2,4,5-Trimethoxyamphetamine

2,4,5-Trimethoxyamphetamine
Clinical data
Other namesTMA-2; 2,4,5-TMA; 2,4,5-Trimethoxy-α-methylphenethylamine; 2,5-Dimethoxy-4-methoxyamphetamine; 4-Methoxy-2,5-dimethoxyamphetamine; DOMeO; DOOMe; DOO
Drug classSerotonergic psychedelic; Hallucinogen
Identifiers
IUPAC name
  • 1-(2,4,5-trimethoxyphenyl)propan-2-amine
CAS Number
PubChem CID
ChemSpider
UNII
KEGG
ChEMBL
Chemical and physical data
FormulaC12H19NO3
Molar mass225.288 g·mol−1
3D model (JSmol)
SMILES
  • CC(CC1=CC(=C(C=C1OC)OC)OC)N
InChI
  • InChI=1S/C12H19NO3/c1-8(13)5-9-6-11(15-3)12(16-4)7-10(9)14-2/h6-8H,5,13H2,1-4H3
  • Key:TVSIMAWGATVNGK-UHFFFAOYSA-N

2,4,5-Trimethoxyamphetamine (2,4,5-TMA), also known as TMA-2 or as 2,5-dimethoxy-4-methoxyamphetamine (DOMeO), is a psychedelic drug of the phenethylamine and amphetamine families.[1][2] It is one of the trimethoxyamphetamine (TMA) series of positional isomers.[1][2] The drug is also notable in being the 4-methoxylated member of the DOx (i.e., 4-substituted-2,5-dimethoxyamphetamine) series of drugs.[1][2]

TMA-2 is said to be active at doses of 20 to 40 mg and to have a duration of 8 to 12 hours.[1] It is much more potent than its positional isomer 3,4,5-trimethoxyamphetamine (3,4,5-TMA, TMA, or TMA-1), which is said to be active at doses of 100 to 250 mg and to have a duration of 6 to 8 hours.[3] However, DOM (2,5-dimethoxy-4-methylamphetamine), the analogue of TMA-2 in which its 4-methoxy group has been replaced with a more lipophilic 4-methyl group, is about 10 times more potent than TMA-2.[4]

The drug's affinity (Ki) for the serotonin 5-HT2A receptor has been found to be 1,300 nM.[5] Its EC50Tooltip half-maximal effective concentration at the receptor was 190 nM and its EmaxTooltip maximal efficacy was 84%.[5] The drug was also active at the serotonin 5-HT2B receptor and, to a much lesser extent, at the serotonin 5-HT2C receptor.[5] TMA-2 is inactive at the monoamine transporters.[5] It was inactive at the mouse trace amine-associated receptor 1 (TAAR1), whereas it bound to the rat TAAR1 with an affinity (Ki) of 3,100 nM and was not assessed at the human TAAR1.[5]

See also

References

  1. 1 2 3 4 Shulgin AT, Shulgin A (1991). "#158 TMA-2 2,4,5-TRIMETHOXYAMPHETAMINE". PiHKAL: A Chemical Love Story (1st ed.). Berkeley, CA: Transform Press. ISBN 9780963009609. OCLC 25627628.
  2. 1 2 3 Shulgin A, Manning T, Daley PF (2011). "#118. TMA-2". The Shulgin Index, Volume One: Psychedelic Phenethylamines and Related Compounds. Vol. 1. Berkeley: Transform Press. ISBN 978-0-9630096-3-0.
  3. ↑ Shulgin AT, Shulgin A (1991). "#157 TMA 3,4,5-TRIMETHOXYAMPHETAMINE". PiHKAL: A Chemical Love Story (1st ed.). Berkeley, CA: Transform Press. ISBN 9780963009609. OCLC 25627628.
  4. ↑ Nichols, David E. (2012). "Structure–activity relationships of serotonin 5-HT2A agonists". Wiley Interdisciplinary Reviews: Membrane Transport and Signaling. 1 (5): 559–579. doi:10.1002/wmts.42. ISSN 2190-460X.
  5. 1 2 3 4 5 Kolaczynska KE, Luethi D, Trachsel D, Hoener MC, Liechti ME (2019). "Receptor Interaction Profiles of 4-Alkoxy-Substituted 2,5-Dimethoxyphenethylamines and Related Amphetamines". Front Pharmacol. 10: 1423. doi:10.3389/fphar.2019.01423. PMC 6893898. PMID 31849671.


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