C9H8O3

The molecular formula C9H8O3 (molar mass : 164.16 g/mol, exact mass : 164.047344) may refer to:


 * Caffeic aldehyde, a phenolic aldehyde contained in the seeds of Phytolacca americana
 * Coumaric acids
 * o-Coumaric acid
 * p-Coumaric acid
 * m-Coumaric acid
 * Phenylpyruvic acid
 * Diformylcresol
 * Nadic anhydride