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In some countries, this medicine may only be approved for veterinary use.



CAS registry number (Chemical Abstracts Service)


Chemical Formula


Molecular Weight


Therapeutic Category

Antibacterial: Sulfonamide

Chemical Names





Benzenesulfonamide, 4-amino-N-(6-chloro-3-pyridazinyl)-

N¹-(6-Chloro-3-pyridazinyl)sulfanilamide (USAN)

Foreign Names

  • Sulfachlorpyridazinum (Latin)
  • Sulfachlorpyridazin (German)
  • Sulfachlorpyridazine (French)
  • Sulfaclorpiridazina (Spanish)

Generic Names

  • Sulfachloropyridazine (OS: BAN, DCF)
  • Ba-10370 (IS)
  • Ciba 10370 (IS)
  • Cluricol (IS)
  • Sulphachlorpyridazine (IS)
  • Sulfachlorpyridazine (PH: USP 38)
  • Sulfachlorpyridazine Sodium (OS: BAN)
  • Coccidiox (IS)
  • Cordixina (IS)
  • Esb₃ (IS)
  • Esbetre (IS)
  • Esbetrin (IS)
  • Sulfaclozine sodium (IS)
  • Sulfatyf sodium (IS)

Brand Names

  • Prinzone (veterinary use)
    Boehringer Ingelheim Vetmedica, United States
  • Pyradan (veterinary use)
    Boehringer Ingelheim Vetmedica, United States
  • S.C.P. (veterinary use)
    Teva, Israel
  • Vetisulid (veterinary use)
    Boehringer Ingelheim Vetmedica, United States
  • BS Poeder (veterinary use)
    Belgica de Weerd, Netherlands
  • Coliprim (Sulfachlorpyridazine and Trimethoprim (veterinary use))
    Phibro Animal Health, South Africa; Teva, Israel
  • Cosumix (Sulfachlorpyridazine and Trimethoprim (veterinary use))
    Novartis Animal Health, Netherlands; Novartis Animal Health, South Africa; Novartis Tiergesundheit, Switzerland
  • Cosumix Plus (Sulfachlorpyridazine and Trimethoprim (veterinary use))
    V.M.D, Belgium
  • S.C.P. (veterinary use)
    Galpharma, Israel


BANBritish Approved Name
DCFDénomination Commune Française
ISInofficial Synonym
OSOfficial Synonym
PHPharmacopoeia Name
Rec.INNRecommended International Nonproprietary Name (World Health Organization)
USANUnited States Adopted Name

Further information on drug naming conventions: International Nonproprietary Names.

Important Notice: The international database is in BETA release. This means it is still under development and may contain inaccuracies. It is not intended as a substitute for the expertise and judgement of your physician, pharmacist or other healthcare professional. It should not be construed to indicate that the use of any medication in any country is safe, appropriate or effective for you. Consult with your healthcare professional before taking any medication.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.