1. APIs
  2. Levonorgestrel
  3. Metabolites
  4. 3β,5β-tetrahydrolevonorgestrel

3β,5β-tetrahydrolevonorgestrel

Structure

Source

Reduction of C3 ketone to a hydroxyl and reduction of C4-C5 double bond.

Notes

Minor metabolite. Also present as a sulfate conjugate.

References

  1. Stanczyk FZ. All progestins are not created equal. Steroids. 2003; 68:879-90.
    2. (View all citations for this reference)
  2. Stanczyk FZR, S. Metabolism of levonorgestrel, norethindrone, and structurally related contraceptive steroids. 1990; 42:67-96.
    3. (View all citations for this reference)
  3. Online free access database provided by the United States National Institutes of Health (NIH). (View all citations for this reference)