The second can be between carbons 6 and 7 on ring B: File:Chlormadinone_acetate.svg|
Chlormadinone acetate (
progestin) File:Cyproterone_acetate.svg|
Cyproterone acetate (
antiandrogen) File:Dydrogesterone.png|
Dydrogesterone (progestin) File:Megestrol_acetate.svg|
Megestrol acetate (progestin,
antineoplastic,
appetite stimulant) File:Canrenone.png|
Canrenone (
aldosterone antagonist) File:Medrogestone.png|
Medrogestone (progestin) ==1-ene==