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Chemical and physical data
Formula C13H18N2
Molar mass 202.30 g/mol

α,N,N-Trimethyltryptamine (α,N,N-TMT, α-TMT, ATMT) is a psychoactive drug of the tryptamine chemical class which acts as a psychedelic hallucinogen. It is similar in structure to the other psychedelics of the tryptamine class such as dimethyltryptamine (DMT) and α-methyltryptamine (α-MT).

α-TMT has been animal tested in comparison with α-MT, and was found to produce similar effects to α-MT but with only around half the potency.[1] Anecdotal reports from human users suggest that it produces psychedelic effects similar to those of other tryptamine derivatives when taken orally at a dose of around 80–120 mg, however it does not appear to have been widely sold or used, and its safety profile has not been studied.

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  1. ^ Kalir A, Szara S. Synthesis and pharmacological activity of alkylated tryptamines. Journal of Medicinal Chemistry. 1966 May;9(3):341-4.