Lysergic acid ethyl-2-hydroxyethylamide

Lysergic acid ethyl-2-hydroxyethylamide (LEO) is a serotonin receptor modulator of the lysergamide family related to lysergic acid diethylamide (LSD). It is the derivative of LSD in which one of its N-ethyl groups of LSD has been hydroxylated at the end or 2 position.