Description

Neospiramycin I CAS NO 70253-62-2 is a potent macrolide antibiotic belonging to the spiramycin family, valued for its broad-spectrum activity against Gram-positive bacteria and certain anaerobes. This compound is critical for research and development in the pharmaceutical sector, particularly in the study of novel antibacterial agents and resistance mechanisms. It serves the needs of pharmaceutical R&D laboratories, academic research institutions, and manufacturers of active pharmaceutical ingredients (APIs) and reference standards.

Application

• As a key reference standard for analytical method development and quality control in pharmaceutical manufacturing.
• For antibacterial research in academic and industrial settings, studying mechanisms of action and resistance.
• In the development and synthesis of novel macrolide antibiotic derivatives with improved efficacy or safety profiles.
• As a critical starting material or intermediate in the production of veterinary pharmaceutical products.
• Utilized in microbiological assays to determine the potency of antibiotic preparations.
• For stability studies and impurity profiling of spiramycin-related pharmaceutical formulations.

Basic Information

Product Name	Neospiramycin I
CAS No.	70253-62-2
Molecular Formula	C45H76N2O14
Molecular Weight	869.1 g/mol
Synonyms	Neospiramycin I; 4''-O-Acetylspiramycin I; Foromacidin D; Antibiotic U-59,208; Spiramycin II Acetate; (4''R)-4''-O-Acetylspiramycin I; 4''-O-Acetyl-9-deoxo-9a-aza-9a-homoerythromycin A
EINECS	Contact for details

Quality Control

Our Neospiramycin I is produced and tested under strict quality management systems to ensure high purity and batch-to-batch consistency, suitable for research and development applications. Each batch is accompanied by a comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles. We adhere to relevant industry guidelines for analytical reference materials.

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 (HPLC)	Conforms to reference standard
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Related Substances (HPLC)	Total impurities ≤ 5.0% Any single impurity ≤ 2.0%

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