ALD-52 is also known as 1-Acetyl-N,N-diethyllysergamide, ALD, N-acetyl-LSD, Acetyl lysergic acid diethylamide, d-acetyl lysergic acid diethylamide, d-acetyldiethyllysergamide or by its systematic name of (6aR,9R)-4-acetyl-N,N-diethyl-7-methyl-4,6,6a,7,8,9-hexahydroindolo[4,3-fg]quinoline-9-carboxamide. It is a controlled substance via the Federal Analog Act for being an analogue of LSD. It has a chemical formula of C22H27N3O2. ALD-52 has a CAS number of 3270-02-8, a PubChem Identifier of CID 201111, and a ChemSpider Identifier of 174121.
What is ALD-52?
Found in TiHKAL by Shulgin, ALD-52 was entry #26. It is a chemical analogue of LSD, or lysergic acid diethylamide. Albert Hoffman originally discovered the drug but wasn't widely known or studied until the 1960s during the rise of psychedelics. ALD-52 was part of the very first drug analogue trial in the United States. Also in Shulgin's TiHKAL was the doses for the drug, in the 50-175 µg range. Safety-wise, it appears that ALD-52 has a lower intravenous toxicity in rabbits and a lower pyretogenic effects, but double the antiserotonin effect versus LSD in the same tests.
What is ALD-52 used for?
Being an analogue of LSD means that ALD-52 has psychedelic tendencies and is used recreationally for that effect. Underground chemical labs in the sixties were widely making the drug and is rumored to have been the main ingredient in Orange Sunshine, a popular late 1960s recreational drug in California. In TiHKAL, by Shulgin, it states that ALD-52 may be less potent than LSD and provides less anxiety and tenseness. ALD-52 is currently illegal in the United States for possession, consumption, and distribution.