英文别名3,20-BIS(ETHYLENEDIOXY)-19-NORPREGNA-5(10)9(11)DIEN-17-OL; 3,20-Bis(ethylenedioxy)-19-norpregna-5(10),9(11)-dien-17-ol; 17-Hydroxy-19-norpregna-5(10),9(11)-diene-3,20-dione cyclic bis(1,2-ethanediyl acetal); 3,3,20,20-Bis(ethylene-dioxy)-17α-hydroxy-19-norpregna-5(10),9(11)-diene; Ulipristal Impurity 13; (8S,13S,14S,17R)-13-Methyl-17-(2-methyl-1,3-dioxolan-2-yl)-1,2,4,6,7,8,12,13,14,15,16,17-dodecahydrospiro[cyclopenta[a]phenanthrene-3,2'-[1,3]dioxolan]-17-ol