chemistry

Piperidine-4-sulfonic acid

Piperidine-4-sulfonic acid 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 Piperidine-4-sulfonic acid rather than just read about it. In short: Piperidine-4-sulfonic acid (P4S) is a synthetic GABAA receptor agonist and a cyclized analogue of the inhibitory neurotransmitter γ-aminobutyric acid (GABA). Pharmacology The drug is a potent and selective GABAA receptor partial agonist.

Key takeaways

Piperidine-4-sulfonic acid belongs to chemistry; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Piperidine-4-sulfonic acid to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Piperidine-4-sulfonic acid from memory before moving on to harder problems.

Reference excerpt

Piperidine-4-sulfonic acid (P4S) is a synthetic GABAA receptor agonist and a cyclized analogue of the inhibitory neurotransmitter γ-aminobutyric acid (GABA).

Pharmacology The drug is a potent and selective GABAA receptor partial agonist. It shows functional selectivity at GABAA receptors of different α subunit compositions, with high activational efficacy at GABAA receptors containing α2, α3, and α5 subunits (EmaxTooltip maximal efficacy = 75–96%) and low efficacy at GABAA receptors containing α1, α4, and α6 subunits (Emax = 7.2–21%). As such, it is said to activate the former receptors but to essentially block the latter receptors. This is in contrast to other GABAA receptor agonists like isoguvacine and gaboxadol (THIP), which show broadly higher activational efficacies at GABAA receptors of different subunit compositions. In addition to its GABAA receptor partial agonism, P4S is described as a moderately potent GABAA-ρ receptor antagonist, a property that it shares with gaboxadol. Unlike certain related compounds like muscimol, P4S is not a GABA reuptake inhibitor. P4S is a highly charged zwitterion. In contrast to other related GABAA receptor agonists like muscimol and gaboxadol, P4S is unable to cross the blood–brain barrier and hence is peripherally selective. As a result of this, animal behavioral studies with this compound have not been possible.

Discovery P4S was first described in the scientific literature by Povl Krogsgaard-Larsen and colleagues by 1979. Along with gaboxadol, it was one of the first selective GABAA receptor agonists to be identified.

See also Isonipecotic acid (P4C) Imidazole-4-acetic acid (IAA) 4-PIOL Thio-4-PIOL

References

Illustrations

Worked examples

Example 1 — a first encounter with Piperidine-4-sulfonic acid

Start with the simplest possible case. Write down what Piperidine-4-sulfonic acid 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 Piperidine-4-sulfonic acid 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 Piperidine-4-sulfonic acid 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 Piperidine-4-sulfonic acid

In research: Piperidine-4-sulfonic acid 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 Piperidine-4-sulfonic acid 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: Piperidine-4-sulfonic acid is common in secondary-school and first-year university syllabi. It links to neighbouring topics Biased ligands, Drugs not assigned an ATC code, GABAA-rho receptor antagonists, so understanding it makes those chapters shorter.
In everyday life: Look for Piperidine-4-sulfonic acid 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 Piperidine-4-sulfonic acid in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Piperidine-4-sulfonic acid 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.
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Frequently asked questions

What is Piperidine-4-sulfonic acid in simple terms?

Piperidine-4-sulfonic acid (P4S) is a synthetic GABAA receptor agonist and a cyclized analogue of the inhibitory neurotransmitter γ-aminobutyric acid (GABA). Pharmacology The drug is a potent and selective GABAA receptor partial agonist.

Why does Piperidine-4-sulfonic acid 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 Piperidine-4-sulfonic acid?

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 Piperidine-4-sulfonic acid.