moreover , in the urines of both of these groups the same amounts of radioactive mestranol ( 1.1 % -6.3 % of the urinary radioactivity ) and 2-hydroxy-ethynylestradiol ( 0.9 % -3.9 % of the urinary radioactivity ) were measured .
C0025506
mestranol
C0015011
ethynylestradiol