C4H6O3
# 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
