chemistry

Lotrifen

Lotrifen 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 Lotrifen rather than just read about it. In short: Lotrifen (INNTooltip International Nonproprietary Name), also known as trazisoquine and sold under the brand names Canocenta and Privaprol, is an abortifacient which is used in veterinary medicine. It was described in 1978.

Key takeaways

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

Reference excerpt

Lotrifen (INNTooltip International Nonproprietary Name), also known as trazisoquine and sold under the brand names Canocenta and Privaprol, is an abortifacient which is used in veterinary medicine. It was described in 1978.

Synthesis

Reaction of the acyl hydrazide (1) and the carboximidate (2) gives compound (3). Heating this in the presence of sodium hydride cyclises this intermediate, forming the 1,2,4-triazole ring system of the drug. Oxidation of (4) with N-bromoacetamide yields lotrifen.

References

Illustrations

Worked examples

Example 1 — a first encounter with Lotrifen

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

In research: Lotrifen 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 Lotrifen 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: Lotrifen is common in secondary-school and first-year university syllabi. It links to neighbouring topics 4-Chlorophenyl compounds, Abortifacients, Genito-urinary system drug stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Lotrifen 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 Lotrifen in 20 minutes

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

Frequently asked questions

What is Lotrifen in simple terms?

Why does Lotrifen 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 Lotrifen?

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 Lotrifen.