🛠️ Invention or technique

Synthesis of norethisterone

Síntesis de la noretisterona

Date
15 de octubre de 1951 · confidence high
Place
Syntex, Mexico City, Mexico
Credited to
Luis E. Miramontes, Carl Djerassi and George Rosenkranz
People
👤 Carl Djerassi1923–2015👤 George Rosenkranz1916–2019👤 Luis Ernesto Miramontes Cárdenas1925–2004
Field
Matter & energy

What it is

Miramontes synthesised norethisterone, the first orally active progestogen, the basis of one of the earliest contraceptive pills. It ranks among the most influential Mexican patents.

Enovid, launched in 1960, used norethynodrel (Searle, Colton); Syntex's norethisterone reached the contraceptive market shortly afterwards.

What it led to

  • the contraceptive pill (Ortho-Novum, 1962)
  • hormonal gynaecological treatments
  • the demographic and social revolution of birth control
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