1. APIs
  2. Desogestrel
  3. Impurities
  4. 11-Methylene Lynestrenol

11-Methylene Lynestrenol

Structure

Other Names & Identifiers

  • BP Desogestrel Impurity B
  • 11-methylene-19-nor-17α-pregn-4-en-20-yn-17-ol

Limits

0.2%

References

  1. BP 2017 Desogestrel monograph.
    2. (View all citations for this reference)
  2. US Pharmacopoeia 40 (2017): Desogestrel monograph.
    3. (View all citations for this reference)
  3. US Pharmacopoeia 40 (2017): Levonorgestrel.
    4. (View all citations for this reference)
  4. 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)