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| Product Name | CAS 204248-78-2 Omiganan |
| Description | Omiganan is a new-generation synthetic cationic antimicrobial peptide. Its positively charged amino acid residues bind to negatively charged phospholipids and lipopolysaccharides on the microbial surface, and hydrophobic side chains insert into the cell membrane to form transmembrane pores, disrupting membrane barrier function and transmembrane potential to kill pathogens rapidly. Its membrane-targeting physical mechanism is less likely to induce bacterial resistance. This product exhibits excellent activity against Gram-positive bacteria, Gram-negative bacteria, fungi and some enveloped viruses, including multi-drug resistant strains such as methicillin-resistant *Staphylococcus aureus* (MRSA) and vancomycin-resistant *Enterococcus* (VRE). It also inhibits local pro-inflammatory cytokine release and alleviates inflammatory response. It is mainly used in research on topical anti-infective scenarios such as skin and mucosal infections and catheter-related infections, and is a core tool peptide for mechanism analysis of antimicrobial peptides and development of anti-drug-resistant bacterial drugs. |
| Peptide Purity (HPLC, %) | 95% / 98% / 99% |
| Free base molecular formula | C₇₇H₁₁₅N₂₅O₁₃ |
| Free base molecular weight (Da) | 1610.9, higher for hydrochloride/acetate form |
| Structure type | Linear cationic antimicrobial peptide, free form / hydrochloride |
Product Basic Information Table
| Product Standard English Name | Product Abbreviation / Alias | Function Tags (comma-separated) | Core Structure | Molecular Formula | Exact Mass (Da) | Average MW (Da) | Salt Form | Length (aa) |
| Omiganan | Omiganan; MBI-226 | Broad-spectrum cationic antimicrobial peptide, anti-MDR bacteria, topical anti-infective, anti-inflammatory | Synthetic linear cationic antimicrobial peptide rich in arginine and tryptophan residues; amphiphilic structure exerts bactericidal activity via physical membrane disruption | C₇₇H₁₁₅N₂₅O₁₃ | 1609.9 | 1610.9 | Free form / Hydrochloride | 12 |
Physicochemical Solubility & Storage Parameters
| Product Code | Appearance | Long-term Storage | Short-term Storage | Solution Stability | Solid Powder Stability |
| PEP-OMI001 | white powder | Store at -20°C, sealed, dry and protected from light. Aliquot for storage. | Stable for 1 month at 2–8°C in sealed dry condition; stable for short-term shipping at ambient temperature. | Stable for 14 days at 4°C. Freely soluble in acidic aqueous solution and dilute acetic acid; good solubility in neutral physiological buffer. Cationic peptide; avoid mixing with strong anionic substances. | Stable for 3 years at -20°C, dry and protected from light. |
Functional Description
| Product Code | Frontend Short Summary (for search list display) | Detailed Biological Function Description | Applicable Research Areas (comma-separated) | Targets / Pathways |
| PEP-OMI001 | Broad-spectrum cationic antimicrobial peptide with rapid bactericidal effect, low resistance and topical anti-inflammatory activity | Omiganan is a new-generation synthetic cationic antimicrobial peptide. Its positively charged arginine residues bind to negatively charged phospholipids and lipopolysaccharides on the microbial surface, and tryptophan hydrophobic side chains insert into the cell membrane to form transmembrane pores, disrupting membrane integrity and transmembrane potential to kill pathogens rapidly. This physical membrane-lytic mechanism is less likely to induce bacterial resistance. This product exhibits excellent activity against Gram-positive bacteria, Gram-negative bacteria, fungi and some enveloped viruses, including multi-drug resistant strains such as MRSA and VRE. It also inhibits local pro-inflammatory cytokine release and alleviates inflammatory response. It is mainly used in research on topical anti-infective scenarios such as skin and mucosal infections and catheter-related infections, and is a core tool peptide for mechanism analysis of antimicrobial peptides and development of anti-drug-resistant bacterial drugs. | Antibacterial peptide mechanism study, MDR bacterial infection research, topical anti-infective drug development, skin & mucosal infection research, host defense immunity study | Microbial cell membrane physical disruption; Local inflammatory regulatory pathway |
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