1-Testosterone Overview： 1-Testosterone (CAS No.: 65-06-5) is more of a mild hormone that will give you cleaner gains and dramatic strength increases. There are three prohormones to this compound:1-androstènedione, 1-androstenediol and 1-Androsterone aka 1-androstene-3b-ol-17-one. 1-Testosterone has a structure similar to testosterone but the double bond is in a different place. 1-Testosterone is a 1,2-double bond instead of a 4,5-double bond …