quinoidine

[ kwi-noi-deen, -din ]

Phonetic (Standard)IPA

noun

, Pharmacology.

a brownish-black, resinous substance consisting of a mixture of alkaloids, obtained as a by-product in the manufacture of quinine and formerly used as a cheap substitute for it.

First recorded in 1835–45; quin(ine) + -oid + -ine ²

From such liquors it is precipitated in an impure state by an alkali, and brought into commerce under the name of quinoidine.

The quinoidine of commerce ought never to be used in medicine unless purified.

Dr de Vrij, for instance, found sometimes more than 20% of quinidine in some samples of quinoidine of commerce.

April 25, 2024firkin

[fur-kin ]

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