that each batch of LL37 products has complete and consistent molecular structure, avoiding defective fragments and structural deviations.
After crude peptide synthesis, the product undergoes professional cleavage, desalting and multi-stage reversed-phase HPLC high-precision purification. The purification process effectively removes residual organic solvents, unreacted raw materials, intermediate byproducts and miscellaneous peptide fragments. The finished product is prepared by vacuum lyophilization, presenting white to off-white loose lyophilized powder with uniform texture, no agglomeration, no discoloration and no visible foreign impurities. The HPLC core purity reaches up to 99.8%, with single impurity controlled below 0.5%, fully meeting international laboratory and fine chemical raw material standards.
In terms of physical properties, LL37 lyophilized powder has excellent water solubility, which can be quickly and completely dissolved in purified water and neutral buffer solution to form clear, uniform and stable transparent solution without precipitation or suspended particles. Each batch of products implements full-process quality inspection, including mass spectrometry identification, purity testing, moisture detection, heavy metal residue and microbial limit detection. Complete COA certificates, HPLC chromatograms and batch inspection reports are provided with each shipment for customer verification and filing.
Available in multiple packaging specifications including trial vials and industrial bulk packages, the product supports flexible customized orders. Stored in sealed, dry, light-proof and low-temperature (-20°C) environment, the product can maintain long-term structural and chemical stability. With reliable batch consistency, stable activity and complete qualification documents, LL37 has become a high-quality and trustworthy synthetic peptide raw material for global scientific research institutions and biochemical enterprises.