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