Androstatriendione and Prohormones – Steroids 2066 Description Androstatriendione, 17-dione (ATD, androsta-1,4,6-triene-3,17-dione) is a potent irreversible and aromatase inhibitor that blocks the biosynthesis of estrogen by constantly binding and deactivating aromatase in adipose and Peripheral tissue. It is used to control the synthesis of estrogen. ATD was present in some over the counter bodybuilding supplements as well as topical ATD solutions that
