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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, 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, Serbia; MSD, South Africa
  • Trevaclyn (Laropiprant and Nicotinic Acid)
    Merck Sharp & Dohme, Lithuania; Merck Sharp & Dohme, Serbia; MSD, Netherlands


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.

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