An organic compound containing a C=NH group bonded to two other groups, often nitrogen-containing, commonly found in pharmaceutical compounds.
From 'amid-' (amide-related) + '-ine' (suffix for nitrogen compounds), standardized in 20th-century chemical nomenclature.
Amidines are chemistry's gift to pharmaceutical companies—this functional group appears in compounds used to treat infections, cancers, and heart disease, making amidines some of the most medicinally important chemical structures.
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