oxyacanthine
/ˌɒksɪəˈkanθiːn/Chemistry
noun
A bitter alkaloid, C37H40N2O6, originally isolated from the bark of the root of the barberry Berberis vulgaris.
Origin
Mid 19th century; earliest use found in Robert Thomson (1810–1864), medical officer of health. From German Oxyacanthin from post-classical Latin oxyacantha, name for Berberis vulgaris + -in.