ALD-52, also known as 1-acetyl-LSD, is a chemical analogue of lysergic acid diethylamide (LSD).

1-Acetyl-N,N-diethyllysergamide (also known as ALD-52, 1-Acetyl-LSD, 1A-LSD, 1A-LAD, and mistakenly as Orange Sunshine) is a lesser-known psychedelic substance of the lysergamide class that produces LSD-like psychedelic effects when administered. It is structurally related to psychedelic lysergamides like LSD and 1P-LSD and is reported to produce largely indistinguishable effects.

Cas No: 3270-02-8
Formula: C22H27N3O2
IUPAC Name: (6aR,9R)-4-Acetyl-N,N-diethyl-7-methyl-4,6,6a,7,8,9-hexahydroindolo[4,3-fg]quinoline-9-carboxamide
Appearance: White/yellowish powder
Purity: 99.9%