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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 2018, JP XVII, Ph. Eur. 9, USP 41)
  • Mestranolo (PH: Ph. Eur. 9)
  • Mestranolum (PH: Ph. Eur. 9)

Brand Names

  • Anamai [+ Norethisterone]
    Thai Nakorn Patana, Thailand
  • Anovulatorios L.CH. [+ Lynestrenol]
    Laboratorio Chile, Chile
  • Lutedion [+ Chlormadinone]
    ASKA Seiyaku Asuka, Japan
  • Norinyl [+ Norethisterone]
    Pfizer, Mexico
  • Norinyl 1+50 28-Day [+ Norethisterone]
    Actavis, United States
  • Norinyl-1 [+ Norethisterone]
    Pfizer, United Kingdom; Pfizer, South Africa
  • Norinyl-1 28 Day [+ Norethisterone]
    Pfizer, Australia
  • Ortho-Novum [+ Norethisterone]
    Janssen-Cilag, Mexico
  • Secuentex [+ Chlormadinone]
    Pfizer, Mexico
  • Sophia A [+ Norethisterone]
    ASKA Seiyaku Asuka, Japan
  • Sophia C [+ 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.

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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