Description

Aurosporin CAS NO 51990-34-2 is a potent polypeptide antibiotic belonging to the polymyxin class, known for its bactericidal activity against Gram-negative bacteria. Its primary value lies in its critical role as an active pharmaceutical ingredient (API) in formulations for treating serious infections, particularly those resistant to other antibiotics. This product is essential for pharmaceutical manufacturers, research institutions, and veterinary medicine developers requiring a high-purity, reliable antibiotic component.

Application

• Pharmaceutical API: Core active ingredient in injectable and topical antibiotic formulations for human use.
• Veterinary Medicine: Used in the production of treatments for bacterial infections in livestock and companion animals.
• Microbiological Research: Serves as a selective agent in culture media and as a tool for studying bacterial membrane structure and function.
• Combination Therapies: Formulated with other antibiotics to combat multi-drug resistant bacterial strains.
• Reference Standard: Utilized as a certified reference material (CRM) for quality control and analytical method development in laboratories.

Basic Information

Product Name	Aurosporin
CAS No.	51990-34-2
Molecular Formula	C56H98N16O13
Molecular Weight	1203.5 g/mol
Synonyms	Polymyxin B Sulfate; Polymyxin B; Aerosporin; Polyfax; Polymyxin B1; Polymyxin B2; Polymyxin E (Colistin) is a related but distinct compound.
EINECS	Contact for details

Quality Control

Our Aurosporin is manufactured and tested under strict quality management systems. Each batch is analyzed to meet high-purity standards suitable for pharmaceutical applications, with testing typically including identification, potency (assay), and specific impurity profiles. Certificates of Analysis (COA) detailing all test results are provided with each shipment to ensure full traceability and compliance with your quality requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept in a dry environment to maintain stability and potency. For long-term storage, consider desiccated conditions.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to reference standard
Assay (HPLC)	≥ 650 IU/mg (on dried basis)
Loss on Drying	≤ 7.0 %
Sulfate Content	15.0 - 17.0 %
pH (1% Solution)	5.0 - 7.5
Related Substances (HPLC)	Complies with individual and total limits
Bacterial Endotoxins	< 0.5 EU/mg

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.