<unk> , sold under the brand name Synestrol among others, is a nonsteroidal estrogen which was previously used for estrogen replacement therapy and in the treatment of certain hormone-dependent cancers as well as gynecological disorders but is mostly no longer marketed. It has also been used in the form of esters such as<unk>  diacetate (brand name Sintestrol) and<unk>  dipropionate (brand name Hexanoestrol).<unk>  and its esters are taken by mouth, held under the tongue, or via injection into muscle.
Hexestrol
Gestodene
Fosfestrol
Moxestrol
Dimestrol
Benzestrol
Dienestrol
Allenestrol