chemistry

LEK-8829

LEK-8829 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 LEK-8829 rather than just read about it. In short: LEK-8829, also known as desoxy-LEK-8842, is a non-selective monoamine receptor modulator of the ergoline family related to the psychedelic drug LSD which has been studied as a potential novel antipsychotic. It is an analogue of LSD in which the oxygen atom of the carboxamide moiety has been removed to instead form an aminomethyl moiety, along with different amine substitutions (methyl and propynyl instead of diethyl…

Key takeaways

LEK-8829 belongs to chemistry; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect LEK-8829 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of LEK-8829 from memory before moving on to harder problems.

Reference excerpt

LEK-8829, also known as desoxy-LEK-8842, is a non-selective monoamine receptor modulator of the ergoline family related to the psychedelic drug LSD which has been studied as a potential novel antipsychotic. It is an analogue of LSD in which the oxygen atom of the carboxamide moiety has been removed to instead form an aminomethyl moiety, along with different amine substitutions (methyl and propynyl instead of diethyl). The drug acts as a dopamine D1 receptor agonist, dopamine D2 receptor antagonist, and serotonin 5-HT1A and 5-HT2A receptor antagonist, among other actions. Its affinities for various receptors have been reported, including for the dopamine D1 receptor (Ki = 827 nM), dopamine D2 receptor (Ki = 37 nM), serotonin 5-HT1A receptor (Ki = 3.9 nM), serotonin 5-HT2A receptor (Ki = 5.4 nM), α1-adrenergic receptor (Ki = 245 nM), and α2-adrenergic receptor (Ki = 48 nM), among others. However, it may be more potent as a dopamine D1 receptor agonist in vivo. LEK-8829 produces effects in animals including hypolocomotion, sedation, catalepsy, antipsychotic-like effects, antiparkinsonian-like effects, slight vasoconstriction, increased or decreased blood pressure, and decreased heart rate. It dose-dependently inhibits 5-hydroxytryptophan (5-HTP)-induced head twitches. The drug also reduces cocaine self-administration and increases striatal opioid peptide levels, but is not self-administered itself. Similarly to LSD, LEK-8829 is sensitive to photodegradation, rapidly decomposing into LEK-1814 (10α-hydroxy-9,10-dihydro-LEK-8829) upon direct exposure to daylight. This degradation product was several orders of magnitude less potent than LEK-8829 as a serotonin receptor antagonist. The chemical synthesis of LEK-8829 has been described. Close analogues of LEK-8829 include LEK-8804, LEK-8822, LEK-8841, and LEK-8842 (TRALA-01), among others. In contrast to LEK-8829, LEK-8804 shows serotonin 5-HT1A receptor agonism and LEK-8842 shows high-efficacy serotonin 5-HT2A receptor partial agonism. LEK-8829 was first described in the scientific literature by 1994. It was developed by the Slovenian pharmaceutical company Lek Pharmaceuticals. The drug was developed and investigated for potential medical use, including treatment of schizophrenia, other forms of psychosis, parkinsonism, and drug addiction. However, it never progressed beyond the preclinical research stage of development.

See also Substituted ergoline Substituted lysergamides § Related compounds LEK-8842 (oxo-LEK-8829) LEK-8822 (9,10-dihydro-LEK-8842) LEK-8841 (2-bromo-LEK-8842) Romergoline (FCE-23884)

References

Illustrations

Worked examples

Example 1 — a first encounter with LEK-8829

Start with the simplest possible case. Write down what LEK-8829 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 LEK-8829 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 LEK-8829 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 LEK-8829

In research: LEK-8829 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 LEK-8829 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: LEK-8829 is common in secondary-school and first-year university syllabi. It links to neighbouring topics 5-HT1A antagonists, 5-HT2A antagonists, Abandoned drugs, so understanding it makes those chapters shorter.
In everyday life: Look for LEK-8829 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 LEK-8829 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what LEK-8829 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 LEK-8829 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is LEK-8829 in simple terms?

Why does LEK-8829 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 LEK-8829?

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 LEK-8829.