C4H6O

The molecular formula C4H6O may refer to:


 * Crotonaldehyde
 * Cyclobutanone
 * Dihydrofurans
 * 2,3-Dihydrofuran
 * 2,5-Dihydrofuran
 * Divinyl ether
 * Methacrolein
 * Methyl vinyl ketone