guanidines
guanidines
Any organonitrogen compound containing a carbamimidamido (guanidino) group. Guanidines have the general structure (R<small><sup>1</small></sup>R<small><sup>2</small></sup>N)(R<small><sup>3</small></sup>R<small><sup>4</small></sup>N)C=N-R<small><sup>5</small></sup> and are related structurally to amidines and ureas.