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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 Categories

Anthelmintic agent


Ectoparasiticide, treatment of varroosis

Chemical Name

Phosphorotioic acid, O-(3-chloro-4-metyl-2-oxo-2H-1-benzopyran-7-yl) O,O-dietyl ester

Foreign Names

  • Coumafosum (Latin)
  • Coumafos (German)
  • Coumafos (French)
  • Cumafos (Spanish)

Generic Names

  • Coumafos (OS: BAN)
  • 7-Co-ral (IS)
  • Bayer 21/199 (IS)
  • Coumaphos (IS)
  • Cumafosum (IS)

Brand Names

  • CheckMite Plus Für Honigbienen (veterinary use)
    Provet, Switzerland
  • Co-Ral Plus (Coumafos and Dimpylate (veterinary use))
    Bayer Australia Ltd Animal Health, Australia
  • Meldane (veterinary use)
    Bayer Animal Health, United States
  • Perizin (veterinary use)
    Bayer, Germany; Provet, Switzerland
  • Purina (veterinary use)
    Purina Animal Nutrition, United States; Virbac AH, United States


BANBritish Approved Name
ISInofficial Synonym
OSOfficial Synonym
Rec.INNRecommended International Nonproprietary Name (World Health Organization)

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.