1,3,5(10)-Estratrien-3-ol-17-one English Synonyms: (8R,13S)-3- ... ,16-decahydro-cyclopenta[a]phenanthren-17-one;1,3,5(10)-Oestratrien-3-ol-17-one;1,3,5-Oestratrien-3 ... -one;3-Hydroxy-1,3,5-(10)-oestratrien-17-one;3-Hydroxy-1,3,5(10)-oestratrien-17-one;3-hydroxy-17 ... :270.37 Quality Standard: USP31 Packing:foil bag Usage: Synthesis of pharmaceutical intermediates is ethinyl estradiol