CAS : 797-63-7
Molecular Formula : C21H28O2
Formula Weight : 312.45
Levonorgestrel (or l-norgestrel or D-norgestrel) is a synthetic progestogen used as an active ingredient in some hormonal contraceptives.
At low doses, levonorgestrel is used in monophasic and triphasic formulations of combined oral contraceptive pills, with available monophasic doses ranging from 100-250 µg, and triphasic doses of 50 µg/75 µg/125 µg.At very low daily dose of 30 µg, levonorgestrel is used in some progestogen only pill formulations.Levonorgestrel is the active ingredient in the Mirena intrauterine system.
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