cinchonamine

noun

cin·​chon·​amine siŋ-ˈkō-nə-ˌmēn  sin-ˈchō- 

-mən

: 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