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HA-966

HA-966 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 HA-966 rather than just read about it. In short: HA-966 or (±)-3-amino-1-hydroxy-pyrrolidin-2-one is a molecule used in scientific research as a glycine receptor and NMDA receptor antagonist / low efficacy partial agonist. It has neuroprotective and anticonvulsant, anxiolytic, antinociceptive and sedative / hypnotic effects in animal models.

HA-966 — main illustration
HA-966 — illustration

Key takeaways

  • HA-966 belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect HA-966 to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of HA-966 from memory before moving on to harder problems.

Reference excerpt

HA-966 or (±)-3-amino-1-hydroxy-pyrrolidin-2-one is a molecule used in scientific research as a glycine receptor and NMDA receptor antagonist / low efficacy partial agonist. It has neuroprotective and anticonvulsant, anxiolytic, antinociceptive and sedative / hypnotic effects in animal models. Pilot human clinical trials in the early 1960s showed that HA-966 appeared to benefit patients with tremors of extrapyramidal origin. The two enantiomers of HA-966 have differing pharmacological activity. The glycine/N-methyl-D-aspartate receptor antagonist activity is specific to the (R)-(+)-enantiomer, whereas the sedative and ataxic effects are specific to the (S)-(-)-enantiomer. (R)-(+)-HA-966 did not induce drug-appropriate responding in animals trained to discriminate phencyclidine (PCP) from saline, suggesting that the glycine receptor ligand (R)-(+)-HA-966 has a significantly different behavioral profile than drugs affecting the ion channel of the NMDA receptor complex. (S)-(-)-HA-966 has been described as a "γ-hydroxybutyric acid (GHB)-like agent" and a "potent y-butyrolactone-like sedative", but it shows no affinity for the GABAB receptor (GABABR). HA-966 is structurally a cyclized derivative of norvaline hydroxamate.

See also Rapastinel NRX-1074

References

Illustrations

HA-966 illustration

Worked examples

Example 1 — a first encounter with HA-966

Start with the simplest possible case. Write down what HA-966 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 HA-966 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 HA-966 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 HA-966

In research
HA-966 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 HA-966 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
HA-966 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Amines, NMDA receptor antagonists, Pyrrolidones, so understanding it makes those chapters shorter.
In everyday life
Look for HA-966 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 HA-966 in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what HA-966 means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain HA-966 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is HA-966 in simple terms?

HA-966 or (±)-3-amino-1-hydroxy-pyrrolidin-2-one is a molecule used in scientific research as a glycine receptor and NMDA receptor antagonist / low efficacy partial agonist. It has neuroprotective and anticonvulsant, anxiolytic, antinociceptive and sedative / hypnotic effects in animal models.

Why does HA-966 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 HA-966?

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 HA-966.

Tags

  • Amines
  • NMDA receptor antagonists
  • Pyrrolidones

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