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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


Chemical Name

Pregn-4-ene-3,20-dione, 9-fluoro-11,17-dihydroxy-, (11β)-

Foreign Names

  • Flugestonum (Latin)
  • Flugeston (German)
  • Flugestone (French)
  • Flugestona (Spanish)

Generic Names

Brand Names

  • Chrono Gest (veterinary use)
    Intervet, Netherlands
  • Chronogest (veterinary use)
    Intervet, United Kingdom; Intervet Ireland, Ireland; MSD Animal Health, Australia; MSD Santé Animale Intervet, France
  • Crono-Gest (veterinary use)
    Intervet, Italy
  • Ova-Gest (veterinary use)
    Bioniche Animal Health, Australia; Bioniche Animal Health, Israel
  • Ovakron (veterinary use)
    AniPharm, South Africa
  • Syncro Part (veterinary use)
    Ceva Santé Animale, France
  • Syncropart (veterinary use)
    Ceva-Phylaxia, Israel


BANBritish Approved Name
BANMBritish Approved Name (Modified)
DCITDenominazione Comune Italiana
ISInofficial Synonym
OSOfficial Synonym
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.