Along with its epimer<unk>  (11α-OHP),<unk> -OHP has been identified as a very potent competitive inhibitor of both isoforms (1 and 2) of<unk> -hydroxysteroid dehydrogenase <unk> -HSD).
11β-Hydroxyprogesterone
11α-Hydroxyprogesterone
11-Ketoprogesterone
17α-Hydroxyprogesterone
Methyl-1-testosterone
17α-Methylprogesterone
16α-Hydroxyestrone
17α-Hydroxypregnenolone