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CAS registry number (Chemical Abstracts Service)


Chemical Formula


Molecular Weight


Therapeutic Category


Chemical Name

19-Norpregna-1,3,5(10)-trien-20-yn-17-ol, 3-metoxy-, (17α)-

Foreign Names

  • Mestranolum (Latin)
  • Mestranol (German)
  • Mestranol (French)
  • Mestranol (Spanish)

Generic Names

  • Mestranol (OS: USAN, DCF, BAN, JAN)
  • Mestranolo (OS: DCIT)
  • CB 8027 (IS)
  • EEME (IS)
  • Mestranol (PH: BP 2016, JP XVI, Ph. Eur. 8, USP 38)
  • Mestranolo (PH: Ph. Eur. 8)
  • Mestranolum (PH: Ph. Eur. 8)

Brand Names

  • Anovulatorios L.CH. (Mestranol and Lynestrenol)
    Laboratorio Chile, Chile
  • Lutedion (Mestranol and Chlormadinone)
    ASKA Seiyaku Asuka, Japan
  • Necon 1/50-21 (Mestranol and Norethisterone)
    Actavis, United States
  • Necon 1/50-28 (Mestranol and Norethisterone)
    Actavis, United States
  • Norinyl 1+50 28-Day (Mestranol and Norethisterone)
    Actavis, United States
  • Norinyl-1 (Mestranol and Norethisterone)
    Pfizer, Australia; Pfizer, United Kingdom; Pfizer, South Africa
  • Ortho-Novum 1/50 28 (Mestranol and Norethisterone)
    Janssen Pharma, United States
  • Sophia A (Mestranol and Norethisterone)
    ASKA Seiyaku Asuka, Japan
  • Sophia C (Mestranol and Norethisterone)
    ASKA Seiyaku Asuka, Japan


BANBritish Approved Name
DCFDénomination Commune Française
DCITDenominazione Comune Italiana
ISInofficial Synonym
JANJapanese Accepted Name
OSOfficial Synonym
PHPharmacopoeia Name
Rec.INNRecommended International Nonproprietary Name (World Health Organization)
USANUnited States Adopted Name

Further information on drug naming conventions: International Nonproprietary Names.

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Further information

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