Description

Tulathromycin B is a key semi-synthetic macrolide antibiotic belonging to the triamilide subclass. This compound is a primary intermediate in the synthesis of the final veterinary antibiotic, Tulathromycin, which is valued for its broad-spectrum activity and long-acting efficacy. It is essential for manufacturers in the animal health and pharmaceutical industries developing treatments for respiratory diseases in livestock. The material is supplied as a high-purity intermediate to ensure the quality and consistency of the final active pharmaceutical ingredient (API).

Application

• Primary Intermediate for the synthesis of the veterinary antibiotic Tulathromycin (Draxxin®).
• Active Pharmaceutical Ingredient (API) Manufacturing for the animal health sector.
• Veterinary Pharmaceutical Research & Development for new formulations and combination therapies.
• Reference Standard for quality control and analytical method development in QC laboratories.
• Bulk Pharmaceutical Chemical production for global animal health supply chains.

Basic Information

Product Name	Tulathromycin B
CAS No.	280755-12-6
Molecular Formula	C41H79N3O12
Molecular Weight	806.08 g/mol
Synonyms	(2R,3S,4R,5R,8R,10R,11R,12S,13S,14R)-13-[[(2R,3S,4R,5R)-5-(Dimethylamino)-3,4-dihydroxyoxan-2-yl]oxy]-2-ethyl-3,4,10-trihydroxy-3,5,8,10,12,14-hexamethyl-11-[[(2R,3R,4R,5R,6R)-3,4,5-trihydroxy-6-methyloxan-2-yl]oxy]-1-oxa-6-azacyclopentadecan-15-one; CP-472295; Tulathromycin Impurity B; Draxxin Intermediate B
EINECS	Contact for details

Quality Control

Our Tulathromycin B is manufactured under strict quality management systems. Each batch is tested to ensure it meets high-purity standards suitable for pharmaceutical synthesis. A comprehensive Certificate of Analysis (COA) is provided, detailing results for identity, purity, assay, and related substances via validated methods such as HPLC. We support compliance with cGMP and relevant veterinary pharmacopoeia standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and must be kept in a dry environment to prevent degradation. For long-term storage, consider desiccants or inert atmosphere.

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)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0% Any single impurity ≤ 1.0%
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.1%

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