The chemical Ulipristal acetate has a known molecular formula of C30-H37-N-O4. Synonyms may include: 17-Acetoxy-11-(4-N,N-dimethylaminophenyl)pregna-4,9-diene-3,20-dione, (11beta)-17-(Acetyloxy)-11-(4-(dimethylamino)phenyl)-19-norpregna-4,9-diene-3,20-dione, HRP-2000, CDB 2914, RTI 3021-012, VA 2914, HRP 2000, RU 44675, EllaOne, UNII-YF7V70N02B, CBD 2914, Ella (ChemID).