Synonyms: Pregn-4-ene-3,20-dione,16,17-[(1-phenylethylidene)bis(oxy)]-, [16a(R)]-;2H-Naphth[1',2':6,7]indeno[1,2-d][1,3]dioxole,pregn-4-ene-3,20-dione deriv.;Alphasone acetophenide;Deladroxone;Dihydroxyprogesterone acetophenide;Droxone;Neolutin Depositum;P-DHP;ZK 9349;