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CAS registry number (Chemical Abstracts Service)


Chemical Formula


Molecular Weight


Therapeutic Categories

Inhibitor of nicotinic acid-induced flushing

Selective prostaglandin D2 receptor 1 antagonist (DP1 receptor antagonist)

Chemical Names

[(3R)-4-[(4-Chlorophenyl)metyl]-7-fluoro-5-(metanesulfonyl)-1,2,3,4-tetrahydrocyclopenta[b]indol-3-yl]acetic acid (WHO)

Cyclopent[b]indole-3-acetic acid, 4-[(4-chlorophenyl)metyl]-7-fluoro-1,2,3,4-tetrahydro-5-(metylsulfonyl)-, (3R)- (USAN)

Foreign Names

  • Laropiprantum (Latin)
  • Laropiprant (German)
  • Laropiprant (French)
  • Laropiprant (Spanish)

Generic Names

  • Laropiprant (OS: USAN, BAN)
  • MK-0524 (IS)
  • UNII-G7N11T8O78 (IS)

Brand Names

  • Cordaptive (Laropiprant and Nicotinic Acid)
    Merck Sharp & Dohme, Colombia; Merck Sharp & Dohme, Ecuador; MSD, Argentina; MSD, Peru
  • Pelzont (Laropiprant and Nicotinic Acid)
    Merck Sharp & Dohme, Lithuania; MSD, Netherlands
  • Tredaptive (Laropiprant and Nicotinic Acid)
    Merck Sharp & Dohme, Czech Republic; Merck Sharp & Dohme, Iceland; Merck Sharp & Dohme, Serbia; MSD, South Africa
  • Trevaclyn (Laropiprant and Nicotinic Acid)
    Merck Sharp & Dohme, Italy; Merck Sharp & Dohme, Lithuania; Merck Sharp & Dohme, Serbia; MSD, Netherlands

International Drug Name Search


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

Click for further information on drug naming conventions and 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.