Sedatives and Hypnotics · Pharmacology

Chloral hydrate is an older hypnotic that is rarely used today. What is its active metabolite?

  1. Trichloroacetic acid
  2. Trichloroethanol
  3. Acetic acid
  4. Acetaldehyde
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Correct answer: Trichloroethanol

Chloral hydrate is a prodrug that is rapidly converted by alcohol dehydrogenase in the liver to trichloroethanol, the compound responsible for the sedative-hypnotic effects. Trichloroacetic acid is also formed, but it is pharmacologically inactive.

Difficulty: Medium Question 16 of 20

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