carbamylguanidine, guanidine carboxylic acid amide, n-amidinourea, Biuretamidine, (Aminoiminomethyl)urea, 1-amidinourea, Carbamoylguanidine, Guanidinecarboxylic amide, Dicyanodiamidine, Urea, (aminoiminomethyl)-, guanylurea, amidine urea, N-carbamoylguanidine, amidinourea, Guanidinecarboxamide, dicyandiamidine, amidino-ure