{{DISPLAYTITLE: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