P302+P352：IF ON SKIN: wash with plenty of soap and water.
P305+P351+P338：IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P308+P313：IF exposed or concerned: Get medical advice/attention.
Description
Mestranol is the 3-methyl ether of ethinylestradiol. It is a biologically inactive prodrug of ethinylestradiol to which it is demethylated in the liver with a conversion efficiency of 70% (50 μg of mestranol is pharmacokinetically bioequivalent to 35 μg of ethinylestradiol).
