Synonyms: 18,19-Dinorprogesterone;BRN 3211678;18,19-Dinorpregn-4-ene-3,20-dione;AC1L44PD;2299-98-1;LS-62075;4-07-00-02379 (Beilstein Handbook Reference);(8S,9S,10R,13S,14S,17S)-17-acetyl-1,2,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydrocyclopenta[a]phenanthren-3-one