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CAS registry number (Chemical Abstracts Service)


Chemical Formula


Molecular Weight


Therapeutic Categories

5-Alpha reductase inhibitor

Treatment of benign prostatic hyperplasia

Chemical Names

17β-(tert-Butylcarbamoyl)androsta-3,5-diene-3-carboxylic acid (WHO, BAN, JAN)

Androsta-3,5-diene-3-carboxylic acid, 17-[[(1,1-dimetyletyl)amino]carbonyl]-, (17β)- (USAN)

Foreign Names

  • Epristeridum (Latin)
  • Epristerid (German)
  • Épristéride (French)
  • Epristerida (Spanish)

Generic Names

  • Epristeride (OS: BAN, USAN, JAN)
  • ONO 9302 (IS)
  • SK&F 105657 (IS)
  • UNII-39517A04PS (IS)

Brand Name


BANBritish Approved Name
ISInofficial Synonym
JANJapanese Accepted Name
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

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