science

Methyl-DOB

Methyl-DOB is a science 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 Methyl-DOB rather than just read about it. In short: Methyl-DOB, or N-methyl-DOB, also known as 4-bromo-2,5-dimethoxy-N-methylamphetamine, MDOB, or M-154, is a psychoactive drug of the phenethylamine, amphetamine, and DOx families. It is the N-methyl derivative of the psychedelic drug DOB.

Key takeaways

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

Reference excerpt

Methyl-DOB, or N-methyl-DOB, also known as 4-bromo-2,5-dimethoxy-N-methylamphetamine, MDOB, or M-154, is a psychoactive drug of the phenethylamine, amphetamine, and DOx families. It is the N-methyl derivative of the psychedelic drug DOB.

Use and effects In his book PiHKAL (Phenethylamines I Have Known and Loved), Alexander Shulgin lists methyl-DOB's dose as greater than 8 mg orally and its duration as "probably rather long". Its onset was about 1.3 hours. Analogously to the case of other N-methylated phenethylamines, the potency of methyl-DOB is dramatically reduced compared to DOB, which has a listed dose of 1 to 3 mg orally. At tested doses of 8 to 10 mg orally, the effects of methyl-DOB have been reported to include lightheadedness, spaciness, physical effects or body load, tight and rubby teeth, tenseness, exaggerated reflexes, pupil dilation, and next-day hangover. No clear psychoactive or hallucinogenic effects were described. The drug may also potentiate other psychedelic drugs like even on the next day however, with a "severe response" to a low 5 mg dose of psilocybin 24 hours later occurring in one instance.

Interactions

Pharmacology

Pharmacodynamics Methyl-DOB shows affinity for the serotonin 5-HT2A and 5-HT2C receptors (Ki = 79–80 nM and 98 nM, respectively). Its affinities for serotonin 5-HT2 receptors were 1.4- to 9.7-fold lower than those of DOB depending on the receptor and radioligand. Methyl-DOB substituted for (R)-DOB in rodent drug discrimination tests, but was approximately 16-fold less potent in comparison.

Chemistry

Synthesis The chemical synthesis of methyl-DOB has been described.

Analogues Analogues of methyl-DOB include N-methyl-DOI, IDNNA (N,N-dimethyl-DOI), N-methyl-2C-B, Beatrice (N-methyl-DOM), N-methyl-DOET, N-methyl-TMA-2, and methyl-TMA (N-methyl-TMA), among others.

History Methyl-DOB was first described in the scientific literature by Richard Glennon and colleagues by 1987. Subsequently, it was described in greater detail by Alexander Shulgin in his book PiHKAL (Phenethylamines I Have Known and Loved) in 1991.

Society and culture

Legal status Methyl-DOB is a controlled substance in Canada under phenethylamine blanket-ban language.

Illustrations

Worked examples

Example 1 — a first encounter with Methyl-DOB

Start with the simplest possible case. Write down what Methyl-DOB claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, 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 Methyl-DOB 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 Methyl-DOB 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 Methyl-DOB

In research: Methyl-DOB appears in science 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 Methyl-DOB 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: Methyl-DOB is common in secondary-school and first-year university syllabi. It links to neighbouring topics DOx (psychedelics), Drugs not assigned an ATC code, Methamphetamines, so understanding it makes those chapters shorter.
In everyday life: Look for Methyl-DOB 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 Methyl-DOB in 20 minutes

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

Frequently asked questions

What is Methyl-DOB in simple terms?

Why does Methyl-DOB matter?

Because it connects several science 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 Methyl-DOB?

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 Methyl-DOB.