the protein binding of ethinylestradiol ( ee2 ) , gestodene ( gest ) and 3-keto-desogestrel ( kdg ) has been determined by ultrafiltration in the serum of women who had either taken a gestodene ( n = 37 ) or desogestrel ( n = 28 ) containing oral contraceptive for a time period of at least 3 months .
C0047683
3-keto-desogestrel
C0057558
desogestrel