science

XOB

XOB is a science 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 XOB rather than just read about it. In short: XOB, also known as ASR-6001 or as N-[(4-phenylbutoxy)hexyl]-4-bromo-2,5-dimethoxyphenethylamine, is a serotonin 5-HT2A receptor antagonist and voltage-gated sodium channel (VGSC) blocker of the phenethylamine and 2C families. It is a derivative of 2C-B in which the amine-containing side chain has been extended with the same long group found in salmeterol.

Key takeaways

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

Reference excerpt

XOB, also known as ASR-6001 or as N-[(4-phenylbutoxy)hexyl]-4-bromo-2,5-dimethoxyphenethylamine, is a serotonin 5-HT2A receptor antagonist and voltage-gated sodium channel (VGSC) blocker of the phenethylamine and 2C families. It is a derivative of 2C-B in which the amine-containing side chain has been extended with the same long group found in salmeterol. The drug is of relatively low potency as a serotonin 5-HT2A receptor antagonist. It shows modest selectivity for the serotonin 5-HT2A receptor over the serotonin 5-HT2B and 5-HT2C receptors. XOB was accidentally found to have local anesthetic properties upon contact with human skin, which led to the elucidation of its sodium channel-blocking activity. XOB was developed in part by researchers at the Alexander Shulgin Research Institute (ASRI).

See also Substituted methoxyphenethylamine 2C (psychedelics) Serotonin 5-HT2A receptor antagonist Evenamide

References

External links XOB - Isomer Design

Worked examples

Example 1 — a first encounter with XOB

Start with the simplest possible case. Write down what XOB claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, 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 XOB 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 XOB 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 XOB

In research: XOB appears in science 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 XOB 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: XOB is common in secondary-school and first-year university syllabi. It links to neighbouring topics 2C (psychedelics), 5-HT2A antagonists, Alexander Shulgin Research Institute, so understanding it makes those chapters shorter.
In everyday life: Look for XOB 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 XOB in 20 minutes

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

Frequently asked questions

What is XOB in simple terms?

Why does XOB matter?

Because it connects several science 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 XOB?

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 XOB.

XOB