Trimethoxyamphetamines (TMAs) are a family of

isomer In chemistry, isomers are molecules or polyatomic ions with identical molecular formulae – that is, same number of atoms of each element – but distinct arrangements of atoms in space. Isomerism is existence or possibility of isomers. Iso ...

psychedelic Psychedelics are a subclass of hallucinogenic drugs whose primary effect is to trigger non-ordinary states of consciousness (known as psychedelic experiences or "trips").Pollan, Michael (2018). ''How to Change Your Mind: What the New Science of ...

drugs A drug is any chemical substance that causes a change in an organism's physiology or psychology when consumed. Drugs are typically distinguished from food and substances that provide nutritional support. Consumption of drugs can be via inhalat ...

. There exist six different TMAs that differ only in the position of the three methoxy

groups A group is a number of persons or things that are located, gathered, or classed together. Groups of people * Cultural group, a group whose members share the same cultural identity * Ethnic group, a group whose members share the same ethnic iden ...

: TMA, TMA-2, TMA-3, TMA-4, TMA-5, and TMA-6. The TMAs are analogs of the

phenethylamine Phenethylamine (PEA) is an organic compound, natural monoamine alkaloid, and trace amine, which acts as a central nervous system stimulant in humans. In the brain, phenethylamine regulates monoamine neurotransmission by binding to trace amin ...

cactus alkaloid

mescaline Mescaline or mescalin (3,4,5-trimethoxyphenethylamine) is a naturally occurring psychedelic protoalkaloid of the substituted phenethylamine class, known for its hallucinogenic effects comparable to those of LSD and psilocybin. Biological sou ...

. The TMAs are

substituted amphetamine Substituted amphetamines are a class of compounds based upon the amphetamine structure; it includes all derivative compounds which are formed by replacing, or substituting, one or more hydrogen atoms in the amphetamine core structure with sub ...

s, however, their mechanism of action is more complex than that of the unsubstituted compound ''amphetamine'', probably involving agonist activity on serotonin receptors such as the

5HT2A receptor The 5-HT2A receptor is a subtype of the 5-HT2 receptor that belongs to the serotonin receptor family and is a G protein-coupled receptor (GPCR). The 5-HT2A receptor is a cell surface receptor, but has several intracellular locations. 5-HT is sh ...

in addition to the generalised dopamine receptor agonism typical of most amphetamines. This action on serotonergic receptors likely underlie the psychedelic effects of these compounds. It is reported that some TMAs elicit a range of emotions ranging from sadness to empathy and euphoria. TMA was first synthesized by Hey, in 1947. Synthesis data as well as human activity data has been published in the book '' PiHKAL''. The most important TMA compound from a pharmacological standpoint is TMA-2, as this isomer has been much more widely used as a recreational drug and sold on the grey market as a so-called

research chemical Research chemicals are chemical substances used by scientists for medical and scientific research purposes. One characteristic of a research chemical is that it is for laboratory research use only; a research chemical is not intended for human o ...

; TMA (sometimes referred to as "mescalamphetamine" or TMA-1) and TMA-6 have also been used in this way to a lesser extent. These three isomers are significantly more active as hallucinogenic drugs, and have consequently been placed onto the illegal drug schedules in some countries such as the Netherlands and

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. The other three isomers TMA-3, TMA-4, and TMA-5 are not known to have been used as recreational drugs to any great extent.

TMAs

Note: Because they are isomers, the TMAs have the same chemical formula, C₁₂H₁₉NO₃, and the same molecular mass, 225.28 g/mol.

Properties

Legality

Sweden

''Sveriges riksdag'' added TMA-2 to schedule I (''"substances, plant materials and fungi which normally do not have medical use"'') as narcotics in Sweden as of Dec 30, 1999, published by ''Medical Products Agency'' in their regulation LVFS 2004:3 listed as 2,4,5-trimetoxiamfetamin (TMA-2).

United Kingdom

Illegal under the Psychoactive Substances Act 2016

United States of America

3,4,5-Trimethoxyamphetamine is listed as a Schedule 1 controlled substance, along with positional isomers 2,4,5-Trimethoxyamphetamine (TMA-5), 2,4,6-Trimethoxyamphetamine (TMA-6) and Escaline. https://www.deadiversion.usdoj.gov/schedules/orangebook/orangebook.pdf

TMAs

Properties

Legality

Sweden

United Kingdom

United States of America

See also

References

External links