Description

Acetylspiramycin is a semi-synthetic derivative of the macrolide antibiotic spiramycin, characterized by its enhanced stability and bioavailability. This compound is a critical active pharmaceutical ingredient (API) valued for its efficacy against a broad spectrum of Gram-positive bacteria and certain intracellular pathogens. It is primarily utilized in the pharmaceutical industry for the formulation of human and veterinary antibiotic preparations, targeting respiratory and soft tissue infections. Our supply of Acetylspiramycin CAS NO 24916-51-6 ensures high purity and reliable consistency for demanding manufacturing processes.

Application

• Primary Active Pharmaceutical Ingredient (API) in human oral antibiotic formulations.
• Key component in veterinary medicinal products for treating bacterial infections in livestock and companion animals.
• Intermediate in the research and synthesis of novel macrolide antibiotic derivatives.
• Raw material for the preparation of topical antibiotic creams and ointments.
• Reference standard in pharmaceutical quality control and analytical laboratories.
• Use in clinical research studies involving antimicrobial resistance and efficacy.

Basic Information

Product Name	Acetylspiramycin
CAS No.	24916-51-6
Molecular Formula	C45H76N2O15
Molecular Weight	885.1 g/mol
Synonyms	Acetylspiramycin; Spiramycin II acetate; Foromacidin B; 4''-O-Acetylspiramycin; Spiramycin acetate; NSC 169502; Antibiotic A-649; Antibiotic U-4527
EINECS	Contact for details

Quality Control

Our Acetylspiramycin is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing to ensure it meets high-purity standards suitable for pharmaceutical applications. We provide full traceability and support with regulatory documentation. Certificates of Analysis (COA) are available upon request, detailing purity, identity, and impurity profiles.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and light-sensitive; therefore, containers must be kept sealed and away from direct light and moisture 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)	≤ 5.0%
Residue on Ignition	≤ 1.0%
Related Substances (HPLC)	Total impurities ≤ 3.0%
Specific Rotation	Contact for details
Heavy Metals	≤ 20 ppm

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