nonradioactive r5020 and progesterone effectively inhibited [ 3h ] r5020 binding to progestin binding sites , while estradiol-17 beta , dihydrotestosterone ( 17 beta-hydroxy-5 alpha-androstan-3-one ) , dexamethasone ( 9-fluoro-11 beta , 17 , 21-trihydroxy-16 alpha methyl-1,4-pregnadiene-3,20-dione ) or additional cortisol were ineffective .
C0033308
progesterone
C0033306
progestin