Polymyxin B sulfate
Polymyxin B sulfate is a complex mixture of cyclic polypeptides derived from the fermentation of the soil bacterium Bacillus polymyxa. As a member of the polymyxin family, it is characterized by its unique structure, consisting of a cyclic peptide ring attached to a fatty acid side chain. In its sulfate salt form, the material exhibits high water solubility and is typically processed as a white to buff-colored hygroscopic powder. Its chemical stability is sensitive to environmental factors such as light, moisture, and extreme pH levels, requiring careful storage in controlled, desiccated conditions.
This material is highly valued in technical and scientific sectors for its specific affinity for the outer membranes of Gram-negative bacteria. By interacting with the lipopolysaccharide components of these membranes, it serves as a critical tool in molecular biology and biochemical research. Its role as a potent antimicrobial agent makes it a staple in laboratory environments where the control of microbial growth or the study of membrane integrity is required.
• In microbiological research and cell culture, Polymyxin B sulfate is frequently employed as a selective agent within growth media. It effectively inhibits the growth of most Gram-negative bacteria, allowing for the isolation or maintenance of specific resistant strains or other organisms in a controlled environment.
• The compound is extensively used in biochemical assays to study the structure and function of cell membranes. Due to its ability to bind specifically to the lipid A portion of lipopolysaccharides (LPS), it is a vital reagent for neutralizing endotoxins and investigating the mechanisms of membrane permeability and disruption.
• Within the pharmaceutical and veterinary research sectors, this material serves as a primary active ingredient in the development of topical, ophthalmic, and otic formulations. Its broad-spectrum activity against Gram-negative pathogens makes it a cornerstone for experimental treatments targeting localized infections.
• In diagnostic and analytical chemistry, Polymyxin B sulfate is utilized in the preparation of specialized assays and sensors designed to detect bacterial contamination. Its high affinity for endotoxins allows for the development of sensitive detection systems used in quality control and environmental monitoring.
Product Name: Polymyxin B sulfate
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