ANORDRIN (2α, 17α-diethynyl, A-nor-5α-androstane, 2β,17β-diol dipropionate) is a new oral contraceptive which possesses a significant anti-fertility action in various kinds of animals and human being. Starting from dehydro-epiandrosterone acetate the desired product has been synthesized in 6 steps with an over-all yield of 35%. By means of NMR, study the configuration of the C₂ ethynyl group in Anordrin is assigned as α.