ALD-52

ALD-52
Clinical data
Other names1-Acetyl-N,N-diethyllysergamide, ALD, N-acetyl-LSD, Acetyl lysergic acid diethylamide, d-acetyl lysergic acid diethylamide, d-acetyldiethyllysergamide
Routes of
administration		Oral
Legal status
Legal status
  • AU: Unscheduled
  • BR: Class F2 (Prohibited psychotropics)[1]
  • CA: Unscheduled
  • DE: NpSG (Industrial and scientific use only)
  • UK: Class A
  • US: Unscheduled, could be persecuted under the Federal Analogue Act.
  • Unscheduled in the most countries of the world, Illegal in France, Romania, Switzerland, Finland and Singapore[2]
Pharmacokinetic data
Metabolismhepatic
Excretionrenal
Identifiers
  • (6aR,9R)-4-Acetyl-N,N-diethyl-7-methyl-4,6,6a,7,8,9-hexahydroindolo[4,3-fg]quinoline-9-carboxamide
CAS Number
PubChem CID
ChemSpider
UNII
CompTox Dashboard (EPA)
Chemical and physical data
FormulaC22H27N3O2
Molar mass365.477 g·mol−1
3D model (JSmol)
  • O=C(n1cc2c3c(C4=C[C@@H](C(=O)N(CC)CC)CN([C@@H]4C2)C)cccc13)C
  • InChI=1S/C22H27N3O2/c1-5-24(6-2)22(27)16-10-18-17-8-7-9-19-21(17)15(13-25(19)14(3)26)11-20(18)23(4)12-16/h7-10,13,16,20H,5-6,11-12H2,1-4H3/t16-,20-/m1/s1 checkY
  • Key:FJOWXGYLIWJFCH-OXQOHEQNSA-N checkY
 ☒NcheckY (what is this?)  (verify)

ALD-52, also known as 1-acetyl-LSD, has chemical structural features similar to lysergic acid diethylamide (LSD), a known psychedelic drug.[3][4] Similarly, ALD-52 has been reported to produce psychoactive effects, but its pharmacological effects on humans are poorly understood. Given its psychoactive properties, it has been reported to be consumed as a recreational drug, and the purported first confirmed detection of the substance on the illicit market occurred in April 2016.[4][5]

ALD-52 was initially synthesized in 1957 by Albert Hofmann, who is accredited as the first individual to have synthesised LSD, a chemical analogue of ALD-52. Until the rise in popularity of psychedelics in the 1960s, ALD-52 was not widely studied.[6] It is assumed to act as a prodrug to LSD in humans, but this has yet to be scientifically verified.[7]

  1. ^ Anvisa (2023-07-24). "RDC Nº 804 - Listas de Substâncias Entorpecentes, Psicotrópicas, Precursoras e Outras sob Controle Especial" [Collegiate Board Resolution No. 804 - Lists of Narcotic, Psychotropic, Precursor, and Other Substances under Special Control] (in Brazilian Portuguese). Diário Oficial da União (published 2023-07-25). Archived from the original on 2023-08-27. Retrieved 2023-08-27.
  2. ^ "Arrêté du 20 mai 2021 modifiant l'arrêté du 22 février 1990 fixant la liste des substances classées comme stupéfiants". www.legifrance.gouv.fr (in French). 20 May 2021.
  3. ^ Halberstadt AL, Chatha M, Klein AK, McCorvy JD, Meyer MR, Wagmann L, et al. (August 2020). "Pharmacological and biotransformation studies of 1-acyl-substituted derivatives of d-lysergic acid diethylamide (LSD)". Neuropharmacology. 172: 107856. doi:10.1016/j.neuropharm.2019.107856. PMC 9191647. PMID 31756337. S2CID 208155327.
  4. ^ a b Halberstadt AL, Chatha M, Klein AK, McCorvy JD, Meyer MR, Wagmann L, et al. (August 2020). "Pharmacological and biotransformation studies of 1-acyl-substituted derivatives of d-lysergic acid diethylamide (LSD)". Neuropharmacology. 172: 107856. doi:10.1016/j.neuropharm.2019.107856. PMC 9191647. PMID 31756337.
  5. ^ "EMCDDA–Europol 2016 Annual Report on the implementation of Council Decision 2005/387/JHA | www.emcdda.europa.eu". www.emcdda.europa.eu. Retrieved 2023-10-16.
  6. ^ Troxler F, Hofmann A (1957). "Substitutionen am Ringsystem der Lysergsäure I. Substitutionen am Indol-Stickstoff. 43. Mitteilung über Mutterkornalkaloide" [Substitutions on the ring system of lysergic acid I. Substitutions on the indole nitrogen. 43. Communication on ergot alkaloids]. Helvetica Chimica Acta (in German). 40 (6): 1706–1720. doi:10.1002/hlca.19570400619.
  7. ^ Halberstadt AL, Chatha M, Klein AK, McCorvy JD, Meyer MR, Wagmann L, et al. (August 2020). "Pharmacological and biotransformation studies of 1-acyl-substituted derivatives of d-lysergic acid diethylamide (LSD)". Neuropharmacology. 172: 107856. doi:10.1016/j.neuropharm.2019.107856. PMC 9191647. PMID 31756337.