Description

Efrotomycin B CAS NO 96956-38-6 is a specialized antibiotic compound belonging to the polyether ionophore class. This high-purity chemical is valued for its specific biological activity and is a critical intermediate in advanced pharmaceutical research and development. It is primarily utilized by research institutions and pharmaceutical companies engaged in the discovery of novel antimicrobial agents and veterinary medicines.

Application

• Pharmaceutical Research & Development: Serves as a key reference standard and active pharmaceutical ingredient (API) intermediate in the development of new antibiotic therapies.
• Veterinary Medicine: Investigated for use in animal health products, particularly as a growth promoter and for treating specific bacterial infections in livestock.
• Microbiological Studies: Used as a selective agent in microbiological media to study bacterial resistance mechanisms and spectrum of activity.
• Biochemical Research: Employed in studies exploring ion transport across cell membranes due to its ionophore properties.
• Standards & Calibration: Provides a high-purity standard for analytical method development and quality control in antibiotic manufacturing.

Basic Information

Product Name	Efrotomycin B
CAS No.	96956-38-6
Molecular Formula	C39H62O14
Molecular Weight	754.9 g/mol
Synonyms	Efrotomycin B; Antibiotic X-5108; Antibiotic A-28695B; Efrotomycin; (2R,4S,5R,6R,7S,9S,10S,11R,12S,13S,15R,17R,19S,20R,22S,23R,24S,25S,26R,27S,28R)-5-Ethyl-2,4,26,28-tetrahydroxy-6,10,12,15,17,20,22,24-octamethyl-9,23,27-tris(2-methylbutyl)-3,21-dioxa-13-azatetracyclo[21.3.1.17,11.114,18]octacosa-14(18),16-diene-8,25-dione
EINECS	Contact for details

Quality Control

Our Efrotomycin B is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC for purity, identity confirmation by IR and NMR spectroscopy, and stringent controls for residual solvents and impurities. A Certificate of Analysis (COA) detailing all specifications and test results is provided with every shipment to ensure traceability and compliance with your research or production requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at 2-8°C. This product is hygroscopic (moisture-sensitive) and must be kept under inert atmosphere or desiccated conditions after opening to maintain stability and potency.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to reference spectrum
Identification (HPLC)	Retention time matches reference standard
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 3.0%
Residual Solvents (GC)	Meets ICH guidelines
Heavy Metals	≤ 20 ppm
Specific Rotation	Contact for details

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