Description

Erythromycin E_X000B_Discontinued is a specific, discontinued grade of the macrolide antibiotic Erythromycin. This product is offered to support legacy processes, research, and development where this particular material specification is required. It is primarily sought by professionals in the pharmaceutical, biotechnology, and fine chemical synthesis sectors for analytical reference, method validation, or specialized manufacturing needs.

Application

• Pharmaceutical Reference Standard: Used for analytical method development, validation, and quality control testing of antibiotic formulations.
• Legacy Process Support: Serves as a critical raw material for maintaining production of older drug formulations or products that require this specific discontinued grade.
• Research & Development: Employed in microbiological studies, stability testing, and investigations into antibiotic mechanisms of action or resistance.
• Fine Chemical Synthesis: Acts as a starting material or intermediate for the synthesis of novel macrolide derivatives or specialized chemical entities.

Basic Information

Product Name	Erythromycin E_X000B_Discontinued
CAS No.	41451-91-6
Molecular Formula	C37H67NO13
Molecular Weight	733.93 g/mol
Synonyms	Erythromycin; Erythromycin A; Erythrocin; Ilotycin; E-Mycin; Abbott-24091; (3R,4S,5S,6R,7R,9R,11R,12R,13S,14R)-6-{[(2S,3R,4S,6R)-4-(Dimethylamino)-3-hydroxy-6-methyloxan-2-yl]oxy}-14-ethyl-7,12,13-trihydroxy-4-{[(2R,4R,5S,6S)-5-hydroxy-4-methoxy-4,6-dimethyloxan-2-yl]oxy}-3,5,7,9,11,13-hexamethyl-1-oxacyclotetradecane-2,10-dione
EINECS	Contact for details

Quality Control

This product is supplied to meet the specifications of its original, discontinued grade. Quality is assured through rigorous analytical testing, including identity confirmation and purity assessment. A Certificate of Analysis (COA) detailing batch-specific results is provided with each shipment to ensure traceability and compliance with your quality protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed in a low-humidity environment to prevent moisture absorption and degradation.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 3.0%
Residue on Ignition	≤ 0.1%

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