(8R,9S,10R,13S,14S,17S)-17-hydroxy-13-methyl-2,6,7,8,9,10,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-one; 17ß-Hydroxyestra-4-en-3-one; Nortestosterone; Estr-4-en-3-one, 17ß-hydroxy; 17ß-Hydroxy-19-nor-4-androsten-3-one; 17ß-Hydroxyestr-4-en-3-one; 19-Norandrostenolone; 19-Nortestosterone; 4-Estrene-17ß-ol-3-one; Norandrostenolon; Nortestonate