title: C5H9NO2
text: # C5H9NO2
  
  The molecular formula $C_5H_9NO_2$ (molar mass : 115.13 g/mol) may refer to:
  
  * Allylglycine
  * (+)-cis-2-Aminomethylcyclopropane carboxylic acid
  * N-Formylmorpholine
  * Proline, an amino acid
  