二氧戊环是具有化学式（CH2）2O2CH2的杂环缩醛。它与四氢呋喃通过交换CH2基团的一种氧有关。相应的饱和6元C4O2环被称为二恶烷。异构体1,2-二氧杂环戊烷（其中两个氧中心相邻）是过氧化物。1,3-二氧杂环戊烷用作溶剂和聚缩醛中的共聚单体。
2,2-Difluorobenzo[d][1,3]dioxol-5-amine
2,2-Dimethylbenzo[d][1,3]dioxol-5-amine
6-Bromo-2,2-difluorobenzo[d][1,3]dioxol-5-amine
(2,2-Difluorobenzo[d][1,3]dioxol-5-yl)boronic acid
4-Ethynyl-2,2-difluoro-1,3-benzodioxole
Methyl 2,2-difluorobenzo[d][1,3]dioxole-5-carboxylate
2,2-Difluorobenzo[d][1,3]dioxol-5-ol
4-Amino-2,2-difluoro-1,3-benzodioxole
(2,2-Difluorobenzo[d][1,3]dioxol-5-yl)methanol
(2,2-Difluorobenzo[d][1,3]dioxol-5-yl)methanamine
5-Bromo-2,2-difluorobenzodioxole
2,2-Difluoro-4-iodobenzo[d][1,3]dioxole
2,2-Difluorobenzo[d][1,3]dioxole-4-carboxylic acid
2,2-Difluorobenzo[d][1,3]dioxole-5-carboxylic acid
(2,2-Difluorobenzo[d][1,3]dioxol-4-yl)boronic acid
5-(Chloromethyl)-2,2-difluorobenzo[d][1,3]dioxole
2,2-Difluorobenzo[d][1,3]dioxole
(S)-1-(2,2-Difluorobenzo[d][1,3]dioxol-4-yl)ethanamine hydrochloride
(R)-1-(2,2-Difluorobenzo[d][1,3]dioxol-4-yl)ethanamine hydrochloride
(1S)-1-(2,2-difluorobenzo[d]1,3-dioxolen-4-yl)ethylamine
(R)-1-(2,2-difluoro-benzo[1,3]dioxol-4-yl)-ethylamine
2-Amino-3-(2,2-difluorobenzo[d][1,3]dioxol-5-yl)propanoic acid hydrochloride
5,6-Dichlorobenzo[d][1,3]dioxole
5-Chloro-2,2-difluoro-1,3-benzodioxole
6-Chlorobenzo[d][1,3]dioxol-5-amine
6-Chloro-2,2-difluorobenzo[d][1,3]dioxol-5-amine
5-Chlorobenzo[d][1,3]dioxole
(2,2-Dimethylbenzo[d][1,3]dioxol-4-yl)methanamine
5-Bromo-2,2-dimethylbenzo[d][1,3]dioxole
