Also, found this:
"Androsta-1-ene-3b-ol,17-one is a prohormone that requires just two reactions to become its target substance. Enzymes known as 17b-hydroxysteroid dehydrogenase and 3b-hydroxysteroid dehydrogenase act upon this molecule to make efficient amounts of 1-testosterone. That particular target substance can last in the body up to two hours and is a derivative of dihydrotestosterone (DHT), however it cannot become DHT directly. That makes this extremely active on the androgen receptor, probably giving 1-testosterone its reputation for being 700% more anabolic than testosterone.
It also cannot aromatize whatsoever and is even a competitive inhibitor of the aromatase enzyme. This means that the gains made will be very lean due to the lack of water retention, but you can expect immense strength, hard, dense muscle mass, and an awesome boost in metabolism"
^^^ I cannot vouch for this. Just some searchin' on the interwebz, bro.
