skos:definition |
MSH: The 3-methyl ether of ETHINYL ESTRADIOL. It must be demethylated to be biologically active. It is used as the estrogen component of many combination ORAL CONTRACEPTIVES.,NCI: A semisynthetic estrogen. Metabolized by the liver to ethynyl estradiol, mestranol serves as the estrogen component in several combination oral contraceptives. (NCI04)
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