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. ...

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 ...

hallucinogenic Hallucinogens are a large, diverse class of psychoactive drugs that can produce altered states of consciousness characterized by major alterations in thought, mood, and perception as well as other changes. Most hallucinogens can be categorize ...

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 In organic chemistry, a methoxy group is the functional group consisting of a methyl group bound to oxygen. This alkoxy group has the formula . On a benzene ring, the Hammett equation classifies a methoxy substituent at the ''para'' position ...

groups: 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 am ...

cactus A cactus (, or less commonly, cactus) is a member of the plant family Cactaceae, a family comprising about 127 genera with some 1750 known species of the order Caryophyllales. The word ''cactus'' derives, through Latin, from the Ancient Gre ...

alkaloid Alkaloids are a class of basic BASIC (Beginners' All-purpose Symbolic Instruction Code) is a family of general-purpose, high-level programming languages designed for ease of use. The original version was created by John G. Kemeny and Th ...

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 ...

. 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 s ...

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 s ...

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 Humans (''Homo sapiens'') are the most abundant and widespread species of primate, characterized by bipedalism and exceptional cognitive skills due to a large and complex brain. This has enabled the development of advanced tools, culture, ...

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 A grey market or dark market (sometimes confused with the similar term " parallel market") is the trade of a commodity through distribution channels that are not authorized by the original manufacturer or trade mark proprietor. Grey market p ...

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

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and Japan. 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 In chemistry, a chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, ...

, C₁₂H₁₉NO₃, and the same

molecular mass The molecular mass (''m'') is the mass of a given molecule: it is measured in daltons (Da or u). Different molecules of the same compound may have different molecular masses because they contain different isotopes of an element. The related quant ...

, 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 The Psychoactive Substances Act 2016 (c. 2) is an Act of the Parliament of the United Kingdom intended to restrict the production, sale and supply of a new class of psychoactive substances often referred to as "legal highs". The bill was given ...

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 Escaline (3,5-methoxy-4-ethoxyphenethylamine) is a psychedelic drug and entheogen of the phenethylamine class of compounds. Escaline was first synthesized and reported in the scientific literature by Benington, et al., in 1954, but was later re-ex ...

. https://www.deadiversion.usdoj.gov/schedules/orangebook/orangebook.pdf

TMAs

Properties

Legality

Sweden

United Kingdom

United States of America

See also

References

External links