About Levonorgestrel
About Levonorgestrel
About Mirena
About (+)-D-Norgestrel
About (+)-Norgestrel
About 18-Methylnorethindrone
About oral contraceptive
About contraceptive agent
About drug for genitalia
About corpus luteum hormone
About alicyclic ketone
About acetylenic compound
About unsaturated alcohol
About enone