Anandamide, also known as arachidonoylethanolamide or AEA, is an endogenous cannabinoid neurotransmitter found in animal and human organs, especially in the brain. It was isolated and its structure was elucidated by Czech analytical chemist LumÃr OndÅ™ej HanuÅ¡ and American molecular pharmacologist William Anthony Devane in the Laboratory of Raphael Mechoulam, at the Hebrew University in Jerusalem in 1992. The name is taken from the Sanskrit word ananda, which means "bliss, delight", and amide.