chemistry

Lefetamine

Lefetamine 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 Lefetamine rather than just read about it. In short: Lefetamine (Santenol) is a drug which is a stimulant and also an analgesic with effects comparable to codeine. Discovery The parent structure of lefetamine, 1,2-diphenylethylamine was first synthesized in the 1940s and showed weak analgesic activity.

Key takeaways

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

Reference excerpt

Lefetamine (Santenol) is a drug which is a stimulant and also an analgesic with effects comparable to codeine.

Discovery The parent structure of lefetamine, 1,2-diphenylethylamine was first synthesized in the 1940s and showed weak analgesic activity. Lefetamine itself was first investigated in Japan in the 1950s. The L-isomer showed weak analgesic action comparable to codeine and antitussive action far weaker than codeine. The d-isomer showed no such activity but caused seizures in rats.

Society and culture It was abused in Japan during the 1950s. In a small study in 1989 it showed some effect against opioid withdrawal symptoms without causing withdrawal symptoms itself. It was concluded that it may be an opioid partial agonist. It has been abused in Europe; in 1989 a small study of 15 abusers and some volunteers found that it had some partial similarity to opioids, that it produced withdrawal symptoms, and had dependence and abuse potential to a certain degree. In a small study in 1994, it was compared to clonidine and buprenorphine in the detoxification of methadone patients and found to be inferior to both of them. Regulation may vary; it does not appear as either a narcotic or non-narcotic under the US Controlled Substances Act 1970 The Canadian Controlled Drugs and Substances Act was amended in 2016 to include the substance as a Schedule III substance. Possession without legal authority can result in maximum 3 years imprisonment. Further, Health Canada amended the Food and Drug Regulations in May, 2016 to classify Lefetamine as a controlled drug.

Research Some related pyrrylphenylethanones had analgesic activity comparable to morphine. Some pyrrole analogues were reported to have analgesic effects comparable to lefetamine and being devoid of neurotoxic properties.

See also Alpha-D2PV AD-1211 Diphenidine Diphenpipenol Ephenidine Fluorolintane Lanicemine Methoxphenidine (MXP) MT-45

References

Illustrations

Worked examples

Example 1 — a first encounter with Lefetamine

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

In research: Lefetamine 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 Lefetamine 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: Lefetamine is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1,2-Diarylethylamines, Dimethylamino compounds, Drugs not assigned an ATC code, so understanding it makes those chapters shorter.
In everyday life: Look for Lefetamine 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 Lefetamine in 20 minutes

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

Frequently asked questions

What is Lefetamine in simple terms?

Lefetamine (Santenol) is a drug which is a stimulant and also an analgesic with effects comparable to codeine. Discovery The parent structure of lefetamine, 1,2-diphenylethylamine was first synthesized in the 1940s and showed weak analgesic activity.

Why does Lefetamine 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 Lefetamine?

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 Lefetamine.