chemistry

SC-5233

SC-5233 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 SC-5233 rather than just read about it. In short: SC-5233, also known as 6,7-dihydrocanrenone or 20-spirox-4-ene-3,20-dione, is a synthetic, steroidal antimineralocorticoid of the spirolactone group which was developed by G. D.

Key takeaways

SC-5233 belongs to chemistry; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect SC-5233 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of SC-5233 from memory before moving on to harder problems.

Reference excerpt

SC-5233, also known as 6,7-dihydrocanrenone or 20-spirox-4-ene-3,20-dione, is a synthetic, steroidal antimineralocorticoid of the spirolactone group which was developed by G. D. Searle & Company in the 1950s but was never marketed. It was the first synthetic antagonist of the mineralocorticoid receptor to have been identified and tested in humans. The drug was found to lack appreciable oral bioavailability and to be of low potency when administered parenterally, but it nonetheless produced a mild diuretic effect in patients with congestive heart failure. SC-8109, the 19-nor (19-demethyl) analogue, was developed and found to have improved oral bioavailability and potency, but still had low potency. Spironolactone (SC-9420; Aldactone) followed and had both good oral bioavailability and potency, and was the first synthetic antimineralocorticoid to be marketed. It has about 46-fold higher oral potency than SC-5233. SC-5233 is the propionic acid lactone of testosterone (androst-4-en-17β-ol-3-one) and is also known 3-(3-oxo-17β-hydroxyandrost-4-en-17α-yl)propionic acid γ-lactone or as 17α-(2-carboxyethyl)testosterone γ-lactone. It is the unsubstituted parent or prototype compound of the spirolactone family of steroidal antimineralocorticoids. Similarly to other spirolactones like canrenone and spironolactone, SC-5233 has some antiandrogenic activity and antagonizes the effects of testosterone in animals. In addition, along with SC-8109, it has been found to possess potent progestogenic activity.

References

Illustrations

Worked examples

Example 1 — a first encounter with SC-5233

Start with the simplest possible case. Write down what SC-5233 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 SC-5233 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 SC-5233 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 SC-5233

In research: SC-5233 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 SC-5233 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: SC-5233 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Abandoned drugs, Antimineralocorticoids, Drugs not assigned an ATC code, so understanding it makes those chapters shorter.
In everyday life: Look for SC-5233 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 SC-5233 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what SC-5233 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 SC-5233 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is SC-5233 in simple terms?

SC-5233, also known as 6,7-dihydrocanrenone or 20-spirox-4-ene-3,20-dione, is a synthetic, steroidal antimineralocorticoid of the spirolactone group which was developed by G. D.

Why does SC-5233 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 SC-5233?

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 SC-5233.