C9H13NO3

The molecular formula C9H13NO3 (molar mass: 183.20 g/mol, exact mass: 183.089543) may refer to:
 * Adrenaline, also known as epinephrine
 * Ginkgotoxin
 * Nordefrin (Corbadrine, Levonordefrin), a catecholamine
 * Normetanephrine
 * 2,4,5-Trihydroxyamphetamine