the rank order of the compounds to promote transformation in the absence of molybdate was : medroxyprogesterone acetate ( mpa ) greater than 17 alpha , 21-dimethyl-19-nor-4,9-pregnadiene-3,20-dione ( r5020 ) greater than progesterone much greater than deoxycorticosterone ( doc ) much greater than 20 alpha-hydroxyprogesterone ( 20 alpha oh-p ) .
C0033308
progesterone
C0012311
20