An alkaloid or chemical compound found in cusparia bark.
From 'cusparia' plus the chemical suffix '-ine' (variant of '-idine', used for organic compounds, especially alkaloids). Emerged in the 19th century during the pharmacological analysis of medicinal plants.
Cusparine and cusparidine show how chemists struggle to name compounds—they just added suffixes to the plant name, creating a linguistic shorthand that obscures the plant's indigenous name and history.
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