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



ATC (Anatomical Therapeutic Chemical Classification)


CAS registry number (Chemical Abstracts Service)


Chemical Formula


Molecular Weight


Therapeutic Categories

Inhibitor of 3β-hydroxysteroid dehydrogenase

Inhibitor of the adrenocortical corticosteroid synthesis

Chemical Name

Androst-2-ene-2-carbonitrile, 4,5-epoxy-3,17-dihydroxy-, (4α,5α,17β)-

Foreign Names

  • Trilostanum (Latin)
  • Trilostan (German)
  • Trilostane (French)
  • Trilostano (Spanish)

Generic Names

  • Trilostane (OS: DCF, USAN, BAN, JAN)
  • Win 24540 (IS: Winthrop)

Brand Names

  • Desopan
    Mochida Pharmaceutical, Japan
  • Vetoryl (veterinary use)
    Albrecht, Germany; Dechra, Austria; Dechra, Finland; Dechra, Ireland; Dechra, Netherlands; Dechra, Norway; Dechra, Poland; Dechra, Sweden; Dechra, United States; Dechra Veterinary Products, Belgium; Dechra Veterinary Products, France; Dechra Veterinary Products, United Kingdom; Dermcare-Vet, Australia; MSD Animal Health, Switzerland; RxVet, New Zealand; Selecta, Germany


BANBritish Approved Name
DCFDénomination Commune Française
ISInofficial Synonym
JANJapanese Accepted Name
OSOfficial Synonym
Prop.INNProposed 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.