3beta-hydroxy-5beta-pregnane-20-one + NADPH + H(+) = 3beta,20alpha-dihydroxy-5beta-pregnane + NADP(+)
3beta-hydroxy-5beta-pregnane-20-one + nadph + h(+) = 3beta,20alpha-dihydroxy-5beta-pregnane + nadp(+)
3beta-hydroxy-5beta-pregnane-20-one + NADPH + H(+) = 3beta,20alpha-dihydroxy-5beta-pregnane + NADP(+)
3beta-hydroxy-5beta-pregnane-20-one + nadph + h(+) = 3beta,20alpha-dihydroxy-5beta-pregnane + nadp(+)