C2H4O2

C2H4O2 may refer to:

Compounds sharing the molecular formula:
 * Acetic acid
 * Dihydroxyethene isomers:
 * 1,1-Dihydroxyethene
 * (E)-1,2-Dihydroxyethene
 * (Z)-1,2-Dihydroxyethene
 * Dioxetane isomers:
 * 1,2-Dioxetane
 * 1,3-Dioxetane
 * Glycolaldehyde
 * Methyldioxirane
 * Methyl formate
 * Oxiranol