in the blood and testis of older prepubertal rats , major 17-oh-c21 and c19 metabolites of progesterone were 5alpha-reduced steroids such as 3alpha , 17alpha-dihydroxy-5alpha-pregnan-20-one , 5alpha-androstane-3alpha,17beta-diol and androsterone .
C0038317
steroids
C0002854
androstane