这个词是什么意思？
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.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D008656 · MeSH 2026。
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