(3R,5S,8R,9S,10R,13S,14S)-3-((tert-Butyldimethylsilyl)oxy)-10,13-dimethyl-5,6,7,8,9,10,11,12,13,14,15,16-dodecahydro-3H-cyclopenta[a]phenanthren-17(4H)-one is the intermediate in the synthesis of 1-Dehydro Epiandrosterone (D229575), which is an Androsterone metabolite. Suitable for the detection of steroid abuse screenings.