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Nitazoxanide

December 17, 2025

Pharmacopoeial Name: Nitazoxanide
Chemical Name: 2-(acetolyloxy)-n-(5-nitro-2-thiazolyl)benzamide
CAS No.: [55981-09-4]

  • Description
    Nitazoxanide (CAS 55981-09-4) is a broad-spectrum antiparasitic and antiviral API used in human and veterinary medicine
  • Product Specifications
    Product name Nitazoxanide
    CAS NO. 55981-09-4
    Loss on drying 0.5%
    Related substances(HPLC) Impurity A≤0.1%
    Aspirin ≤0.1%
    Impurity B≤1.0%
    Unspecified impurity≤0.10%
    Total impurities≤1.0%
  • Product Characteristics

    Product name Nitazoxanide
    CAS NO. 55981-09-4
    Appearance White to Pale yellow powder
    Purity 98%+
    MF C12H9N3O5S
    MW 307.28
    Related categories API/Pharmaceutical Grade
    HS Code 2942000000
  • Applications

    Nitazoxanide is a broad-spectrum antiparasitic and antiviral agent with the following primary applications:

    • Human Medicine: Used as an anthelmintic and antiprotozoal medication for the treatment of diarrhea caused by Cryptosporidium parvum and Giardia lamblia in adults and children. It also has demonstrated activity against other intestinal parasites and certain anaerobic bacteria.

    • Veterinary Medicine: Employed in livestock and companion animals for the control of a wide range of gastrointestinal parasites.

    • Antiviral Research: Investigated for its potential activity against various viruses, including influenza and rotavirus, due to its mechanism of inhibiting viral replication.

    • Pharmaceutical Intermediate: Serves as a key active pharmaceutical ingredient (API) in the formulation of tablets, oral suspensions, and other dosage forms.

  • Packaging
  • Store in a cool, dry, and well-ventilated place.

  • Keep the container tightly closed and protected from light and moisture to prevent degradation.

  • Recommended long-term storage temperature: 2-8°C (refrigerated). For short-term or in-use storage, keep below 25°C in a dry environment.

  • Incompatible with strong oxidizing agents.

  • Store according to the guidelines for pharmaceutical active ingredients.

Samples and further technical data can be provided upon request.
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