the following were found to express affinities relative to cortisol which was considered to be 100 : corticosterone ( 100 ) , progesterone ( 10 ) , cortisone ( 8 ) , 5 alpha-pregnane-3 , 20-dione ( 2 ) , and 20 alpha-hydroxy-4-pregnen-3-one ( less than 1 ) .
C0033308
progesterone
C0012311
20 alpha-hydroxy-4-pregnen-3-one