on the first day of collection , the major radiolabeled metabolites were 21-hydroxylated steroids ( e.g . allo-tetrahydrocorticosterone and 5 alpha- and beta-pregnane-3 alpha,11 beta,20 alpha,21-tetrol ) , but by the third day , at least 75 % of the excreted activity was associated with 21-deoxysteroids , such as 3 alpha,20 alpha-dihydroxy-5 alpha ( and beta ) -pregnan-11-one and 5 alpha- and beta-pregnane-3 alpha,11 beta,20 alpha-triol .
C0038317
steroids
C0033006
pregnane