chemistry

Ocfentanil

Ocfentanil 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 Ocfentanil rather than just read about it. In short: Ocfentanil (INN; also called A-3217) is a potent synthetic opioid structurally related to fentanyl that was developed in the early 1990s as one of a series of potent naloxone-reversible opioids. The aim was to obtain an opioid with better therapeutic indices regarding cardiovascular effects and respiratory depression compared to fentanyl.

Key takeaways

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

Reference excerpt

Ocfentanil (INN; also called A-3217) is a potent synthetic opioid structurally related to fentanyl that was developed in the early 1990s as one of a series of potent naloxone-reversible opioids. The aim was to obtain an opioid with better therapeutic indices regarding cardiovascular effects and respiratory depression compared to fentanyl. Despite showing reasonable results in human clinical trials, Ocfentanil was never developed for medical use. However, it subsequently began to be sold as a designer drug around 2013. Study of the analgesic activity of ocfentanil using the mouse hot plate test (55 °C) gave an ED50 of 0.007 mg/kg compared to 0.018 mg/kg for fentanyl, indicating that ocfentanil is approximately 2.5 times as potent as fentanyl in this test. In human volunteers, ocfentanil induces effective analgesia at 1 μg/kg, while at doses up to 3 μg/kg, analgesia and respiratory depression occurred in a dose-dependent manner. One study suggests ocfentanil may be as effective as morphine in post-operative relief, and it has also been studied as a supplement to general anesthesia. Researchers concluded that it appears to be similar in action to fentanyl, with 3 μg/kg of ocfentanil approximately equivalent to 5 μg/kg of fentanyl. Side effects of fentanyl analogs are similar to those of fentanyl itself, including itching, nausea and potentially serious respiratory depression, which can be life-threatening. Fentanyl analogs have killed hundreds of people throughout Europe and the former Soviet republics since the most recent resurgence in use began in Estonia in the early 2000s, and novel derivatives continue to appear.

Legal status As of October 2015, Ocfentanil is a controlled substance in China. Ocfentanil has been a Schedule I controlled drug in the USA since February 1, 2018.

References

Illustrations

Worked examples

Example 1 — a first encounter with Ocfentanil

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

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

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

Frequently asked questions

What is Ocfentanil in simple terms?

Why does Ocfentanil 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 Ocfentanil?

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 Ocfentanil.