17α-ethynyl-17β-trifluoroacetoxy-androst-4-en-3-one

17α-Chlorethinyl-4-androsten-17β-ol-3-on

17α-ethynyl-17β-nitro-oxy-4-androsten-3-one

21-Chlor-17-(formyloxy)-4-pregnen-3,20-dion

17α-(Chlorethinyl)-17β-(nitrooxy)-4-androsten-3-on