Description

Fenbendazole CAS NO 43210-67-9 is a broad-spectrum benzimidazole anthelmintic agent widely recognized for its efficacy against parasitic worms. It is a critical active pharmaceutical ingredient (API) essential for formulating veterinary and, in specific contexts, research-grade antiparasitic medications. This compound is primarily required by manufacturers in the animal health pharmaceutical industry, as well as by research institutions and laboratories focused on parasitology and drug development.

Application

• Veterinary Pharmaceutical Formulations: Primary use as an active ingredient in anthelmintic pastes, granules, suspensions, and feed additives for livestock (cattle, sheep, goats, pigs) and companion animals (dogs, horses).
• Aquaculture Health Management: Used in the treatment and control of internal parasitic infections in farmed fish and other aquatic species.
• Poultry Industry: Administration for the control of gastrointestinal helminths (e.g., Ascaridia, Heterakis) in poultry flocks.
• Research & Development: Serves as a reference standard, biochemical tool, and key intermediate in pharmacological and parasitological research studies.
• Zoological and Wildlife Medicine: Employed in treatment protocols for parasitic infections in captive and wild animals within zoos and conservation programs.

Basic Information

Product Name	Fenbendazole
CAS No.	43210-67-9
Molecular Formula	C15H13N3O2S
Molecular Weight	299.35 g/mol
Synonyms	Fenbendazole; Methyl N-(6-phenylsulfanyl-1H-benzimidazol-2-yl)carbamate; Panacur; [5-(Phenylthio)-1H-benzimidazol-2-yl]carbamic acid methyl ester; Fenben; FBZ; R 17635; HOE 881V; NSC 305829
EINECS	256-143-9

Quality Control

Our Fenbendazole is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing to ensure it meets high-purity standards suitable for pharmaceutical applications. A detailed Certificate of Analysis (COA) is provided with every shipment, confirming specifications for identity, purity, and related substances. We can supply material compliant with various pharmacopeial monographs upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). Keep away from incompatible materials and sources of ignition.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms
Identification (HPLC)	Conforms
Assay (HPLC)	98.0% - 102.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Loss on Drying	≤ 0.5%
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.