METHODS The hydroxyl groups of magnolol were protected using ketol reaction and the products were purified by recrystallization from hexane.
方法将厚朴酚两羟基缩酮保护,再烷重结晶。
The perservative in liquid beverage was extrcated with n-hexane.The hexane layer was subjected to cyclodextrine polymer resin colume.The colume was eluted with aqueous solution of ethanol.
烷萃取液体饮料中的防腐剂，使萃取液经环糊精交联树脂后，乙醇溶液洗脱。
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But pentane, C5H12, has 3 possible isomers and C6H14, known as hexane, has 5.
但是 C5H12 有 3 种可能的异构体， 而称为己的 C6H14 有 5 种。
Consider this molecule, a hexane with a benzene ring attached to carbon number 2.
这个分子， 一个苯环连接到碳数 2 的己。
And so to de-gum it, you use something called hexane.
因此，为了去除其中的质，你会用到一种名为己的物质。
Sometimes, a hexane can look like a pentane with an ethane sticking off of it.
有时，己看起来像， 面粘着乙。
But so we de-gum it with hexane.
但我们用己脱它。
And hexane, if you go to National Institute of Health or National Library of Medicine, you'll see that that is a known neurotoxin.
而且己， 如果你去美国国家卫生研究院或国家医学图书馆查询，你会发现它是一种已知的神经毒素。
Ketones, add '-one', so a ketone of a hexane would be hexanone, and amines, you just add '-amine' to the end so methenamine or propanamine.
酮，在末尾添加“-酮” ，所以一个六的酮就是己酮，而胺，你只需要在末尾加“-胺” ，比如甲胺或丙胺。
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划词翻译
详细解释
缩酮保护,再
烷重结晶
。
C5H12 有 3 种可能的异构体， 而称为
这个分子， 一个苯环连接到碳数 2 的
质，你会用到一种名为
面粘着乙
