1. APIs
  2. Mestranol
  4. Ethinyl Estradiol
  1. APIs
  2. Norethindrone
  3. Metabolites
  4. Ethinyl Estradiol
  1. APIs
  2. Quinestrol
  3. Metabolites
  4. Ethinyl Estradiol

Ethinyl Estradiol

Structure

CASRN

57-63-6

Notes

Primary metabolite of mestranol and quinestrol. Also a minor metabolite of norethindrone (0.7 and 1.0% of norethindrone converted to ethinyl estradiol at doses of 5 and 10 mg, respectively).

References

  1. Human Metabolome Database: 17alpha-ethinyl estradiol. (View all citations for this reference)
  2. WHO International Agency for Research on Cancer: IARC Monographs on the Evaluation of Carcinogenic Risks to Humans. Volume 91: Combined Estrogen-Progestogen Contraceptives and Combined Estrogen-Progestogen Menopausal Therapy. 2007, Lyon, France. (View all citations for this reference)