雌二醇分子式的C3和C17位各有一羟基；异黄酮和黄酮类化合物是由一个异环化合物名吡喃(Pyran)的将二个酚环连结在一起，形成一个骨架，两个酚环的C7和C′4位各有一对应于雌二醇C3和C17位的羟基；而且异黄酮类化合物C7和C′4位...
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Tetrahydro-4H-pyran-4-one 四氢吡喃酮
tetrahydro-2H-pyran-4-ol 四氢吡喃醇
Pyran Copolymer 吡喃共聚物
pyran ring 吡喃环
4h-pyran 吡喃
benzo pyran 苯并吡喃
pyran co-polymer 吡喃共聚物
tetrahydro-pyran-4-one 四氢吡喃酮
N an unsaturated heterocyclic compound having a ring containing five carbon atoms and one oxygen atom and two double bonds. It has two isomers depending on the position of the saturated carbon atom relative to the oxygen 吡喃
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