carboxamidines

Compounds having the structure RC(=NR)NR2. The term is used as a suffix in systematic nomenclature to denote the –C(=NH)NH2 group including its carbon atom, e.g. acetamidine, CH3C(=NH)NH2; 2-butyl-4,5-dihydroimidazole:
C00851-4
Source:
PAC, 1995, 67, 1307 (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1326