chemistry

TACT908

TACT908 is a chemistry topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand TACT908 rather than just read about it. In short: TACT908, also known as [2-(indolizin-1-yl)ethyl]dimethylamine (2ZEDMA), is a serotonin receptor agonist of the indolizinylethylamine family which is under development for the treatment of cluster headaches. It is a positional isomer of the tryptamine serotonergic psychedelic N,N-dimethyltryptamine (DMT) in which the indole ring has been replaced with an indolizine ring.

Key takeaways

TACT908 belongs to chemistry; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect TACT908 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of TACT908 from memory before moving on to harder problems.

Reference excerpt

TACT908, also known as [2-(indolizin-1-yl)ethyl]dimethylamine (2ZEDMA), is a serotonin receptor agonist of the indolizinylethylamine family which is under development for the treatment of cluster headaches. It is a positional isomer of the tryptamine serotonergic psychedelic N,N-dimethyltryptamine (DMT) in which the indole ring has been replaced with an indolizine ring. The drug acts as a serotonin 5-HT1B and 5-HT2A receptor agonist. Its EC50Tooltip half-maximal effective concentration at the serotonin 5-HT2A receptor is 52 nM (EmaxTooltip maximal efficacy ≈ 30% of that of serotonin) and its EC50 at the serotonin 5-HT1B receptor is 143 nM. TACT908 is said to be a non-hallucinogenic serotonin 5-HT2A receptor agonist. It showed little or no activity at 45 other screened targets, including the serotonin 5-HT1A, 5-HT2B, and 5-HT3 receptors as well as the monoamine transporters (MATs). Other serotonin receptors besides the preceding, such as the serotonin 5-HT2C receptor, were not assessed. The drug was a weak monoamine oxidase inhibitor (MAOI), specifically of monoamine oxidase A (MAO-A) (IC50Tooltip half-maximal inhibitory concentration = 7,252 nM). TACT908 is under development by Tactogen. It was patented by Matthew Baggott of Tactogen in 2023. As of January 2025, the drug is in preclinical research for cluster headaches. The α-methyl and N-desmethyl analogue of TACT908, 1ZP2MA ([1-(indolizin-1-yl)propan-2-yl](methyl)amine or 1-(indolizin-1-yl)-N-methylpropan-2-amine), has also been characterized and described. It is the indolizine analogue of α,N-dimethyltryptamine (α,N-DMT or N-methyl-αMT). 1ZP2MA was found to be a potent dopamine releasing agent, with an EC50 of 62 nM.

See also Indolizinylethylamine Substituted tryptamine § Related compounds List of investigational hallucinogens and entactogens Non-hallucinogenic 5-HT2A receptor agonist N,N-Dimethylisotryptamine (isoDMT) 1Z2MAP1O C-DMT S-DMT TACT411 Rizatriptan TACT833

References

External links TACT908 (2ZEDMA) - Isomer Design

Illustrations

Worked examples

Example 1 — a first encounter with TACT908

Start with the simplest possible case. Write down what TACT908 claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to TACT908 before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about TACT908 ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of TACT908

In research: TACT908 appears in chemistry research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses TACT908 in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: TACT908 is common in secondary-school and first-year university syllabi. It links to neighbouring topics 5-HT1B agonists, Antimigraine drugs, Dimethylamino compounds, so understanding it makes those chapters shorter.
In everyday life: Look for TACT908 outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study TACT908 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what TACT908 means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain TACT908 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is TACT908 in simple terms?

Why does TACT908 matter?

Because it connects several chemistry ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study TACT908?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on TACT908.