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CAS registry number (Chemical Abstracts Service)


Chemical Formula


Molecular Weight


Therapeutic Category

Muscarinic receptor antagonist (anticholinergic, parasympatholytic agent)

Chemical Name

4-(2-metyl-1H-imidazol-1-yl)-2,2-diphenylbutanamide (WHO)

Foreign Names

  • Imidafenacinum (Latin)
  • Imidafenacin (German)
  • Imidaf√©nacin (French)
  • Imidafenacina (Spanish)

Generic Names

  • Imidafenacin (OS: JAN)
  • KRP-197 (IS)
  • KRP-1979 (IS)
  • Ono-8025 (IS)

Brand Names

  • Staybla
    Ono Yakuhin, Japan
  • Staybla OD
    Ono Yakuhin, Japan
  • Uritos
    Chong Kun Dang, South Korea; Kyorin Pharmaceutical, Japan
  • Uritos OD
    Kyorin Pharmaceutical, Japan


ISInofficial Synonym
JANJapanese Accepted Name
OSOfficial Synonym
Rec.INNRecommended International Nonproprietary Name (World Health Organization)
WHOWorld 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

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