ALD-52, which is also known as 1-acetyl-LSD, is a member of the lysergamide family. It was originally discovered by Albert Hofmann, but was not widely studied until psychedelics became popular in the 1960s. ALD-52 full upac name is (6aR,9R)-4-acetyl-N,N-diethyl-7-methyl-4,6,6a,7,8,9-hexahydroindolo[4,3-fg]quinoline-9-carboxamide.