C9H8O4

The molecular formula C9H8O4 (molar mass: 180.15 g/mol, exact mass: 180.0423 u) may refer to:


 * Acetozone
 * Aspirin
 * 4-Hydroxyphenylpyruvic acid, a natural phenol
 * Dihydroxycinnamic acids:
 * Caffeic acid (3,4-Dihydroxycinnamic acid)
 * Umbellic acid (2,4-dihydroxycinnamic acid)
 * 2,3-Dihydroxycinnamic acid
 * 2,5-Dihydroxycinnamic acid
 * 3,5-Dihydroxycinnamic acid
 * Homophthalic acid
 * Monomethyl phthalate
 * Uvitic acid