Description

Oxfendazole CAS NO 53716-50-0 is a broad-spectrum benzimidazole anthelmintic agent. It is a critical active pharmaceutical ingredient (API) valued for its potent efficacy against a wide range of parasitic nematodes in veterinary medicine. This compound is essential for manufacturers of veterinary pharmaceuticals, particularly those producing drenches, pastes, and feed additives for livestock, including cattle, sheep, and swine, to ensure animal health and productivity.

Application

• Primary use as an anthelmintic API in veterinary pharmaceutical formulations.
• Manufacturing of oral drenches and suspensions for livestock deworming.
• Key ingredient in medicated feed additives and pellets for herd health management.
• Production of topical pastes and gels for equine and small ruminant care.
• Used in combination anthelmintic products to combat parasite resistance.
• Active component in sustained-release bolus systems for cattle.
• Intermediate in the synthesis of other benzimidazole-class veterinary drugs.
• Research and development of novel parasiticidal applications.

Basic Information

Product Name	Oxfendazole
CAS No.	53716-50-0
Molecular Formula	C15H13N3O3S
Molecular Weight	315.35 g/mol
Synonyms	Oxfendazole; Fenbendazole S-oxide; Systamex; RS-8858; Methyl [5-(phenylsulfinyl)-1H-benzimidazol-2-yl]carbamate; 5-Phenylsulfinyl-2-benzimidazolecarbamic acid methyl ester; (5-Phenylsulfinyl-1H-benzimidazol-2-yl)carbamic acid methyl ester
EINECS	258-689-7

Quality Control

Our Oxfendazole is manufactured under strict quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC for assay and impurity profiling, to ensure it meets high-purity standards suitable for pharmaceutical use. A Certificate of Analysis (COA) detailing identity, purity, and related substances is provided with each shipment, confirming compliance with relevant specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	White or almost white powder
Identification (IR)	Conforms to reference standard
Identification (HPLC)	Retention time corresponds to reference
Assay (HPLC)	98.0% - 102.0% (on anhydrous basis)
Related Substances (HPLC)	Total impurities ≤ 2.0% Any single impurity ≤ 0.5%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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