Nomegestrol acetate58652-20-3100 % similar Nomegestrol58691-88-671 % similar Megestrol acetate595-33-568 % similar Chlormadinone acetate302-22-759 % similar 17-Acetoxyisopregn-4-ene-3,20-dione17308-02-058 % similar Progesterone acetate302-23-858 % similar Medroxyprogesterone acetate71-58-955 % similar Cyproterone acetate427-51-049 % similar Melengestrol acetate2919-66-647 % similar Medrogestone977-79-747 % similar Nestorone7759-35-547 % similar Megestrol3562-63-846 % similar Fluorogestone acetate2529-45-546 % similar Norethisterone acetate51-98-945 % similar Gestonorone2137-18-044 % similar Ulipristal acetate126784-99-444 % similar Hydroxyprogesterone caproate630-56-843 % similar Methyl (17α,20E)-17,20-[(1-methoxyethylidene)bis(oxy)]-3-oxo-19-norpregna-4,20-diene-21-carboxylate1370003-76-139 % similar 17β-Hydroxyprogesterone604-09-138 % similar 17α-Hydroxyprogesterone68-96-238 % similar