An epoxide group and an out-ring double-bond are attached to the 11-membered ring. The molecule contains one primary and two tertiary hydroxyl groups.

十一员环上带有一个环氧基和一个环外双键，分子中含有两个叔羟基和一个伯羟基。

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Oxirane Test This method, which provides a measure of epoxide content, is based on the addition of hydrogenhalides to the oxirane group.

环氧乙烷试验这个试验测定环氧化物含量。它以环氧乙烷基团上卤化氢的增加量为基础。

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