APIs
(current)
Estrogens
Estradiol
Estradiol Cypionate
Estradiol Valerate
Ethinyl Estradiol
Mestranol
Quinestrol
Progestins
Chlormadinone Acetate
Cyproterone Acetate
Desogestrel
Dienogest
Drospirenone
Ethynodiol Diacetate
Etonogestrel
Gestodene
Levonorgestrel
Lynestrenol
Medroxyprogesterone Acetate
Megestrol Acetate
Nestorone
Nomegestrol Acetate
Norelgestromin
Norethindrone
Norethindrone Acetate
Norethindrone Enanthate
Norethynodrel
Norgestimate
Norgestrel
SPRMs
Ulipristal Acetate
SERMs
Ormeloxifene
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APIs
Quinestrol
Metabolites
Quinestrol Metabolites
Name
Structure
Notes
Cyclopentanol
Ethinyl Estradiol
Primary metabolite of mestranol and quinestrol. Also a minor metabolite of norethindrone (0.7 and 1.0% of norethindrone converted to ethinyl estradiol at doses of 5 and 10 mg, respectively).