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chemistry

Pinacidil

Pinacidil 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 Pinacidil rather than just read about it. In short: Pinacidil is a cyanoguanidine drug that opens ATP-sensitive potassium channels producing peripheral vasodilatation of arterioles. It reduces blood pressure and peripheral resistance and produces fluid retention.

Pinacidil — main illustration
Pinacidil — illustration

Key takeaways

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

Reference excerpt

Pinacidil is a cyanoguanidine drug that opens ATP-sensitive potassium channels producing peripheral vasodilatation of arterioles. It reduces blood pressure and peripheral resistance and produces fluid retention. Pinacidil has been associated with development of hypertrichosis in 2 to 13% of patients.

Synthesis

Condensation of 4-isothiocyanotopyridine [76105-84-5] (1) and 3,3-dimethyl-2-butanamine [3850-30-4] (2) gives thiourea [67027-06-9] (3). Treatment of that intermediate with a mixture of triphenylphosphine, carbon tetrachloride, and triethylamine leads to the unsymmetrical carbodiimide, CID:20501933 (4'). Addition of cyanamid affords pinacidil (5).

References

External links Pinacidil at the U.S. National Library of Medicine Medical Subject Headings (MeSH)

Illustrations

Pinacidil illustration
Pinacidil: Thieme Synthesis:[5][6][7] Patents:[8][9]
Thieme Synthesis:[5][6][7] Patents:[8][9]

Worked examples

Example 1 — a first encounter with Pinacidil

Start with the simplest possible case. Write down what Pinacidil 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 Pinacidil 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 Pinacidil 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 Pinacidil

In research
Pinacidil 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 Pinacidil 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
Pinacidil is common in secondary-school and first-year university syllabi. It links to neighbouring topics 4-Pyridyl compounds, Cardiovascular system drug stubs, Cyanamides, so understanding it makes those chapters shorter.
In everyday life
Look for Pinacidil 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 Pinacidil in 20 minutes

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

Frequently asked questions

What is Pinacidil in simple terms?

Pinacidil is a cyanoguanidine drug that opens ATP-sensitive potassium channels producing peripheral vasodilatation of arterioles. It reduces blood pressure and peripheral resistance and produces fluid retention.

Why does Pinacidil 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 Pinacidil?

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 Pinacidil.

Tags

  • 4-Pyridyl compounds
  • Cardiovascular system drug stubs
  • Cyanamides
  • KATP channel openers

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