Acetaldehyde sidoo kale loo yaqaan ethanal, waa kiimiko dabiici ah oo leh caanaha CH3CHO, oo mararka qaarkood loo soo gaabiyo farmashiyaasha MeCHO (Me = methyl).Waa dareere ama gaas aan midab lahayn, oo ku karkaraya meel u dhow heerkulka qolka.Waa mid ka mid ah aldehydes-ka ugu muhiimsan, oo si ballaaran u dhaca dabeecadda waxaana lagu soo saaraa si ballaaran oo warshadaha ah.