Description

Spiramycin Iii CAS NO 24916-52-7 is a specific, high-purity component of the spiramycin macrolide antibiotic complex, valued for its targeted biological activity. This compound is critical for research and development in the pharmaceutical sector, where precise molecular structure and purity are paramount. It is primarily required by manufacturers of active pharmaceutical ingredients (APIs), research institutions, and quality control laboratories for analytical standards, process development, and formulation studies.

Application

• As a reference standard in analytical chemistry for the quality control of spiramycin-based pharmaceuticals.
• For pharmaceutical research and development into new antibiotic formulations and combination therapies.
• In the synthesis and purification of high-grade Active Pharmaceutical Ingredients (APIs) for human and veterinary medicine.
• As a key intermediate in process chemistry for scaling up antibiotic production.
• For microbiological studies investigating the efficacy and resistance mechanisms of macrolide antibiotics.
• Use in regulatory submissions and method validation requiring certified chemical standards.

Basic Information

Product Name	Spiramycin Iii
CAS No.	24916-52-7
Molecular Formula	C45H76N2O14
Molecular Weight	869.1 g/mol
Synonyms	Spiramycin III; Spiramycin C; Foromacidin C; Sequamycin; Rovamycin component C; Antibiotic 5337 component C; (4R,5S,6S,7R,9R,10R,11E,13E,16R)-6-{[(2R,3R,4S,6R)-4-(Dimethylamino)-6-methyloxan-2-yl]oxy}-10-{[(2R,5S,6S)-5-(Dimethylamino)-6-methyloxan-2-yl]oxy}-4-hydroxy-5-methoxy-9,16-dimethyl-7-(2-oxoethyl)-1-oxacyclohexadeca-11,13-diene-2,8-dione
EINECS	Contact for details

Quality Control

Our Spiramycin Iii is produced and tested under strict quality management systems to ensure it meets the high standards required for pharmaceutical research and development. Each batch is accompanied by a comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles. We support compliance with relevant pharmacopeial standards (e.g., USP, EP) and can provide material for regulatory filing purposes.

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 dry environment to prevent moisture absorption, which can affect stability and purity.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to reference spectrum
Identification (HPLC)	Retention time corresponds to reference standard
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Related Substances (HPLC)	Total impurities ≤ 3.0% Any single impurity ≤ 1.0%
Residual Solvents (GC)	Complies with ICH guidelines

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