furan

詳細解釋：

fu.ran

n.（名詞）
One of a group of colorless, volatile, heterocyclic organic compounds containing a ring of four carbon atoms and one oxygen atom, obtained from wood oils and used in the synthesis of furfural and other organic compounds.
呋喃：無色、易揮發的雜環有機化合物的一種，含有一個由四個碳原子和一個氧原子構成的環，從桐油提煉出來，用於合成糠醛及其它有機化合物
The simplest such compound, C4H 4O. Also called In this sense, also called furfuran
氧雜茂：此類化合物最簡單的形式， C4H 4O 也作 在此意義上也可稱作 furfuran

來源：
fur(fural)
fur(fural)
-an 2
-an2