different between morphinan vs dextrorphanol

English

morphinan (countable and uncountable, plural morphinans)

(chemistry) The base chemical structure of a large class of psychoactive drugs, consisting of opioid analgesics, antitussives, and dissociative hallucinogens, among others.

dextrorphanol (uncountable)

A psychoactive drug of the morphinan class which acts as an antitussive and dissociative hallucinogen.

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