cinchonamine

noun
cin·chon·amine | \siŋ-ˈkō-nə-ˌmēn, sin-ˈchō-, -mən\

Medical Definition of cinchonamine 

: a white crystalline alkaloid C19H24N2O obtained from some South American shrubs (genus Remijia) of the madder family that has been used as a substitute for and is more toxic than quinine

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