chemistry

Tiflorex

Tiflorex 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 Tiflorex rather than just read about it. In short: Tiflorex (TFX), formerly known as flutiorex, is a stimulant amphetamine that was under development as an appetite suppressant in the 1970s, but appears to have been abandoned. It is structurally related to fenfluramine and 4-MTA.

Key takeaways

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

Reference excerpt

Tiflorex (TFX), formerly known as flutiorex, is a stimulant amphetamine that was under development as an appetite suppressant in the 1970s, but appears to have been abandoned. It is structurally related to fenfluramine and 4-MTA. Tiflorex went to phase II clinical trials. The extended release formulation "TFX-SR" produced significant suppression of appetite. It also caused slightly more sleep disturbances and headaches than placebo, as well as mydriasis and a self-reported decrease in arousal. It had little effect on heart rate. Tifluorex is claimed to be a more potent anorectic than fenfluramine, with twice its potency in humans and 4 times its potency in rats.

Pharmacology

Pharmacodynamics The mechanism of action of tiflorex has apparently never been studied. Similar compounds such as fenfluramine, norfenfluramine and 4-MTA act as selective serotonin releasing agents and 5-HT2 receptor agonists. Fenfluramine in particular causes very similar side effects and appetite suppression at therapeutically relevant doses.

Pharmacokinetics In rats, tiflorex is rapidly N-dealkylated to norflutiorex. Both tiflorex and norflutiorex appear to be excreted in urine.

Synthesis

The Rosenmund reduction of 3-(trifluoromethylthio)benzoyl chloride [51748-28-8] (1) gave 3-((trifluoromethyl)thio)benzaldehyde [51748-27-7] (2). Henry reaction with nitroethane led to 1-(2-nitroprop-1-en-1-yl)-3-[(trifluoromethyl)sulfanyl]benzene [176242-84-5] (3). With the aid of iron catalyst in concentrated HCl acid there occurred FGI into 1-(3'-trifluoromethylthiophenyl)-2-propanone, CID:21325269 (4'). Reductive amination with ethylamine and formic acid as the reductant completed the synthesis of tiflorex (5).

References

Illustrations

Worked examples

Example 1 — a first encounter with Tiflorex

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

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

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

Frequently asked questions

What is Tiflorex in simple terms?

Why does Tiflorex 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 Tiflorex?

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 Tiflorex.