Polypeptides
Polypeptides
Polypeptide antibiotics are APIs composed of cyclic or linear peptide structures that disrupt bacterial cell membranes, leading to rapid bactericidal effects. Key members include polymyxins (colistin), bacitracin, and tyrothricin. They are active primarily against multidrug-resistant Gram-negative organisms by binding to lipopolysaccharides and altering membrane permeability. Due to nephrotoxicity and neurotoxicity concerns, systemic use is limited to severe infections such as carbapenem-resistant Acinetobacter or Pseudomonas. Topical and ophthalmic formulations are widely used for skin and eye infections. Polypeptides have regained importance in the era of antimicrobial resistance as last-resort therapies.
Unit Price:Get Price
CAS No.:77554-83-7
Grade:Pharmacy Grade
Content:99.90%
Packaging:Customizable
Unit Price:Get Price
CAS No.:78361-78-1
Grade:Pharmacy Grade
Content:99.90%
Packaging:Customizable
Unit Price:Get Price
CAS No.:79053-93-3
Grade:Pharmacy Grade
Content:99.90%
Packaging:Customizable
Unit Price:Get Price
CAS No.:79395-85-0
Grade:Pharmacy Grade
Content:99.90%
Packaging:Customizable
Unit Price:Get Price
CAS No.:79774-99-5
Grade:Pharmacy Grade
Content:99.90%
Packaging:Customizable
Unit Price:Get Price
CAS No.:8011-61-8
Grade:Pharmacy Grade
Content:99.90%
Packaging:Customizable
Unit Price:Get Price
CAS No.:8068-28-8
Grade:Pharmacy Grade
Content:99.90%
Packaging:Customizable
Unit Price:Get Price
CAS No.:8068-37-9
Grade:Pharmacy Grade
Content:99.90%
Packaging:Customizable
Why choose US
Trusted Manufacturer
With our own production facilities, we ensure consistent quality, reliable supply, and full traceability.
Rigorous Quality Assurance
Each batch undergoes strict QC, accompanied by COA, MSDS, and full compliance with international standards.
Advanced R&D Expertise
Our in-house lab drives process innovation, new product development, and tailored synthesis solutions.