C4H9NO2

The molecular formula C4H9NO2 (molar mass: 103.12 g/mol) may refer to:


 * α-Aminobutyric acid
 * β-Aminobutyric acid
 * γ-Aminobutyric acid (GABA)
 * 2-Aminoisobutyric acid
 * 3-Aminoisobutyric acid
 * Nitroisobutane
 * n-Nitrobutane
 * Butyl nitrite
 * Dimethylglycine
 * Isobutyl nitrite