title: C4H6O3
text: # C4H6O3
  
  The molecular formula $C_4H_6O_3$ may refer to:
  
  * Acetic anhydride
  * Acetoacetic acid
  * Dioxanones
     * p-Dioxanone
     * Trimethylene carbonate
  * trans-4-Hydroxycrotonic acid
  * α-Ketobutyric acid
  * 2-Methyl-3-oxopropanoic acid
  * Methyl pyruvate
  * Propylene carbonate
  * Succinic semialdehyde
  