Description

Leucomycin A5 CAS NO 18361-45-0 is a macrolide antibiotic belonging to the leucomycin complex, valued for its potent antibacterial activity against Gram-positive bacteria and certain mycoplasmas. Its primary commercial significance lies in its application as a key intermediate in the synthesis of advanced veterinary and pharmaceutical antibiotics. This product is essential for manufacturers in the animal health, pharmaceutical research, and fine chemical synthesis sectors requiring a high-purity, reliable building block.

Application

• Veterinary Pharmaceutical Intermediate: A critical starting material for the synthesis of antibiotics used in livestock and poultry to combat respiratory and enteric infections.
• Research & Development: Used in microbiological research and as a reference standard in analytical laboratories for method development and quality control.
• Active Pharmaceutical Ingredient (API) Synthesis: Serves as a precursor in the multi-step synthesis of more complex macrolide antibiotic APIs.
• Microbiological Media & Assays: Employed in selective culture media and in vitro susceptibility testing to study bacterial resistance patterns.

Basic Information

Product Name	Leucomycin A5
CAS No.	18361-45-0
Molecular Formula	C41H67NO15
Molecular Weight	813.97 g/mol
Synonyms	Kitasamycin A5; Leucomycin V; Ayermycin; Stereomycin; Antibiotic T 2636 C; (3R,4S,5S,6R,7R,9R,11R,12R,13S,14R)-4-[(2,6-Dideoxy-3-C-methyl-3-O-methyl-α-L-ribo-hexopyranosyl)oxy]-14-ethyl-12,13-dihydroxy-7-[(2,6-dideoxy-3-C-methyl-3-O-methyl-α-L-ribo-hexopyranosyl)oxy]-3,5,7,9,11,13-hexamethyl-6-[[3,4,6-trideoxy-3-(dimethylamino)-β-D-xylo-hexopyranosyl]oxy]oxacyclotetradecane-2,10-dione
EINECS	242-215-8

Quality Control

Our Leucomycin A5 is manufactured under strict quality management systems. Each batch is tested to ensure high purity and consistency, with specifications aligned with industry standards for fine chemical intermediates. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to support your quality assurance protocols.

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). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which can affect stability and potency.

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%
Residue on Ignition	≤ 1.0%
Related Substances (HPLC)	Total impurities ≤ 3.0% Any single impurity ≤ 1.0%

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