(CAS NO.: ), with its systematic name of 11beta-(p-(Dimethylamino)phenyl)-17beta-hydroxy-17-(1-propynyl)estra-4,9-dien-3-one, could be produced through many synthetic methods.

Following is one of the synthesis routes:
3,3-(Ethylenedioxy)estra-5(10),9(11)-diene-17(beta)-one (I) could react with propynylmagnesium bromine (II) in the presence of THF to produce 3,3-(ethylenedioxy)-17(beta)-(propyn-1-yl)estra-5(10),9(11)-diene-17(beta)-ol (III), which is epoxidized with H₂O₂ in hexafluoroacetone-methylene chloride yielding 3,3-(ethylenedioxy)-17(beta)-(propyn-1-yl)-5(alpha),10(alpha)-epoxyestra-9(11)-en-17(beta)-ol (IV). The reaction of (IV) with 4-dimethylaminophenylmagnesium bromide (V) in THF affords 11(beta)-(4-dimethylaminophenyl)-3,3-(ethylenedioxy)-17(beta)-(propyn-1-yl)estra-9-en-17(beta)-ol (VI), which is finally deprotected by a treatment with HCl in metnanol.