C4H8O3

The molecular formula C4H8O3 may refer to:


 * Hydroxybutyric acids:
 * 2-Hydroxybutyric acid (alpha-hydroxybutyric acid)
 * beta-Hydroxybutyric acid (3-hydroxybutyric acid)
 * gamma-Hydroxybutyric acid (4-hydroxybutyric acid, GHB)
 * Hydroxyisobutyric acids
 * 2-Hydroxyisobutyric acid
 * 3-Hydroxyisobutyric acid
 * Methyl lactate